CN110290262B

CN110290262B - Call method and terminal equipment

Info

Publication number: CN110290262B
Application number: CN201910517896.3A
Authority: CN
Inventors: 林洲; 丁俊; 寇大贺
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-12-01
Anticipated expiration: 2039-06-14
Also published as: CN110290262A

Abstract

The application discloses a conversation method and terminal equipment, relates to the technical field of conversation, and can avoid disclosure of privacy information in a conversation process and improve user experience. The specific scheme is as follows: when detecting a first operation for connecting a first user call, the terminal device responds to the first operation, receives and outputs a first signal, determines that the terminal device is currently in a first conversation environment, and generates and outputs an interference signal. The first signal is obtained by the terminal device through a sound wave signal input by a first user, the interference signal is used for reducing the intelligibility of a second signal leaked when the terminal device outputs the first signal, and the first conversation environment is an environment where conversation content is easy to leak. The embodiment of the application is used for communication.

Description

Call method and terminal equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and a terminal device.

Background

The terminal device can realize various functions, such as photographing, voice call, video chat and the like, but the communication function in the terminal device is always the most basic communication function as a more common communication tool.

Usually, two parties of a call, that is, a calling party and a called party, cannot select a call scene at will, for example, the call is a relatively urgent call, and then the calling party may call the called party according to the current scene, or the called party may answer the call according to the current scene. And because the sound signal enters the human ear and leads to the sound signal to be the diffusion state through the reflection of human ear, can propagate in the air, so the content of this conversation is heard by other users near any party that converses very easily, and then causes the disclosure of privacy information, reduces user's experience.

Disclosure of Invention

The application provides a conversation method and terminal equipment, so that the leakage of privacy information is avoided as much as possible, and the user experience is improved.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, a call method is provided, which may be performed by a terminal device (e.g., a mobile phone, an ipad, or other device with a call function). The method comprises the following steps: when detecting a first operation for connecting a first user call, the terminal device responds to the first operation, receives and outputs a first signal, determines that the terminal device is currently in a first conversation environment, and generates and outputs an interference signal. The first signal is obtained by the terminal device through a sound wave signal input by a first user, the interference signal is used for reducing the intelligibility of a second signal leaked when the terminal device outputs the first signal, and the first conversation environment is an environment where conversation content is easy to leak.

In this scheme, when the terminal device determines that it is currently in an environment where the content of the call is easily leaked, an interference signal may be generated upon receiving a sound wave signal input from the first user. And because the interference signal is used for reducing the intelligibility of the second signal leaked when the terminal device outputs the first signal, other users around the terminal device cannot correctly interpret the second signal from the received signal, namely, the synthesized signal of the second signal and the interference signal, thereby achieving the purpose of avoiding the leakage of the privacy information.

In a second aspect, a call method is provided, which may be executed by a terminal device (e.g., a mobile phone, an ipad, or other device with a call function). The method comprises the following steps: when the terminal device detects a first operation for connecting the incoming call of the first user, the sound collector is started in response to the first operation, and when the terminal device is determined to be in the first conversation environment currently and a third signal from a second user using the terminal device is collected, an interference signal is generated and output. Wherein the interfering signal is used to reduce intelligibility of the third signal.

In this scheme, the third signal may be a sound wave signal transmitted to the opposite user by the second user using the terminal device, and when the terminal device determines that the terminal device is currently in an environment where call content is easily leaked, an interference signal may be generated upon receiving the third signal. Since the interference signal is used to reduce the intelligibility of the third signal, other users around the second user cannot correctly interpret the third signal from the received signal, i.e., the synthesized signal of the third signal and the interference signal, thereby achieving the purpose of avoiding the leakage of the privacy information.

In one possible design, the terminal device may determine that it is currently in the first call environment based on:

the terminal device can collect environmental sound around the terminal device, detect whether other users except the second user exist around the terminal device, and if the intensity of the environmental sound collected by the terminal device is lower than a first preset threshold value and other users exist around the terminal device, it can be determined that the terminal device is currently in an environment where call content is easily revealed, namely a first call environment.

That is to say, before the terminal device generates the interference signal, it may be determined whether it is necessary to generate the interference signal, and the terminal device may generate the interference signal only when it is determined that the terminal device is currently in the first call environment, so as to reduce the load of the terminal device as much as possible and reduce the energy consumption of the terminal device.

In one possible design, the terminal device may generate the interfering signal based on:

the terminal equipment acquires at least one environmental parameter of the current call environment of the terminal equipment through at least one sensor, determines at least one signal parameter value corresponding to the at least one environmental parameter according to the mapping relation between the preset environmental parameter and the signal parameter value, and generates an interference signal according to the at least one signal parameter value.

In the scheme, the terminal equipment generates the interference signal, the corresponding interference signal can be generated based on at least one environment parameter of the collected call environment in the call process, and the interference signals generated by different environment parameters are different, so that the accurate interference signal is obtained as much as possible, and the effect of avoiding the leakage of the privacy information is improved.

In a possible design, the terminal device may further receive a first signal from the first user, simulate a call environment in which the terminal device is located, adjust at least one signal parameter value of the first signal until intelligibility of a coupled signal of the interference signal and the second signal, which is generated according to the adjusted at least one signal parameter value, is lower than a second preset threshold, and at this time, create a corresponding relationship between at least one environment parameter and the at least one signal parameter value, and obtain the mapping relationship. Wherein the call environment comprises at least one environment parameter.

That is to say, in the embodiment of the present application, after receiving the first signal of the first user according to the call environment in which the analog terminal device is located, the interference signal may be generated by changing the signal parameter value of the first signal, so as to obtain the corresponding relationship between the environment parameter and the signal parameter value of the interference signal. Since the second signal is leaked from the terminal device, the characteristics of the second signal are substantially consistent with those of the first signal, and in the embodiment of the present application, the interference signal for reducing the intelligibility of the second signal is obtained by changing the signal parameter value of the first signal, so that the interference signal is more accurate. Meanwhile, the mapping relation is obtained in advance, so that the calculation amount during generation of the interference signal can be reduced, the time delay is reduced, the terminal equipment can generate the interference signal more quickly, and the effect of avoiding the privacy information disclosure is improved as much as possible.

In a possible design, the terminal device may further acquire a third signal from the second user, simulate a call environment in which the terminal device is located, adjust at least one signal parameter value of the third signal until intelligibility of a coupled signal of the interference signal and the third signal generated according to the adjusted at least one signal parameter value is lower than a third preset threshold, and at this time, create a corresponding relationship between the at least one environment parameter and the at least one signal parameter value to obtain the mapping relationship. Wherein the call environment comprises at least one environment parameter;

as such, the mapping relationship may be determined according to the third signal from the second user, so that generating the interference signal for reducing the intelligibility of the third signal is more accurate, and meanwhile, the amount of calculation in generating the interference signal may be reduced, which is beneficial to enabling the terminal device to generate the interference signal more quickly, thereby improving the effect of avoiding the privacy information disclosure as much as possible.

In one possible design, if the terminal device collects at least two environmental parameters, the terminal device may generate the interference signal based on:

the terminal device may determine a priority of each of the at least two environmental parameters, and then determine at least one signal parameter value corresponding to the at least one environmental parameter according to a mapping relationship corresponding to an environmental parameter with a highest priority, so as to generate an interference signal according to the at least one signal parameter value.

In this scheme, the terminal device may further generate the interference signal based on a part of or all of the plurality of environment parameters to minimize the amount of calculation for generating the interference signal. In addition, different environmental parameters have different influence degrees on privacy information leakage, appropriate environmental parameters are selected based on the priorities of the environmental parameters, and then an interference signal is generated according to the selected environmental parameters, so that the obtained interference signal can accurately reduce the intelligibility of the second signal or the third signal, and the effect of avoiding privacy information leakage is improved as much as possible.

In one possible design, if the environment parameters collected by the terminal device include a first environment parameter, that is, a sector area indicating that other users are located within 360 ° of the terminal device, and a central angle of the sector area is an acute angle, the terminal device may determine at least one signal parameter value corresponding to the first environment parameter, and then periodically generate the interference signal according to the at least one signal parameter value.

In the scheme, the sector area has fewer corresponding signal parameter values compared with the 360-degree circular area, so that the signal parameter values determined based on the sector area are fewer, the calculation amount of generating interference signals can be reduced, and the burden of the terminal equipment can be reduced. In addition, the interference signal is periodically generated according to the sector area, that is, in a single time period, the privacy information leakage is avoided only for a small area, and the high-frequency voice signal can be better prevented from being leaked.

In one possible design, the terminal device may acquire a fourth signal after outputting the first signal and the first interference signal, and output first prompt information if it is determined that the strength of the fourth signal is greater than a fourth preset threshold, where the first prompt information is used to prompt adjustment of a signal parameter value in the mapping relationship. The fourth signal is a mixed signal of the first interference signal and the second signal.

In this scheme, the terminal device may acquire the fourth signal to determine an effect of the current first interference signal interfering with the second signal. If the strength of the fourth signal is high, it can be considered that the effect of reducing the intelligibility of the second signal by the current interference signal is poor, and at this time, prompt information is output to remind the optimization of the signal parameter value used for generating the interference signal, so as to adaptively adjust the signal parameter value.

In one possible design, the terminal device may acquire a fifth signal after outputting the second interference signal, and output second prompt information if it is determined that the strength of the fifth signal is greater than a fifth preset threshold, where the second prompt information is used to prompt adjustment of a signal parameter value in the mapping relationship. And the fifth signal is a mixed signal of the second interference signal and the third signal.

Similar to the above scheme, the terminal device may determine that the current second interference information has a poor effect of reducing the intelligibility of the third signal, and may output a prompt to prompt the user to optimize a signal parameter value used for generating the second interference signal if it is determined that the second interference information has a poor effect of reducing the intelligibility of the third signal.

In a possible design, the terminal device may further display a prompt interface in response to the second operation when detecting the input second operation, and adjust the signal parameter value in the mapping relationship to the value indicated by the third operation in response to the third operation when detecting the third operation input for the adjustment option. The second operation is used for requesting to adjust the signal parameter values in the mapping relationship, the prompt interface comprises an adjustment option, the adjustment option is used for indicating the value range of the signal parameter values in the mapping relationship, and the third operation is used for indicating the values respectively selected in the value range of each signal parameter value.

In this scheme, the terminal device may implement a signal parameter value for generating the interference signal based on an operation input by a user to adaptively adjust the signal parameter value for generating the interference signal, thereby improving the accuracy of the generated interference signal.

In a second aspect, an embodiment of the present application provides a terminal device, where the terminal device includes at least one sensor, a processor, and a memory, where the memory stores program instructions, and when the program instructions are executed, the terminal device is caused to perform the call method in any one of the possible implementations of the first aspect and the first aspect.

On the other hand, the embodiment of the present application provides a terminal device, where the terminal device has a function of implementing a behavior of the terminal device in the above aspect and possible implementation manners of the above aspect. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules or units corresponding to the above-described functions. For example, a determination module or unit, a judgment module or unit, a generation module or unit, and the like.

In another aspect, an embodiment of the present application provides a terminal device including one or more processors and one or more memories. The one or more memories are coupled to the one or more processors and the one or more memories are configured to store computer program code comprising computer instructions that, when executed by the one or more processors, cause the electronic device to perform the method of telephony in any of the possible implementations of any of the aspects described above.

