CN107277209B - Call adjustment method and mobile terminal - Google Patents
Call adjustment method and mobile terminal Download PDFInfo
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- CN107277209B CN107277209B CN201710625964.9A CN201710625964A CN107277209B CN 107277209 B CN107277209 B CN 107277209B CN 201710625964 A CN201710625964 A CN 201710625964A CN 107277209 B CN107277209 B CN 107277209B
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Abstract
The embodiment of the invention discloses a call adjusting method and a mobile terminal, wherein the call adjusting method comprises the following steps: receiving a downlink audio signal of an opposite terminal in a call process, and acquiring an uplink audio signal of a home terminal; according to the downlink audio signal and the echo cancellation parameters, an echo signal in the uplink audio signal is cancelled to obtain an uplink audio signal to be sent; and judging whether