In another aspect, an embodiment of the present application provides a computer storage medium, which includes computer instructions, and when the computer instructions are executed on a terminal device, the terminal device is caused to execute the image display method in any one of the possible implementations of any one of the foregoing aspects.

In another aspect, an embodiment of the present application provides a computer program product, which, when run on an electronic device, causes the electronic device to perform a call method in any one of the possible designs of the foregoing aspects.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system applicable to the embodiment of the present application;

fig. 2 is a schematic diagram of an application scenario provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of a user interface for making a call provided by an embodiment of the present application;

fig. 4 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present application;

fig. 5 is a schematic layout diagram of a camera of a terminal device according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a transmission of an original acoustic signal provided by an embodiment of the present application;

fig. 7 is a schematic diagram of relative positions of a user B and a surrounding user C according to an embodiment of the present application;

FIG. 8 is a schematic diagram illustrating a transmission of an original acoustic signal according to an embodiment of the present application;

FIG. 9 is a schematic diagram illustrating a transmission of an original acoustic signal according to an embodiment of the present application;

FIG. 10 is a schematic diagram illustrating a transmission of an original acoustic signal according to an embodiment of the present application;

fig. 11 is a flowchart illustrating a call method according to an embodiment of the present application;

fig. 12 is a flowchart illustrating a call method according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments of the specification.

In order to avoid the problem that the terminal equipment in the prior art easily causes the leakage of the voice privacy information in the conversation process, the embodiment of the application provides the conversation method, the method is suitable for being used in the terminal equipment, and the terminal equipment can generate a signal for interfering the voice content sent by a calling party in the conversation process, so that the intelligibility of the leaked voice signal is reduced, the leakage of the voice privacy information in the conversation process is avoided, and the user experience is improved.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

The terminal equipment that this application embodiment relates to can be called User Equipment (UE) again, can be the equipment of specific conversation functions such as smart mobile phone, panel computer, all kinds of wearable equipment. The call function may be a call function provided by a telephone calling system, or may be a call function provided by instant messaging software, for example, applications such as WeChat and QQ may be installed in the terminal device, and these applications can provide a voice call function.

The embodiments of the present application relate to a plurality of numbers greater than or equal to two. In addition, it is to be understood that the terms first, second, etc. in the description of the present application are used for distinguishing between the descriptions and not necessarily for describing a sequential or chronological order.

Please refer to fig. 1, which is a schematic diagram of a communication system according to an embodiment of the present application. Specifically, the communication system architecture shown in fig. 1 includes a terminal device 100-1, a terminal device 100-2, and a mobile communication network. The terminal device 100-1 and the terminal device 100-2 can communicate through a mobile communication network. The mobile communication network may be a second generation mobile communication (2nd-generation, 2G) network, a third generation mobile communication (3rd-generation, 3G) network, a fourth generation mobile communication (4th-generation, 4G) network, a fifth generation mobile communication (5th-generation, 5G) network, or the like.

User a uses terminal device 100-1 and user B uses terminal device 100-2. referring to fig. 2, user a may initiate a call to user B by directly entering user B's telephone number on user interface 200 of terminal device 100-1. For example, as shown in fig. 2, the user interface 200 of the terminal device 100-1 includes a dial pad, an input telephone number "12345659876", and dial buttons 201. When the input telephone number is the telephone number of the user B, the terminal device 100-1 initiates a call to the user B in response to the operation of the dial button 201, and displays a user interface 202 as shown in fig. 2 on the display screen. It should be noted that, in this embodiment of the application, the user a may also use the terminal device 100-1 to initiate a call to the user B in other manners, for example, initiate a call to the user B in a voice interaction manner provided by the above-mentioned instant messaging software.

User B receives the voice information from user a through the handset of terminal device 100-2. In practical use, the ear of the user B may be close to or far from the terminal device 100-2 due to different habits of the users, for example, as shown in fig. 3, when the user B answers the call, the ear may be attached to the terminal device 100-2, or may be far from the terminal device 100-2. Whether the ear of user B is closer to or farther from terminal device 100-2, the ear is not in full contact with terminal device 100-2. Since the voice information is essentially a sound signal, the sound signal can be transmitted through the air, and the sound signal is reflected by the ear, so that the sound signal can be heard by the user beside the user B, which may cause the leakage of the voice privacy information.

In view of this, an embodiment of the present application provides a call method, which is applicable to a terminal device, where the terminal device can generate a signal for interfering with a voice content sent by a calling party in a call process of a user, so as to reduce intelligibility of a leaked voice signal, avoid leakage of voice privacy information in the call process, and improve user experience.

For example, fig. 4 shows a structure diagram of a terminal device to which the embodiment of the present application may be applied. Referring to fig. 4, the terminal device 400 may include a processor 410, an internal memory 421, an external memory interface 422, an antenna 1, a mobile communication module 431, an antenna 2, a wireless communication module 432, an audio module 440, a speaker 440A, a receiver 440B, a microphone 440C, an earphone interface 440D, a display 451, a Subscriber Identity Module (SIM) card interface 452, a camera 453, a button 454, a sensor module 460, a Universal Serial Bus (USB) interface 470, a charge management module 480, a power management module 481, and a battery 482. Among other things, sensor module 460 may include touch sensor 460A, fingerprint sensor 460B, gyroscope sensor 460C, pressure sensor 460D, acceleration sensor 460E, distance sensor 460F, proximity light sensor 460G, temperature sensor 460H, bone conduction sensor 460I, and the like. In other embodiments, the terminal device 400 may also include an indicator 455, a motor 456, and the like.

It is to be understood that the illustrated structure of the embodiment of the present application does not constitute a specific limitation to the terminal device 400. In other embodiments of the present application, terminal device 400 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 410 may include one or more processing units, among others. For example: the processor 410 may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), etc. The different processing units may be separate devices or may be integrated into one or more processors. The controller may be, among other things, the neural center and the command center of the terminal device 400. The processor 410 may generate operation control signals according to the instruction operation code and the timing signals to perform instruction fetching and execution control. In this embodiment, the processor 410 may execute the program instructions to complete a process of generating a signal for interfering with the voice content sent by the calling party during the call of the user.

In some embodiments, a memory may also be provided in processor 410 for storing instructions and data. By way of example, the memory in the processor 410 may be a cache memory. The memory may be used to hold instructions or data that have just been used or recycled by the processor 410. If the processor 410 needs to reuse the instruction or data, it can be called directly from the memory. Thereby helping to avoid repeated accesses and reducing the latency of the processor 410, thereby increasing the efficiency of the system.

The internal memory 421 may be used to store computer executable program code. The executable program code includes instructions. The processor 410 executes various functional applications of the terminal device and data processing by executing instructions stored in the internal memory 421. The internal memory 421 may include a program storage area and a data storage area. The storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. The storage data area may store data (such as audio data, a phonebook, etc.) created during use of the terminal device, and the like. In addition, the internal memory 421 may include a high-speed random access memory, and may further include a nonvolatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (UFS), and the like. In the embodiment of the present application, the internal memory 421 may store instructions or codes for generating a signal for interfering with the voice content sent by the calling party during the call of the user.

The external memory interface 422 may be used to connect an external memory card (e.g., a Micro SD card) to extend the storage capability of the terminal device. The external memory card communicates with the processor 410 through the external memory interface 422 to implement data storage functions. For example, files such as music, video, etc. are saved in an external memory card.

The wireless communication function of the terminal device 400 may be implemented by the antenna 1, the antenna 2, the mobile communication module 431, the wireless communication module 432, a modem processor, a baseband processor, and the like.

The

antennas

1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in terminal device 400 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 431 may provide a solution including wireless communication of 2G/3G/4G/5G, etc. applied to the terminal device 400. The mobile communication module 431 may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module 431 may receive the electromagnetic wave signal from the antenna 1, filter, amplify, etc. the received electromagnetic wave signal, and transmit the electromagnetic wave signal to the modem processor for demodulation. The mobile communication module 431 can also amplify the signal modulated by the modem processor, and convert the signal into an electromagnetic wave signal through the antenna 1 to radiate the electromagnetic wave signal. In some embodiments, at least part of the functional modules of the mobile communication module 431 may be provided in the processor 410. In some embodiments, at least some of the functional modules of the mobile communication module 431 may be provided in the same device as at least some of the modules of the processor 410. For example, the mobile communication module 431 may transmit voice to other terminal devices and may also receive voice transmitted by other terminal devices.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then passes the demodulated low frequency baseband signal to a baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs sound wave signals through an audio device (not limited to the speaker 440A, the receiver 440B, etc.) or displays images or video through the display screen 451. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 431 or other functional modules, independent of the processor 410.

The wireless communication module 432 may provide a solution for wireless communication applied to a terminal device, including Wireless Local Area Networks (WLANs) (such as Wi-Fi networks), Bluetooth (BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), Infrared (IR), and the like. The wireless communication module 432 may be one or more devices integrating at least one communication processing module. The wireless communication module 432 receives an electromagnetic wave signal via the antenna 2, performs frequency modulation and filtering processing on the electromagnetic wave signal, and transmits the processed signal to the processor 410. The wireless communication module 432 may also receive a signal to be transmitted from the processor 410, perform frequency modulation and amplification on the signal, and convert the signal into an electromagnetic wave signal through the antenna 2 to radiate the signal.

In some embodiments, the terminal device antenna 1 is coupled to the mobile communication module 431 and the terminal device antenna 2 is coupled to the wireless communication module 432, so that the terminal device 400 can communicate with the network and other devices through wireless communication technology. The wireless communication technology may include global system for mobile communications (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), time-division code division multiple access (TD-SCDMA), Long Term Evolution (LTE), LTE, BT, GNSS, WLAN, NFC, FM, and/or IR technologies, etc. The GNSS may include a Global Positioning System (GPS), a global navigation satellite system (GLONASS), a beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), and/or a Satellite Based Augmentation System (SBAS).

The terminal device 400 may implement an audio function through the audio module 440, the speaker 440A, the receiver 440B, the microphone 440C, the earphone interface 440D, and the application processor, etc. Such as music playing, recording, etc.

The audio module 440 may be used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal. The audio module 440 may also be used to encode and decode audio signals. In some embodiments, the audio module 440 may be disposed in the processor 410, or some functional modules of the audio module 440 may be disposed in the processor 410.

The speaker 440A, also referred to as a "horn", is used to convert electrical audio signals into sound signals. The terminal device 400 can listen to music or listen to a hands-free call through the speaker 440A.

The receiver 440B, also called "earpiece", is used to convert the electrical audio signal into an acoustic signal. When the terminal device answers a call or voice information, it is possible to answer a voice by placing the receiver 440B close to the human ear.

The microphone 440C, also known as a "microphone," is used to convert sound signals into electrical signals. When making a call or sending voice information, the user may speak via the mouth of the user near the microphone 440C, which may be used to capture the user's voice and then convert the user's voice into an electrical signal. The terminal device may be provided with at least one microphone 440C. In other embodiments, the terminal device may be provided with two microphones 440C, so as to achieve a noise reduction function in addition to collecting sound signals. In other embodiments, the terminal device may further include three, four, or more microphones 440C to achieve sound signal collection, noise reduction, sound source identification, directional recording function, and the like.

The earphone interface 440D is used to connect a wired earphone. The earphone interface 440D may be the USB interface 470, or may be an Open Mobile Terminal Platform (OMTP) standard interface of 3.5mm, a cellular telecommunications industry association (cellular telecommunications industry association of the USA, CTIA) standard interface, or the like.

The terminal device 400 can implement a display function by the GPU, the display screen 451, and the application processor, etc. The GPU is a microprocessor for image processing, connected to the display screen 451 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 410 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 451 may be used to display images, video, and the like. The display screen 451 may include a display panel. The display panel may be a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED), a flexible light-emitting diode (FLED), a miniature, a Micro-oeld, a quantum dot light-emitting diode (QLED), or the like. In some embodiments, the terminal device 400 may include 4 or N display screens 451, N being a positive integer greater than 1.

The terminal apparatus 400 can realize a shooting function by the camera 453, the ISP, the DSP, the video codec, the display screen 451, the application processor, and the like.

The camera 453 may be used to capture still images or video. Illustratively, the camera 453 may include a lens and an image sensor. The object generates an optical image through the lens and projects the optical image to the photosensitive element. The photosensitive element may be a Charge Coupled Device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The light sensing element converts the optical signal into an electrical signal, which is then passed to the ISP where it is converted into a digital image signal. And the ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into image signal in standard RGB, YUV and other formats. In some embodiments, electronic device 400 may include 1 or N cameras 453, N being a positive integer greater than 1.

It should be noted that, in the embodiment of the present application, the terminal device may include one or N cameras 453, where N is a positive integer greater than or equal to 2. Illustratively, as shown in fig. 5, the terminal device includes 5 cameras, wherein

cameras

453A, 453B are located on the front side of the terminal device, which may be referred to as front cameras, and cameras 453C, 453D, 453E are located on the back side of the terminal device, which may be referred to as rear cameras. Taking fig. 5 as an example, the lenses of the

cameras

453A, 453B, 453C, 453D, and 453E may be all standard lenses, or may be partly standard lenses and partly anamorphic lenses. For example, the lenses of the

cameras

453A, 453C, and 453E are standard lenses, and the lenses of the cameras 453B and 453D are anamorphic lenses. When the terminal equipment shoots the wide-frame image, the anamorphic lens is used for collecting the image, so that the subsequent image processing process is facilitated to be simplified, more contents are presented in the image shot by the terminal equipment, and the environment where the terminal equipment is located can be determined more accurately.

It should be noted that the anamorphic lens may also be referred to as an anamorphic wide-screen lens. The image sensor may be a Charge Coupled Device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The image sensor converts the optical signal into an electrical signal and then delivers the electrical signal to the ISP.

The ISP may be provided in the camera 453 for processing data fed back by the camera 453. In some embodiments, the ISP may also optimize parameters such as exposure, color temperature, etc. of the shooting scene. After the digital image signal is processed by the later image processing, the processed digital image signal is output to a video coder-decoder for compression coding.

The image processor may be a DSP or other device for performing image processing. In addition, the ISP can also directly perform post-image processing after obtaining the digital image signal, such as performing algorithm optimization on noise, brightness, and color of the image.

Video codecs are used to compress or decompress digital video. The terminal device 400 may support one or more video codecs. In this way, the terminal device 400 can play or record video in a plurality of encoding formats, such as: moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, and the like.

The NPU is a neural-network (NN) computing processor that processes input information quickly by using a biological neural network structure, for example, by using a transfer mode between neurons of a human brain, and can also learn by itself continuously. The NPU can implement applications such as intelligent recognition of the terminal device 400, for example: speech recognition, text understanding, etc.

Keys 454 may include a power on key, a volume key, etc. The keys 454 may be mechanical keys. Or may be touch keys. The terminal device may receive a key input, and generate a key signal input related to user setting and function control of the terminal device.

The indicator 455 may be an indicator light, and may be used to indicate a charging status, a charge change, or a message, a missed call, a notification, etc.

The motor 456 may generate a vibration cue. The motor 456 may be used for both an electrical vibration prompt and a touch vibration feedback. For example, touch operations applied to different applications (e.g., photographing, audio playing, etc.) may correspond to different vibration feedback effects. The motor 456 may also respond to different vibration feedback effects for touch operations on different areas of the display screen 451. Different application scenes (such as time reminding, receiving information, alarm clock, game and the like) can also correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

The sensor module 460 may include one or more sensors. For example, touch sensor 460A, fingerprint sensor 460B, gyroscope sensor 460C, pressure sensor 460D, acceleration sensor 460E, distance sensor 460F, proximity light sensor 460G, and the like. In some embodiments, the sensor module 460 may also include environmental sensors or the like.

The touch sensor 460A may also be referred to as a "touch panel". The touch sensor 460A may be disposed on the display 454, and the touch sensor 460A and the display 451 constitute a touch screen, also referred to as a "touch screen". The touch sensor 460A is used to detect a touch operation applied thereto or nearby. Touch sensor 460A may pass the detected touch operation to an application processor to determine the touch event type. Visual output related to the touch operation may be provided through the display screen 451. In other embodiments, the touch sensor 460A may be disposed on a surface of the terminal device at a different location than the display screen 451.

Fingerprint sensor 460B may be used to capture a fingerprint. The terminal equipment can utilize the collected fingerprint characteristics to realize fingerprint unlocking, application lock access, fingerprint photographing, fingerprint incoming call answering and the like.

The gyro sensor 460C may be used to determine the motion attitude of the terminal device. In some embodiments, the angular velocity of the terminal device about three axes (i.e., x, y, and z axes) may be determined by gyroscope sensor 460C. The gyro sensor 460C may be used for photographing anti-shake. Illustratively, when the shutter is pressed, the gyroscope sensor 460C detects the shake angle of the terminal device, calculates the distance to be compensated for by the lens module according to the shake angle, and enables the lens to counteract the shake of the terminal device through reverse movement, thereby achieving anti-shake. The gyroscope sensor 460C may also be used for navigation, body sensing game scenes.

The pressure sensor 460D is used for sensing a pressure signal, and can convert the pressure signal into an electrical signal. In some embodiments, pressure sensor 460D may be disposed on display screen 451. The pressure sensor 460D may be of a wide variety, such as a resistive pressure sensor, an inductive pressure sensor, a capacitive pressure sensor, or the like. The capacitive pressure sensor may be a sensor comprising at least two parallel plates having an electrically conductive material. When a force acts on the pressure sensor 480A, the capacitance between the electrodes changes. The terminal device determines the intensity of the pressure from the change in capacitance. When a touch operation is applied to the display screen 494, the terminal device detects the intensity of the touch operation based on the pressure sensor 480A. The terminal device may also calculate the touched position from the detection signal of the pressure sensor 480A. In some embodiments, the touch operations that are applied to the same touch position but different touch operation intensities may correspond to different operation instructions. For example: and when the touch operation with the touch operation intensity smaller than the first pressure threshold value acts on the short message application icon, executing an instruction for viewing the short message. And when the touch operation with the touch operation intensity larger than or equal to the first pressure threshold value acts on the short message application icon, executing an instruction of newly building the short message.

The acceleration sensor 460E can detect the magnitude of the terminal device acceleration in various directions (typically three axes). When the terminal equipment is static, the size and the direction of gravity can be detected. The method can also be used for recognizing the posture of the terminal equipment and applied to horizontal and vertical screen switching, pedometers and other applications.

The distance sensor 460F is used to measure distance. The terminal device 400 may measure the distance by infrared or laser. In some embodiments, taking a picture of a scene, terminal device 400 may utilize range sensor 460F to range for fast focus.

The proximity light sensor 460G may include, for example, a Light Emitting Diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The terminal device 400 emits infrared light to the outside through the light emitting diode. The terminal device 400 detects infrared reflected light from a nearby object using a photodiode. When sufficient reflected light is detected, it can be determined that there is an object near the terminal device 400. When insufficient reflected light is detected, the terminal device 400 can determine that there is no object near the terminal device 400. The terminal device 400 can utilize the proximity light sensor 460G to detect that the user holds the terminal device 400 close to the ear for talking, so as to automatically turn off the screen for power saving. The proximity light sensor 460G may also be used in holster mode, pocket mode automatically unlock and lock screen.

In some embodiments, the sensors may also include temperature sensors, bone conduction sensors, and the like.

In other embodiments, processor 410 may also include one or more interfaces. For example, the interface may be a SIM card interface 452. Also for example, the interface may be a USB interface 470. For example, the interface may also be an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, or the like. It is understood that the processor 410 according to the embodiment of the present application may interface different modules of the terminal device, so as to enable the terminal device to implement different functions. Such as taking a picture, processing, etc. It should be noted that, in the embodiments of the present application, a connection mode of an interface in a terminal device is not limited.

The SIM card interface 452 may be used to connect a SIM card, among others. The SIM card can be attached to and detached from the terminal device by being inserted into the SIM card interface 452 or being pulled out of the SIM card interface 452. The terminal equipment can support 1 or N SIM card interfaces, and N is a positive integer greater than 1. The SIM card interface 452 may support a Nano SIM card, a Micro SIM card, a SIM card, or the like. Multiple cards can be inserted into the same SIM card interface 452 at the same time. The types of the plurality of cards may be the same or different. The SIM card interface 452 may also be compatible with different types of SIM cards. The SIM card interface 452 may also be compatible with an external memory card. The terminal equipment interacts with the network through the SIM card to realize functions of conversation, data communication and the like. In some embodiments, the end-point device employs esims, namely: an embedded SIM card. The eSIM card can be embedded in the terminal device and cannot be separated from the terminal device.

The USB interface 470 is an interface conforming to the USB standard specification. For example, the USB interface 470 may include a Mini USB interface, a Micro USB interface, a USB Type C interface, and the like. The USB interface 470 may be used to connect a charger to charge the terminal device, and may also be used to transmit data between the terminal device and the peripheral device. And the earphone can also be used for connecting an earphone and playing audio through the earphone.

The charge management module 480 is configured to receive a charging input from a charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 480 may receive charging input from a wired charger via the USB interface 470. In some wireless charging embodiments, the charging management module 480 may receive a wireless charging input through a wireless charging coil of the terminal device. While the charging management module 440 charges the battery 482, the power management module 481 may also supply power to the terminal device.

The power management module 481 is used to connect the battery 482, the charge management module 480 and the processor 410. The power management module 481 receives input from the battery 482 and/or the charge management module 480 and supplies power to the processor 410, the internal memory 421, the external memory, the display screen 451, the camera 453, the mobile communication module 431, the wireless communication module 432, and the like. The power management module 484 may also be used to monitor parameters such as battery capacity, battery cycle count, battery state of health (leakage, impedance), etc. In other embodiments, the power management module 481 may also be disposed in the processor 410. In other embodiments, the power management module 481 and the charging management module 480 may be disposed in the same device.

In some embodiments, processor 410 may include one or more interfaces. The interface may include an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a Universal Serial Bus (USB) interface, etc.

It should be understood that the interface connection relationship between the modules illustrated in the embodiment of the present application is only an exemplary illustration, and does not constitute a limitation on the structure of the terminal device 400. In other embodiments of the present application, the terminal device 400 may also adopt different interface connection manners or a combination of multiple interface connection manners in the above embodiments. It should be understood that the hardware configuration shown in fig. 4 is only one example. The terminal device of the embodiments of the present application may have more or fewer components than shown in the figures, may combine two or more components, or may have a different configuration of components. The various components shown in the figures may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.

The following describes a communication method according to an embodiment of the present application in detail with reference to the accompanying drawings by taking the terminal device with the structure shown in fig. 4 as an example.

Take the example that user a initiates a call to user B through terminal device 100-1. Referring to fig. 2 again, when the terminal device 100-1 detects that the user a clicks a dial button 201 on a User Interface (UI) 200 of the terminal device 100-1, the terminal device 100-1 initiates a call to the user B in response to an operation of the dial button 201, and displays a user interface 202 as shown in fig. 2 on a display screen. The call signal initiated by the terminal device 100-1 is transmitted to, for example, a base station in the mobile communication network, and the base station connects to the terminal device 100-2 used by the user B, at this time, the terminal device 100-1 establishes a communication connection with the terminal device 100-2.

When the user a speaks into the terminal device 100-1, the vibration of the vocal cords excites the air vibration to form a sound wave signal, which is hereinafter referred to as a first signal.

After the microphone 440C or the receiver 440B in the terminal device 100-1 collects the first signal, the first signal is converted into a current signal, the current signal is encoded by the codec module, and then the encoded signal is modulated into a radio frequency signal by the modem module, and the radio frequency signal is transmitted to the mobile communication network through the mobile communication module 431 or the wireless communication module 432, and is transmitted to the terminal device 100-2 through the mobile communication network. The modulation and demodulation module in the terminal device 100-2 demodulates the radio frequency signal into a coded signal, the coding and decoding module performs decoding processing on the coded signal to obtain a current signal, and the sound generating element such as the speaker 440A or the receiver (i.e., the receiver 440B) converts the received current signal into a sound wave signal and outputs the sound wave signal, so that the user B can listen to the speech of the user a through the receiver of the terminal device 100-2 or the speaker 440A. Hereinafter, the signal received by the terminal device 100-2 from the user a is referred to as a second signal.

When the terminal device 100-2 outputs the second signal, the second signal may leak through a gap on the top or side of the terminal device 100-2, thereby causing leakage of privacy information. Hereinafter, a signal leaked when the terminal device 100-2 outputs the second signal is referred to as a third signal.

In order to avoid the disclosure of the privacy information, the terminal device 100-2 may generate an interference signal for interfering with the third signal when receiving the voice signal of the user a, so as to reduce intelligibility of the third signal by users around the user B, and even reduce the possibility that users around the user B hear the speech content of the user a. Intelligibility of the third signal is to be understood as the identification of the third signal, e.g. the strength of the third signal is low, and the probability of hearing the third signal by users in the vicinity of user B is low, so that the content of the third signal is less likely to be correctly interpreted, i.e. the identification of the third signal is also low. For another example, if the third signal is masked in the time domain or the frequency domain, the useful information of the third signal may be missing to some extent, in which case the third signal is also less recognizable.

The terminal device 100-2 may generate a first interference signal for interfering with the third signal based on the second signal and output the first interference signal. Wherein the second signal may be output via a sound-emitting element, e.g. an earpiece, of the terminal device 100-2, and the first interference signal may be output via another sound-emitting element, e.g. another earpiece, of the terminal device 100-2. The third signal and the first interfering signal leaked from the terminal device 100-2 may be combined while propagating in the air to form a fourth signal for transmission to other users around the user. Since the second signal is output through a sound-emitting element, such as a handset, on the terminal device 100-2, the user B receives the second signal directly through the handset without affecting the interpretation of the second signal. The first interfering signal may interfere with the third signal, so the first interfering signal causes the third signal to be less intelligible and thus less intelligible to the third signal for other users in the vicinity of user B. For example, if the first interference signal is a signal with a phase opposite to that of the third signal, the strength of the fourth signal formed by the first interference signal and the third signal becomes smaller than that of the third signal, that is, the amplitude of the fourth signal is lower than that of the third signal, which can reduce the possibility that the user around user B can hear the speech content of user a, thereby reducing the intelligibility of the third signal by other users around user B. For another example, the first interfering signal may cause time-domain masking to the third signal, and other users around user B receive the third signal and cannot obtain all useful information from the third signal, thereby reducing intelligibility of the third signal by other users around user B.

In the embodiment of the present application, the second signal received by the terminal device 100-2 is used as the base signal for generating the first interference signal, so that it is not necessary to separately provide the base signal for generating the first interference signal. And, generally speaking, the third signal is the second signal that leaks out through the terminal device 100-2, and the characteristics of the third signal are basically the same as the second signal, and the first interference signal that interferes with the third signal is generated based on the second signal, and is more targeted, and the generated first interference signal can better interfere with the third signal. For example, the terminal device 100-2 generates a first interference signal based on the second signal in real time when receiving the second signal, and then outputs the first interference signal. Thus, the second signal and the first interfering signal are output at substantially the same time, reducing the intelligibility of the third signal in real time.

In addition, if the third signal is used as the basic signal when the intelligibility of the user to the third signal is reduced, that is, the interference signal is generated according to the third signal itself, the third signal needs to be acquired in real time, and the requirement on the real-time performance of signal processing is high. The received second signal is used as a basic signal, a third signal does not need to be acquired in real time, and the requirement on the real-time performance of signal processing is low.

For example, the first interference signal may include a delayed signal of the second signal, and for convenience of description, the delayed signal of the second signal is hereinafter referred to as a mixed-sound signal; alternatively, the first interfering signal may comprise a time-domain inverse signal of the second signal, hereinafter also referred to as a time-domain masking signal; alternatively, the first interfering signal may comprise a frequency domain disturbing signal of the second signal, hereinafter also referred to as frequency domain masking signal, or the first interfering signal may be a harmonic signal or the like. The above description has only exemplified four first interference signals, and actually, any signal that can reduce the intelligibility of the third signal may be used, for example, the first interference signal may also be a signal formed by superimposing at least two first interference signals among the four first interference signals, and the embodiment of the present application does not limit this.

For easy understanding, please refer to fig. 6, which is a schematic diagram illustrating transmission of a second signal according to an embodiment of the present application. Fig. 6 illustrates an example in which the terminal device 100-2 is provided with two sound generating elements, wherein the sound generating element 1 is used for generating the second signal, and the sound generating element 2 is used for generating the first interference signal. In fig. 6, the signal S is the second signal, the signal X is the third signal, the signal Y is the first interference signal, and the signal D is the second signal, i.e. the composite signal of the third signal X and the first interference signal Y. As can be seen from fig. 6, the third signal, signal X, propagates in the air after being reflected by the ear of user B after being output from terminal device 100-2. The first interfering signal Y is a signal for reducing the intelligibility of the third signal X, as shown in fig. 6, taking the example that the first interfering signal Y is a signal with opposite phase to the third signal X. As can be seen from fig. 6, the amplitude of the fourth signal D is lower than that of the third signal X, i.e. the first interference signal decreases the amplitude of the third signal X, i.e. the first interference signal Y decreases the strength of the third signal X, thereby reducing the possibility that other users around the user B can hear the third signal X clearly. Therefore, when the users around the user B receive the fourth signal D, the third signal X is difficult to be read from the fourth signal D, so that the possibility that the users around the user B listen to the correct reading of the third signal X is reduced, and the purpose of avoiding the leakage of the sound privacy information of the users is achieved.

In fact, the degree of influence of the disclosure of the privacy information of the terminal device 100-2 by different call environments is all different. For example, if the terminal device 100-2 is in an elevator, since the elevator space is relatively narrow and there is echo, there is a high possibility that the privacy information is leaked. In contrast, the terminal device 100-2 is on the square, and since the square space is relatively open, the possibility of leakage of the private information is small. For example, even in the same place of conversation, the distances between other users around the user B and the user B are different, and the degree of influence on the leakage of the private information is different. For example, if the distance between the other user and the user B is short, the possibility of leakage of the private information is high, whereas if the distance between the other user and the user B is long, the possibility of leakage of the private information is low. For another example, the other users have different relative positions with respect to the user B, and the degree of influence on the disclosure of the private information is all different. For example, when the user B listens to the sound wave signal output by the terminal device 100-2 through the right ear, the possibility that the private information is leaked is high when the other user is located on the right side of the user B, and conversely, the possibility that the private information is leaked is low when the other user is located on the left side of the user B.

In consideration of different influence degrees of different call environments on the disclosure of the privacy information of the terminal device 100-2, the terminal device 100-2 in the embodiment of the present application may generate the corresponding first interference signal according to the current call environment of the terminal device 100-2, so as to reduce the intelligibility of the third signal as much as possible.

Specifically, when the terminal device 100-2 connects the call of the terminal device 100-1, the terminal device 100-2 may detect the call environment in which the terminal device 100-2 is currently located. The call environment here may be a call scene (e.g., an elevator, a square, etc.) where the terminal device 100-2 is located, may also be a distance between another user around the user B and the user B, or may also be a distance between an ear of the user B and the terminal device 100-2, which is not listed here. Of course, the call environment here may be any combination of the three call environments listed above, and the combination of the call environments is not limited in the embodiment of the present application.

Illustratively, the terminal device 100-2 may turn on the camera and receive an image captured by the camera when the call of the terminal device 100-1 is connected. The terminal device 100-2 can determine whether the object around the user B is another user or another object (e.g., a building) from the captured image. Meanwhile, the terminal device 100-2 may also determine, according to the image captured by the camera, whether the location where the terminal device 100-2 is located is a relatively narrow space (e.g., an elevator, a conference room), or a relatively open space (e.g., a square). In order to determine the environment around the terminal device 100-2 more accurately, the camera here may be a camera whose lens is an anamorphic lens like the above-described camera 453B and camera 453D. This helps to make more contents appear in the captured image when the terminal device 100-2 can capture a wide-frame image.

Illustratively, the terminal device 100-2 may also turn on the distance sensor 460F provided thereon and receive a distance signal detected from the distance sensor 460F when a call of the terminal device 100-1 is connected. The terminal device 100-2 can determine the distances between other users around the user B and the user B from the distance signal.

Illustratively, the terminal device 100-2 may also turn on the proximity light sensor 460G provided thereon and receive an electrical signal detected by the proximity light sensor 460G when a call of the terminal device 100-1 is connected. From the electrical signal, terminal device 100-2 can determine the distance between the ear of user B and terminal device 100-2.

For simplicity, the above lists only three specific embodiments in which the terminal device 100-2 detects the call environment in which the terminal device 100-2 is currently located. Actually, the terminal device 100-2 in the embodiment of the present application may detect the current call environment of the terminal device 100-2 by any two or three combinations of the above three specific implementations, which is not limited in the embodiment of the present application. When the terminal device 100-2 determines the current call environment of the terminal device 100-2, a corresponding first interference signal may be generated according to the determined call environment.

For example, the embodiment of the present application may simulate the second signal in advance, generate the first interference signal based on the simulated second signal, and determine the signal parameter value of the first interference signal. The signal parameter value here can be regarded as a value of a property parameter of the signal. The property parameter may include at least one of phase, amplitude, frequency, time delay in time domain, etc. Different call environments correspond to different first interference signals, one first interference signal corresponds to one group of attribute parameters, namely, different call environments correspond to values of each attribute parameter in different groups of attribute parameters.

Specifically, in the embodiment of the present application, the terminal device 100-2 may be placed in different communication environments in advance, and the user a may be simulated to communicate with the user B using the terminal device 100-2 through the terminal device 100-1. When a sound generating element such as a handset of the terminal device 100-2 receives a second signal input by the user a through the terminal device 100-1, the terminal device 100-2 outputs a first interference signal through the sound generating element except the handset, and performs a test until the amplitude or intelligibility of a fourth signal received at the test location (user C around user B) is lower than a first preset threshold, at which time a parameter value of the first interference signal is recorded.

In a possible implementation manner, the embodiment of the present application may modify at least one attribute parameter of the second signal through deep learning, and train the second signal according to the modified at least one attribute parameter to obtain the first interference signal, until the obtained first interference signal is trained so that the amplitude or intelligibility of the signal at the test location is lower than a first preset threshold. At this time, a signal parameter value of the first interference signal is acquired.

It should be noted that the first preset threshold corresponding to the amplitude of the signal at the test location may be the same as or different from the first preset threshold corresponding to the intelligibility of the signal at the test location.

Illustratively, the user B holds the terminal device 100-2 in one corner of the elevator (assumed as the vertex a), and when the terminal device 100-2 is in a call state, the intensity of the sound wave signal of the elevator at the position of the point B and the point C is respectively collected. Wherein, the point B is an adjacent vertex on the same side with the point A, and the connecting line between the point C and the vertex A is a diagonal line of the elevator. Generally speaking, when the intensity of the acoustic wave signal heard by the user is lower than a first preset threshold, the user cannot correctly interpret the acoustic wave signal. Therefore, in the embodiment of the present application, when the user B holds the terminal device 100-2 at the point a of the elevator to listen to the second signal from the terminal device 100-1, at least one attribute parameter of the second signal may be modified and the second signal may be trained. And outputting the first interference signal obtained after each training through the sound generating element, and superposing the first interference signal and the third signal in the air propagation process to form a fourth signal output until the amplitude or intelligibility of the fourth signal at the point B or the point C is lower than a first preset threshold value, and recording a signal parameter value corresponding to the second training signal at the moment.

For another example, when the handheld terminal device 100-2 of the user B is located in a square, and for acquiring any one of a plurality of locations around the user B, and the handheld terminal device 100-2 of the user B listens to the second signal from the terminal device 100-1, modifying at least one attribute parameter of the second signal, and training the second signal until the amplitude or intelligibility of a fourth signal, which is obtained by combining the first interference signal and the third signal after training the second signal at the any one location, is lower than a first preset threshold, and then recording a signal parameter value corresponding to the training second signal.

The two examples are only for the same call scenario, and the signal parameter value corresponding to the first interference signal is determined based on the distances between the other users around the user B and the user B.

For example, in the embodiment of the present application, a simulation test may be performed on different call scenarios based on the condition that the distances between other users around the user B and the user B are the same, so as to obtain a signal parameter value corresponding to the first interference signal.

For example, when the user B holds the terminal device 100-2, the first interference signal may be different due to different personal habits, such as a case where the user's ear is closer to the terminal device 100-2, a case where the user's ear is farther from the terminal device 100-2, and a case where the user's ear is farther from the terminal device 100-2. Therefore, in the embodiment of the present application, under the same call scenario and under the condition that the distances between other users around the user B and the user B are the same, at least one attribute parameter of the second signal may be modified and the second signal may be trained respectively under the condition that the distances between the ear of the user B and the terminal device 100-2 are different, so as to obtain a signal parameter value corresponding to the first interference signal.

For another example, as another embodiment, the corresponding first interference signal may be different due to other characteristics of the second signal, such as the second signal being a male acoustic wave signal or the second signal being a female acoustic wave signal. Or, the second signal is an english sound wave signal or a chinese sound wave signal, and the corresponding first interference signals may be different. Therefore, the embodiment of the application can perform testing with different types of second signals when determining the signal parameter value of the first interference signal. For example, for the same communication environment, a male sound wave signal and a female sound wave signal are respectively tested to obtain corresponding first interference signals, and then signal parameter values corresponding to the first interference signals are determined. The call environment herein may refer to a call scenario and/or distances between other users around the user B and the user B, and the like.

For another example, other users around user B may be dispersed within a 360 ° range around user B, or may be located only within a certain angular area around user B, as shown in fig. 7. Fig. 8 illustrates that there are 3 other users (e.g., 3 users C shown in fig. 7) around the user B, and as can be seen from fig. 7, the 3 other users C are located within an area a around the user B, where the area a is a sector area with a central angle of 90 °. For convenience of description, an area where other users are located around the user B is hereinafter referred to as a target area.

Generally speaking, the larger the target area is, the more the types of the attribute parameters of the training second signal are, the higher the complexity is, and the worse the effect of avoiding the leakage of the privacy information is. Moreover, the terminal device 100-2 occupies more system resources when generating the first interference signal based on more attribute parameters.

In view of this situation, in order to reduce the complexity of the attribute parameters and improve the effect of privacy information disclosure, the embodiment of the present application may also selectively train the attribute parameters of the second signal based on the target area, instead of training all the attribute parameters of the second signal, so that the types of the trained attribute parameters are less, and the complexity is reduced.

Specifically, the attribute parameters corresponding to different target areas are also different. The embodiment of the application can simulate the relative position relation between other users and the user B in advance, namely simulate a plurality of target areas. For each simulated target area, the embodiment of the present application may modify some or all of the at least one attribute parameter of the second signal, and train the second signal until the intelligibility of a fourth signal synthesized at the test location by the first interfering signal and the third signal obtained after the training is less than a first preset threshold.

For example, the attribute parameters of the trained second signal may be different for different target areas, and the effect of the obtained first interference signal on preventing the disclosure of the privacy information is all different. For example, a first target area around the user B corresponds to a first set of attribute parameters, a second target area around the user B corresponds to a second set of attribute parameters, the first set of attribute parameters is different from the second set of attribute parameters, and the first set of attribute parameters is more than the second set of attribute parameters in kind, so that the effect of preventing the leakage of the privacy information by the first interference signal obtained by training the second signal through the first set of attribute parameters is better than the effect of preventing the leakage of the privacy information by the first interference signal obtained by training the second signal through the second set of attribute parameters.

According to the method and the device, the corresponding attribute parameters can be determined based on the target area, and the complexity of the training attribute parameters is reduced because the considered area is small and the selected attribute parameters are possibly few. Meanwhile, the target area is the area where other users are located, so the attribute parameters obtained based on the target area have pertinence, and compared with the attribute parameters determined based on the 360-degree range around the user B, the effect of avoiding the privacy information leakage can be further improved.

It should be noted that, in a specific implementation process, the embodiment of the present application may perform a simulation test in advance based on one or more environment parameters of a call environment, so as to obtain a signal parameter value corresponding to the first interference signal. The environment parameter here refers to the call scene, the distance of the other users around the user B from the user B, the distance of the ear of the user B from the terminal device 100-2, the type of the second signal, but of course, other possible environment parameters are also possible, for example, whether the other users are on the left or right side of the ear of the user B, etc.

The embodiment of the application determines the signal parameter value of the first interference signal, and may establish a mapping relationship between the call environment and the signal parameter value of the first interference signal, or may establish a mapping relationship between the environment parameter and the signal parameter value of the first interference signal. The mapping may be stored in the terminal device 100-2, so that the terminal device 100-2 may select the corresponding attribute parameter to generate the first interference signal based on the currently determined call environment and the mapping.

Specifically, in the conversation environment, the influence degrees of different environment parameters on the privacy information disclosure are all different. When the attribute parameter corresponding to the first interference signal is selected, the attribute parameter can be determined based on the priority of the influence degree on the privacy information leakage, all environment parameters do not need to be considered, and a simpler attribute parameter is selected as much as possible, so that the energy consumption of the terminal device 100-2 is saved.

Different environmental parameters may correspond to different signal parameter values, i.e. to different attribute parameters, i.e. different environmental parameters may correspond to different first interference signals. In the embodiment of the present application, a plurality of mapping relationships may be established in advance according to different environmental parameters. For example, if the environmental parameter indicates a closed space, the first mapping relationship corresponds to an attribute parameter, which may be amplitude; the environment parameter indicates an open space, and corresponds to a second mapping relationship, and the attribute parameter corresponding to the second mapping relationship may be a phase. For another example, if the environmental parameter indicates that the distance between the other user and the user B is short, the environmental parameter corresponds to a third mapping relationship, and the attribute parameter corresponding to the third mapping relationship may be a frequency domain; and if the environment parameter indicates that the distance between the other user and the user B is longer, the attribute parameter corresponding to the third mapping relation may be a time domain. Of course, the above is only an example, the environment parameter may be multiple, for example, if the environment parameter indicates a closed space and indicates that the distances between the other users and the user B are closer, the environment parameter corresponds to the fifth mapping relationship, and the attribute parameter corresponding to the third mapping relationship may be a frequency domain and an amplitude. The above are merely examples, and do not limit the actual correspondence relationship.

The method and the device can determine the priority of a plurality of environment parameters of the call environment in advance. For example, since the elevator space is relatively narrow and has echo, the call scene has a larger influence on the leakage of the privacy information than other environment parameters (such as the type of the second signal). At this time, the priority of the elevator is higher than the type of the second signal. For another example, since the square space is relatively open, the call scene has a smaller influence on the leakage of the privacy information than other environmental parameters (for example, the type of the second signal). At this time, the priority of the square is lower than the priority of the type of the second signal. In the same call scenario, the distance between the other user and the user B may have a larger influence on the leakage of the privacy information than other environment parameters (for example, the type of the second signal). At this time, the distances between the other users and the user B have a higher priority than the type of the second signal.

After the priorities of the plurality of environment parameters of the call environment are sequenced, based on the currently determined call environment and the priority of each environment parameter, a mapping relation corresponding to the environment parameter with the highest priority is selected from the plurality of mapping relations, so that the first interference signal is generated according to the selected mapping relation. For ease of understanding, how the terminal device 100-2 selects the mapping relationship to generate the first interference signal will be described below in terms of different communication environments.

A first call environment: there are other users in elevator and the elevator, and the second signal is girl's sound wave signal.

The terminal device 100-2 determines that the environmental parameters of the current call environment are the call scene and the type of the second signal, the call scene is an elevator, and at this time, the terminal device 100-2 selects a mapping relation corresponding to the elevator by using the elevator with higher priority as a reference condition.

Alternatively, in some examples, the terminal device 100-2 takes the type of the second signal having the higher priority as the reference condition. For example, the terminal device 100-2 may determine whether the user B is a boy or a girl based on the frequency information of the user B during the call, and mark the user B in the address book in advance, so that when the user B uses the terminal device 100-2 to make a call, the terminal device 100-2 may determine that the user B is a girl and select the mapping relationship corresponding to the girl sound wave signal.

Second call environment: and a plurality of other users exist in the square, and the distance between the other users and the user B is far or near.

The terminal device 100-2 determines that the environmental parameters of the current call environment are a call scene and a second signal, and the call scene is a square, at this time, the terminal device 100-2 selects a mapping relationship corresponding to the distance by using the distance between the user B and the other user with higher priority as a reference condition.

The two call environments are only exemplified by including two environment parameters, and actually, more than two environment parameters may be included. When the call environment includes more than two types of environment parameters, the embodiment of the present application determines the mapping relationship based on the priority of another environment parameter under the same priority, which is specifically similar to the selection method under the two types of call environments, and is not described here again.

Of course, in the embodiment of the present application, in order to ensure that privacy information is prevented from being leaked as much as possible, a mapping relationship may also be selected based on all environment parameters in a call environment, that is, the first interference signal is generated based on more attribute parameters.

For example, please refer to fig. 8, fig. 8 is a schematic transmission diagram of a second signal according to an embodiment of the present disclosure. Fig. 8 exemplifies that the current call environment in which the terminal device 100-2 is located is the first call environment described above. In fig. 8, the second signal is the signal S, the terminal device 100-2 selects the first interference signal (e.g., the signal Y1 shown in fig. 8) generated by the mapping relationship corresponding to the elevator, and after propagating and overlapping in the air in the third signal (e.g., the signal X1 shown in fig. 8), the fourth signal (e.g., the signal D1 shown in fig. 8) can be formed, and it can be seen from fig. 8 that the intensity of the signal D1 is low. For the purpose of distinguishing from the signal D2 hereinafter, it is assumed here that the amplitude or intelligibility of the signal D1 is below a second preset threshold. The terminal device 100-2 comprehensively considers the elevator and the chinese second signal, selects the first interference signal (e.g., signal Y2 shown in fig. 8) generated by the mapping relationship corresponding to the elevator and the second signal, and after superimposing the first interference signal on the third signal (e.g., signal X2 shown in fig. 8), the strength of the formed fourth signal (e.g., signal D2 shown in fig. 8) is lower than a third preset threshold, where the third preset threshold is lower than the second preset threshold.

In a possible embodiment, the priority of the target area is the highest, in this case, when the terminal device 100-2 connects the call of the terminal device 100-1, a camera, a distance sensor, and the like arranged on the terminal device 100-2 may be turned on to determine the target area of the other user with respect to the user B. After the terminal device 100-2 determines the target area, a first interference signal is generated based on a mapping relation corresponding to the target area, or the terminal device 100-2 determines the mapping relation based on the target area and other environmental parameters, and generates the first interference signal based on the determined mapping relation, so as to avoid the leakage of privacy information.

Considering that the terminal device 100-2 moves along with the movement of the user B when the terminal device 100-2 is in the middle of a call, the call environment in which the terminal device 100-2 is located may also change. For example, the terminal device 100-2 may move from a closed space to an open space with the user B, and may also move from an environment where other users exist to an environment where no other users are around. Therefore, in the call process, the current call environment can be determined in real time or periodically, so that the selected mapping relation is adaptively adjusted according to the currently determined call environment, and leakage of privacy information is better prevented.

For example, when the call environment is a target area, the embodiment of the application may periodically determine the target area to adaptively adjust the selected mapping relationship, that is, adjust the first interference signal, so as to improve the protection effect of the private information.

Referring to fig. 9, fig. 9 is a schematic transmission diagram of a second signal according to an embodiment of the present disclosure. Fig. 9 is an example in which the relative position of the user B and another user (e.g., the user C shown in fig. 9) around the user B changes while the terminal device 100-2 is in a call state. As can be seen from fig. 9, when the terminal device 100-2 determines that the user C moves from the target area a to the target area B through a sensor (e.g., a distance sensor, etc.) provided thereon, the terminal device 100-2 adjusts the adopted mapping relationship, and adjusts the currently adopted mapping relationship to the mapping relationship corresponding to the target area B. In fig. 9, the target area a and the target area B are illustrated by a dashed boundary line. For the sake of convenience of distinction, the first interference signal generated based on the mapping relationship corresponding to the target area a is the signal Y1 shown in fig. 9, the first interference signal generated based on the mapping relationship corresponding to the target area B is the signal Y2 shown in fig. 9, the third signal corresponding to the target area a is the signal X1 shown in fig. 10, and the third signal corresponding to the target area B is the signal X2 shown in fig. 9. The signal Y1 and the signal Y2 may be the same or different, and fig. 9 illustrates that the amplitude of the signal Y1 is different from the amplitude of the signal Y2.

Of course, the target area may be an area of 360 ° range around the user B. If the target area is an area of a 360-degree range around the user B, the complexity of the attribute parameter corresponding to the mapping relationship corresponding to the target area is high, and when the terminal device 100-2 generates the first interference signal based on the mapping relationship, the occupied system resource is large, and the time consumption is long. And if the terminal device 100-2 may be in a more complex reflection environment, in this case, there is a more complex superposition of the high frequency components of the third signal, and the shorter the wavelength of the high frequency signal is, if the intensity of the third signal is eliminated in a large range, the elimination of the intensity of the third signal can only be realized at a specific position, so that the effect of avoiding the disclosure of the privacy information is poor.

In view of this, as another possible implementation manner, for the case that the target area is an area of a 360 ° range around the user B, the embodiment of the present application may divide the target area into a plurality of sub-target areas. The mapping relationship corresponding to one sub-target area corresponds to a set of attribute parameters, and the terminal device 100-2 may periodically generate the first interference signal using the attribute parameters corresponding to the sub-target area, that is, periodically generate the first interference signal. Thus, for a sub-target area, other users in the sub-target area cannot interpret the third signal from the fourth signal if they receive the fourth signal. Even other users located in the sub-target area cannot receive the fourth signal due to the low strength of the fourth signal. In the next time period, that is, for another sub-target area adjacent to the sub-target area, other users in the other sub-target area cannot interpret the third signal from the fourth signal, or even cannot receive the fourth signal. That is, in a single time slot, the processing for avoiding the disclosure of the private information is performed only for one sub-target area, and in other time slots, the processing for avoiding the disclosure of the private information is performed by using the attribute parameters corresponding to the sub-target areas, so that the processing for avoiding the disclosure of the private information in the area of 360 ° around the user B can be realized. Thus, the privacy information leakage can be avoided in a small area for one sub-target area at a time, and the high-frequency voice signal can be better prevented from being leaked. According to the embodiment of the application, each sub-target area is scanned at the preset scanning speed, so that the intelligibility of the high-frequency component of the third signal in the area of the 360-degree range around the user B can be reduced.

Specifically, please refer to fig. 10, which is a schematic diagram of second signal transmission provided in the embodiment of the present application. The terminal device 100-2 may scan the area around the user B at a preset scanning speed when generating the first interference signal. A first interference signal (e.g., the signal Y1 shown in fig. 10) is generated based on the mapping relationship corresponding to the initially scanned first sub-target region (e.g., the region a shown in fig. 10), and the intensity of a fourth signal (e.g., the signal D1 shown in fig. 10) formed by propagating and overlapping the third signal (e.g., the signal X1 shown in fig. 10) in the air is lower than a certain threshold, for example, a fourth preset threshold. The second sub-target area (e.g., area B shown in fig. 10) is scanned in sequence, the first interference signal (e.g., signal Y2 shown in fig. 10) is generated based on the mapping relationship corresponding to the second sub-target area, and the intensity of the fourth signal (e.g., signal D2 shown in fig. 10) formed by propagating and overlapping the third signal (e.g., signal X2 shown in fig. 10) in the air is also lower than a certain threshold, for example, a fifth preset threshold. Then, a third sub-target area (e.g., area C shown in fig. 10) is scanned, a first interference signal (e.g., signal Y3 shown in fig. 10) is generated based on the mapping relationship corresponding to the second sub-target area, and the intensity of a fourth signal (e.g., signal D3 shown in fig. 10) formed by propagating and overlapping the third signal (e.g., signal X3 shown in fig. 10) in the air is also lower than a threshold, for example, a sixth preset threshold, until the terminal device 100-2 is scanned and the call is ended. The fourth preset threshold, the fifth preset threshold, and the sixth preset threshold may be the same or different, as long as the users around the user B cannot correctly interpret the third signal based on the fourth preset threshold, the fifth preset threshold, and the sixth preset threshold. It should be noted that the fourth preset threshold, the fifth preset threshold and the sixth preset threshold are only for better explaining fig. 10, and are not limited.

It should be noted that, the number and area of the plurality of sub-target regions are not limited in the embodiment of the present application. Specifically, the number or area of the sub-target regions may be determined based on the complexity of the attribute parameters and the effect of avoiding disclosure of the privacy information, for example, in one possible embodiment, the number of the plurality of sub-target regions may be 6, and the areas of the plurality of sub-target regions may be the same or different.

The terminal device 100-2 in the embodiment of the present application may generate the first interference Signal based on the second Signal and the mapping relationship, that is, the environmental parameter and the Signal parameter value of the first interference Signal, by using a built-in Digital Signal Processing (Digital Signal Processing) chip or other possible Signal generating devices. The DSP chip may transmit the generated first interference signal to a sound generating element, such as a handset, provided on the terminal device 100-2. Thus, one sound emitting element of the terminal device 100-2, for example, a handset provided on the terminal device 100-2, can output the second signal, and the other sound emitting element can output the first interference signal.

The sound generating element provided in the terminal device 100-2 in the embodiment of the present application may be one or more earphones or earphone-like sound generating elements. One or more sound generating elements may be disposed on the side of the terminal device opposite to the microphone, and for convenience of description, the side on which the microphone is disposed is referred to as the bottom of the terminal device, and the side opposite to the bottom is referred to as the top. Alternatively, one or more sound generating elements may be provided on the back side (the side opposite the display) of the terminal device, or alternatively, some sound generating elements may be provided on the top side and some sound generating elements may be provided on the back side of the terminal device.

It should be noted that, if the terminal device 100-2 outputs the first interference signal through the sound emitting element other than the handset provided by itself, the terminal device 100-2 preferentially selects the sound emitting element close to the handset of the terminal device 100-2 to output the first interference signal. For example, if the earpiece is provided at the top of the terminal device 100-2 and the sound emitting element is provided at the back of the terminal device 100-2, it is preferable to select the sound emitting element provided at the back of the terminal device 100-2 near the top. The sounding element is close to the receiver (sound source), so that the sounding element and the receiver are close to the sound wave signal emission condition, and the attribute parameter of the first interference signal is obtained by training the receiver as the sounding element, so that the effect of avoiding the privacy information leakage can be improved as much as possible.

In the above embodiment, when the terminal device 100-2 connects the call from the terminal device 100-1 or receives the second signal from the terminal device 100-1, the call environment in which the terminal device 100-2 is located is detected, and the first interference signal is generated according to the detected call environment. However, if the terminal device 100-2 listens to the call from the terminal device 100-1 in a relatively noisy environment, the third signal itself will be interfered by the noise in the environment, so that the intelligibility of the third signal can be reduced, and at this time, the possibility that other users near the user B hear the sound wave signal is low. In this case, the terminal device 100-2 may not need to generate the first interference signal to save energy consumption of the terminal device 100-2 as much as possible.

As another embodiment, the terminal device 100-2 may detect noise of an environment in which the terminal device 100-2 is located when a call from the terminal device 100-2 is connected, and determine whether to generate the first interference signal according to the magnitude of the detected noise. For example, the terminal device 100-2 may store an ambient noise threshold in advance, for example, 80dB, and when the ambient noise of the current environment where the terminal device 100-2 is located is greater than or equal to the ambient noise threshold, it may be considered that the current environment where the terminal device 100-2 is located is noisy, otherwise, the current environment where the terminal device 100-2 is located is quiet. When the terminal device 100-2 determines that the current environment is noisy, a first interference signal is generated.

Illustratively, when the terminal device 100-2 puts through a call from the terminal device 100-1, a microphone 440C provided on the terminal device 100-2, for example, may be activated to collect a sound wave signal, where the sound wave signal may be only noise from the environment in which the terminal device 100-2 is located, or may be noise from the environment in which the terminal device 100-2 is located, and a sound wave signal from the user B. The microphone 440C may transmit the collected acoustic signals to the processor 410, and the processor 410 may analyze the acoustic signals to determine the amount of noise in the environment in which the terminal device 100-2 is located.

When the terminal device 100-2 is in the process of a call, the environment of the terminal device 100-2 may change, for example, the terminal device 100-2 moves along with the movement of the user B. After the terminal device 100-2 connects the call from the terminal device 100-1, the processor 410 of the terminal device 100-2 may periodically analyze the sound wave signal collected by the microphone 440C to determine the noise level of the current environment of the terminal device 100-2 as accurately as possible. Meanwhile, the terminal device 100-2 may adaptively turn on a signal generating device, such as a DSP chip, for generating the first interference signal according to the noise level of the current environment of the terminal device 100-2, which is periodically detected, so that it may not be necessary to turn on the signal generating device of the terminal device 100-2 all the time, thereby saving the energy consumption of the terminal device 100-2.

In another embodiment, the mapping relation stored by the terminal device 100-2 for generating the first interference signal may be updated to try to improve the possibility of avoiding disclosure of the privacy information.

Specifically, the terminal device 100-2 may employ a sound collector such as a microphone disposed on the back of the terminal device 100-2 to collect a synthesized signal of the third signal output by the sound generating element of the terminal device 100-2 and the first interference signal, that is, a fourth signal. The terminal device 100-2 compares the strength of the acquired fourth signal with a preset threshold to determine whether the strength of the fourth signal satisfies a preset condition. For example, the preset threshold may be a more suitable volume value that user B can hear, but a volume value that is within a preset range from user B cannot hear. If the intensity of the fourth signal to be collected by the terminal device 100-2 is greater than the preset threshold, it is considered that the volume of the fourth signal is greater, and the probability that other users around the user B hear the fourth signal is greater. In this case, the terminal device 100-2 may update the mapping relationship for generating the first interference signal so that the strength of the fourth signal is less than the preset threshold.

For example, the terminal device 100-2 may employ a sound collector such as a microphone disposed on the back of the terminal device 100-2 to collect the fourth signal, so as to determine the possibility that other users around the user B interpret the third signal according to the volume value of the fourth signal. If the volume value of the fourth signal is greater than the preset threshold, it is considered that there is a high possibility that other users around the user B interpret the third signal, and at this time, the terminal device 100-2 may output a prompt message for prompting to adjust a signal parameter value in the mapping relationship. In a possible implementation manner, the prompt message may be a voice prompt message or a text prompt message, which is not limited in the embodiment of the present application.

The terminal device 100-2 may display an adjustment option on the display interface in response to an input operation for requesting adjustment of a signal parameter value in the mapping relation by the user when the input operation is detected. The adjustment option may indicate a value range of each signal parameter value in the mapping relationship, thereby providing a basis for a user to adjust the signal parameter value in the mapping relationship.

For example, the terminal device 100-2 may store the value range of the signal parameter value included in the mapping relationship for generating the first interference signal. When the terminal device 100-2 detects an input operation input by the user, the terminal device 100-2 may read the stored value range, thereby displaying the adjustment option. When receiving an input operation of a user for an adjustment option, the terminal device 100-2 may adjust a signal parameter value in the mapping relationship to a value indicated by the input operation in response to the input operation, so as to update the mapping relationship.

If the terminal device 100-2 determines that the volume value of the obtained fourth signal is still greater than the preset threshold value when the first interference signal is generated based on the updated mapping relationship, the terminal device 100-2 may continue to output the prompt information to prompt the user to continue to update the mapping relationship.

In one possible embodiment, the terminal device 100-2 may be provided with a function switch for updating the mapping relationship. When the terminal device 100-2 detects that the function switch is in an on state, updating the mapping relation; otherwise, the mapping relation is not updated. Still alternatively, the terminal device 100-2 may periodically update the mapping relationship, or the mapping relationship may be updated by the system customization.

The above embodiment describes how the terminal device 100-2 is in a quieter environment and how to avoid leakage of privacy information due to the third signal leaked from the terminal device 100-2. During the actual call, when the user B makes a call with the user a through the terminal device 100-2, the users around the user B may still hear the call signal from the user B to the user a, i.e. similar to the first signal. Hereinafter, a call signal made by the user B to the user a is referred to as a fifth signal.

In order to prevent the fifth signal from being heard by other users around the user B, which may cause leakage of privacy information, the embodiment of the present application may generate a second interference signal for interfering with the fifth signal through the sound emitting element. The second interference signal and the fifth signal are synthesized into a sixth signal in the air, so that the amplitude or intelligibility of the sixth signal is reduced, and the purpose of avoiding the leakage of the privacy information is achieved. Specifically, the generation method of the second interference signal is similar to the generation method of the first interference signal, so that the manner of generating the first interference signal by the sound generating element of the terminal device 100-2 may be referred to above, and details are not repeated here.

In some embodiments, when the fifth signal is collected by a sound collection element such as a microphone of the terminal device 100-2, the sound production element of the terminal device 100-2 generates a second interference signal and outputs the second interference signal. Here, the sound generating element for generating the second interference signal and the sound generating element for generating the first interference signal may be the same sound generating element or different sound generating elements.

The above embodiment describes how the terminal device 100-2 avoids disclosure of private information in a quieter environment. During the actual call, the terminal device 100-2 may be in a quiet environment or a noisy environment. If the terminal device 100-2 is in a relatively noisy environment, then the noise from the environment will also be picked up by the microphone of the terminal device 100-2 and used together with the fifth signal as the fifth signal input to the terminal device 100-1. This may cause the noise signal in the fifth signal from the terminal device 100-1 that is heard by the user a to be larger, which may degrade the experience of the user a.

In view of this, in the embodiment of the present application, if it is determined that the current environment where the terminal device 100-2 is located is noisy, noise reduction processing may be performed on the environmental noise to reduce noise carried by the fifth signal as much as possible, reduce the possibility of noise heard by the user a, and improve the call quality.

Specifically, the terminal device 100-2 collects a noise signal in an environment where the terminal device 100-2 is located and a fifth signal input by the user B through a sound collection element such as a microphone provided thereon, and performs noise reduction processing on the noise signal.

In one possible implementation, the terminal device 100-2 stores a noise reduction algorithm for reducing the volume of the ambient noise, and when the terminal device 100-1 determines that the volume of the ambient noise is greater than a preset threshold, performs noise reduction processing on the ambient noise based on the stored noise reduction algorithm. Therefore, the ambient noise signal in the fifth signal finally output by the sound-generating element is reduced, the possibility of noise heard by the user A is reduced, and the call quality is improved.

In combination with the foregoing embodiments and the related drawings, the embodiments of the present application provide a call method, which may be implemented in a terminal device (e.g., a mobile phone, a tablet computer, etc.) with an earphone and a microphone as well as a camera and a sensor as shown in the drawings. As shown in fig. 11, the method may include the steps of:

step S111, the terminal device detects a first operation for connecting the first user incoming call.

The terminal device may be the terminal device 100-2 described above, and the first user is the user a described above, which is taken as an example hereinafter.

And step S112, the terminal equipment responds to the first operation, and when the terminal equipment enters a call state, the current call environment of the terminal equipment is determined.

For example, when the terminal device enters a call state, the terminal device may turn on a sound sensor to determine noise in the environment in which the terminal device is located. The terminal device can also turn on a camera arranged on the terminal device to determine the current call scene of the terminal device, such as an elevator or a square, and whether other users exist around the terminal device. Alternatively, the terminal device may also turn on a distance sensor provided thereon to determine the distance between other users possibly existing around the terminal device and the terminal device.

Step S113, if the terminal device determines that the terminal device is currently in the first call environment, when receiving the second signal, generating and outputting a first interference signal according to the first call environment and the second signal.

And step S114, if the terminal equipment determines that the terminal equipment is currently in the first call environment, generating and outputting a second interference signal according to the first call environment and the fifth signal when the fifth signal is acquired.

The first call environment here may be understood as a call environment in which call contents are easily leaked, for example, the terminal device is in a quiet scene, and other users are present around the user currently using the terminal device.

The first interfering signal is generated based on the second signal and a mapping of an environmental parameter and a signal parameter value included in the speech environment for reducing intelligibility of the third signal. The fifth signal may be a signal emitted by the second user, i.e. the user using the terminal device. The second interfering signal is generated based on the fifth signal and a mapping of an environmental parameter and a signal parameter value included in the speech environment for reducing intelligibility of the fifth signal.

The first interference signal and the second interference signal may be the above-mentioned audio mixing signal, harmonic signal, frequency domain masking signal, time domain masking signal, and the like. The first interference signal or the second interference signal generated by the terminal device can be determined according to the current call environment of the terminal device, so as to avoid disclosure of privacy information as much as possible. Specifically, taking the example of generating the first interference signal by the terminal device, the terminal device stores a mapping relationship for generating the first interference signal, where the mapping relationship is a corresponding relationship between an environmental parameter and a signal parameter value, and the signal parameter value may be considered as a value of an attribute parameter of the signal. The terminal device may generate a first interference signal based on the environment parameter included in the determined call environment and the mapping relationship.

For example, the terminal device may determine in advance the relative position relationship between other users around the terminal device and the terminal device to determine the aforementioned target area. The terminal device preferentially selects the mapping relation corresponding to the target area from the plurality of stored mapping relations based on the target area to generate the corresponding first interference signal.

The terminal device outputs a second signal if the second signal is received, outputs a first interference signal when the first interference signal is generated, and outputs a second interference signal when the second interference signal is generated, in response to the first input operation.

Illustratively, the first sound-emitting element provided by the terminal device may output the second signal. After the first interference signal is generated by, for example, a DSP chip in the terminal device, the first interference signal may be output to a second sound generating element of the terminal device, and the first interference signal may be output by the second sound generating element. The second signal is propagated in the air through a third signal formed by the leakage of the terminal equipment, the first interference signal is also propagated in the air, and the third signal and the first interference signal form a fourth signal in the process of propagation. Since the first interference signal is generated based on the second signal, that is, the original signal representing the call content input by the first user, the first interference signal is generated based on the second signal, which is targeted, and the intelligibility of the third signal can be better reduced. For example, the first interference signal is a phase modulated, amplitude-like signal corresponding to the third signal from which the second signal is leaked. Therefore, the intensity of the fourth signal synthesized by the third signal and the first interference signal is lower, so that the possibility that other users around a listener hear the fourth signal can be reduced, the third signal cannot be correctly interpreted, and the purpose of protecting privacy information is achieved.

For example, a third sound generating element provided in the terminal device may output a second interference signal. The fifth signal propagates in the air, the second interfering signal also propagates in the air, and the fifth signal and the second interfering third signal are coupled in the process of propagating. The second interference signal can reduce the intelligibility of the fifth signal, so that the intelligibility of the signal formed after the fifth signal is coupled with the second interference signal is low, thereby reducing the possibility that the surrounding user correctly interprets the fifth signal and achieving the purpose of protecting privacy information.

In another embodiment, the method may further comprise:

the terminal device periodically determines the current call environment of the terminal device to adaptively adjust the mapping relation for generating the first interference signal or the second interference signal.

In another embodiment, when the terminal device enters the call state, whether to enter the noise reduction mode or the privacy protection mode may be determined based on the noise level of the call environment in which the terminal device is currently located. The noise reduction mode here refers to noise reduction processing of an acoustic wave signal received by the terminal device. The privacy protection mode may be a mode for generating the first interference signal or a mode for generating the second interference signal, and for convenience of distinction, the mode for generating the first interference signal is hereinafter referred to as the first privacy protection mode, and the mode for generating the second interference signal is hereinafter referred to as the second privacy protection mode.

Specifically, please refer to fig. 12, in step S121, the terminal device determines whether to enter the noise reduction mode according to the current call environment.

Illustratively, the terminal device may detect noise in the current call environment when entering the call state. If the amplitude of the environmental noise signal in the current call environment is higher than the preset threshold value, the terminal device can be considered to be in a relatively noisy environment, the possibility of privacy information leakage is low, and at the moment, the terminal device is determined not to enter a privacy protection mode. Therefore, a camera or a sensor does not need to be started to determine other types of call environments, such as a call place or whether other users exist around the user, so that the energy consumption of the terminal equipment is saved as much as possible.

However, in this case, if the terminal device is in a relatively noisy environment, a noise signal in the environment is picked up by the microphone together with the voice signal input by the user. In order to reduce the influence of noise on the voice signal input by the user and improve the call quality, the input voice signal needs to be subjected to noise reduction processing, and at this time, the terminal device determines to enter a noise reduction mode.

When the terminal equipment enters a noise reduction mode and the microphone collects the input fifth signal and the environmental noise signal, the environmental noise signal is subjected to noise reduction processing, so that the environmental noise signal in the second signal received by the terminal equipment is reduced finally, the possibility of noise received by a user is reduced, and the conversation quality is improved.

And step S122, the terminal equipment determines not to enter the noise reduction mode and judges whether to enter the privacy protection mode.

Specifically, if the amplitude of the ambient noise signal in the current call environment is lower than the preset threshold, the terminal device may be considered to be in a relatively quiet environment, and the possibility of privacy information leakage is high. At this time, the terminal device determines that the privacy-preserving mode can be entered.

Further, the terminal equipment starts a camera to detect whether other users exist in the call environment. And if the terminal equipment determines that other users do not exist around, the terminal equipment determines not to enter the privacy protection mode so as to save the energy consumption of the terminal equipment as much as possible. Otherwise, if the terminal device determines that there are other users around, the terminal device may determine to enter the privacy-preserving mode.

Specifically, in step S123, if the terminal device receives the second signal, the terminal device determines to enter the first privacy protection mode. In step S124, if the terminal device collects the fifth signal, the terminal device determines to enter the second privacy protection mode.

It will be appreciated that the terminal device, in order to implement the above-described functions, comprises corresponding hardware and/or software modules for performing the respective functions. The present application is capable of being implemented in hardware or a combination of hardware and computer software in conjunction with the exemplary algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, with the embodiment described in connection with the particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In this embodiment, the terminal device may be divided into functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module may be implemented in the form of hardware. It should be noted that the division of the modules in this embodiment is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

In the case of dividing each functional module by corresponding functions, fig. 13 shows a possible composition diagram of the terminal device 100-2 involved in the above embodiment, as shown in fig. 13, the terminal device 100-2 may include: a determination unit 1301, a judgment unit 1302, and a generation unit 1303.

Determination unit 1301 may be configured to support terminal device 100-2 to perform steps S111 and step 112, etc., and/or other processes for the techniques described herein.

The determination unit 1302 may be used to support the terminal device 100-2 to perform the above-mentioned steps S121 and 122, etc., and/or other processes for the techniques described herein.

The generating unit 1303 may be used to support the terminal device 100-2 to perform the above-described steps S113 and S114, etc., and/or other processes for the techniques described herein.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

The terminal device provided by the embodiment is used for executing the communication method, so that the same effect as the realization method can be achieved.

In case of employing an integrated unit, the terminal device 100-2 may include a processing module, a storage module, and a communication module. The processing module may be configured to control and manage the action of the terminal device 100-2, and for example, may be configured to support the terminal device to execute the steps executed by the determining unit 1301, the determining unit 1302, and the generating unit 1303. The storage module may be used to support the terminal device 100-2 to perform the above-described attribute parameters, as well as to store program codes and data, and the like. A communication module, which can be used to support the communication of the terminal device 100-2 with other devices.

The processing module may be a processor or a controller. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., a combination of one or more microprocessors, a Digital Signal Processing (DSP) and a microprocessor, or the like. The storage module may be a memory. The communication module may specifically be a radio frequency circuit, a bluetooth chip, a Wi-Fi chip, or other devices that interact with other terminal devices.

In an embodiment, when the processing module is a processor and the storage module is a memory, the terminal device according to this embodiment may be a device having the structure shown in fig. 3.

The embodiment further provides a computer storage medium, in which computer instructions are stored, and when the computer instructions are run on the terminal device 100-2, the terminal device 100-2 is caused to execute the related method steps to implement the communication method in the embodiment.

The embodiment also provides a computer program product, which when running on a computer, causes the computer to execute the relevant steps to implement the communication method in the above embodiment.

In addition, embodiments of the present application also provide an apparatus, which may be specifically a chip, a component or a module, and may include a processor and a memory connected to each other; the memory is used for storing computer execution instructions, and when the device runs, the processor can execute the computer execution instructions stored in the memory, so that the chip can execute the communication method in the above method embodiments.

The terminal device, the computer storage medium, the computer program product, or the chip provided in this embodiment are all configured to execute the corresponding method provided above, so that the beneficial effects achieved by the terminal device, the computer storage medium, the computer program product, or the chip may refer to the beneficial effects in the corresponding method provided above, and are not described herein again.

Through the description of the above embodiments, those skilled in the art will understand that, for convenience and simplicity of description, only the division of the above functional modules is used as an example, and in practical applications, the above function distribution may be completed by different functional modules as needed, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, a module or a unit may be divided into only one logic function, and may be implemented in other ways, for example, a plurality of units or components may be combined or integrated into another apparatus, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A conversation method is applied to terminal equipment with a conversation function, and is characterized by comprising the following steps:

detecting a first operation for connecting a first user incoming call;

responding to the first operation, receiving and outputting a first signal, wherein the first signal is obtained by the terminal equipment through a sound wave signal input by the first user; and

determining that the terminal device is currently in a first call environment, generating an interference signal, and outputting the interference signal, wherein the interference signal is used for reducing the intelligibility of a second signal leaked when the terminal device outputs the first signal, and the first call environment is an environment in which call content is easily leaked;

wherein generating the interference signal comprises:

acquiring environmental parameters of the first call environment where the terminal equipment is located currently through at least one sensor;

if at least two environmental parameters are collected, determining the priority of each environmental parameter of the at least two environmental parameters;

determining at least one signal parameter value corresponding to the at least two environment parameters according to a mapping relation corresponding to the environment parameter with the highest priority, wherein the mapping relation is a mapping relation between a preset environment parameter and a signal parameter value;

generating the interference signal in dependence on the at least one signal parameter value.

2. A conversation method is applied to terminal equipment with a conversation function, and is characterized by comprising the following steps:

detecting a first operation for connecting a first user incoming call;

responding to the first operation, and starting a sound collector;

determining that the terminal device is currently in a first call environment, generating an interference signal when a third signal from a second user using the terminal device is acquired, and outputting the interference signal, wherein the interference signal is used for reducing the intelligibility of the third signal;

wherein generating the interference signal comprises:

3. The method of claim 1 or 2, wherein determining that the terminal device is currently in a first telephony environment comprises:

collecting environmental sounds around the terminal equipment, and detecting whether other users except the second user exist around the terminal equipment;

and if the intensity of the environmental sound is lower than a first preset threshold value and other users exist around the terminal equipment, determining that the terminal equipment is currently in the first conversation environment.

4. The method of claim 3, further comprising:

receiving the first signal from the first user;

simulating a call environment in which the terminal device is located, and adjusting at least one signal parameter value of the first signal until intelligibility of a coupled signal of an interference signal and the second signal generated according to the adjusted at least one signal parameter value is lower than a second preset threshold, wherein the call environment comprises at least one environment parameter;

and creating a corresponding relation between the at least one environmental parameter and the at least one signal parameter value to obtain the mapping relation.

5. The method of claim 3, further comprising:

collecting a third signal from the second user;

simulating a call environment in which the terminal device is located, and adjusting at least one signal parameter value of the third signal until intelligibility of a coupled signal of an interference signal and the third signal generated according to the adjusted at least one signal parameter value is lower than a third preset threshold, wherein the call environment comprises at least one environment parameter;

6. The method of claim 3, wherein generating the interference signal comprises:

if the at least one environmental parameter is determined to comprise a first environmental parameter, determining at least one signal parameter value corresponding to the first environmental parameter; the first environment parameter is used for indicating that the other users are located in a sector area within 360 degrees of the terminal equipment, and the central angle of the sector area is an acute angle;

the interference signal is generated periodically in dependence of at least one signal parameter value.

7. The method of claim 3, further comprising:

after the first signal and the interference signal are output, acquiring a fourth signal, wherein the fourth signal is a mixed signal of the interference signal and the second signal;

and if the strength of the fourth signal is determined to be greater than a fourth preset threshold, outputting first prompt information, wherein the first prompt information is used for prompting to adjust a signal parameter value in the mapping relation.

8. The method of claim 3, further comprising:

after the interference signal is output, acquiring a fifth signal, wherein the fifth signal is a mixed signal of the interference signal and a third signal from a second user;

and if the strength of the fifth signal is determined to be greater than a fifth preset threshold, outputting second prompt information, wherein the second prompt information is used for prompting to adjust the signal parameter value in the mapping relation.

9. The method of claim 3, further comprising:

detecting an input second operation, wherein the second operation is used for requesting to adjust a signal parameter value in the mapping relation;

responding to the second operation, displaying a prompt interface, wherein the prompt interface comprises an adjustment option, and the adjustment option is used for indicating the value range of the signal parameter value in the mapping relation;

detecting a third operation input aiming at the adjustment option, wherein the third operation is used for indicating values selected in the value ranges of the signal parameter values respectively;

and responding to the third operation, and adjusting the signal parameter value in the mapping relation to the value indicated by the third operation.

10. A terminal device, characterized in that the device comprises at least one sensor, a processor and a memory;

the memory has stored therein program instructions;

the program instructions, when executed, cause the terminal device to perform the method of any of claims 1 to 9.

11. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a computer program which, when run on a terminal device, causes the terminal device to carry out the method according to any one of claims 1 to 9.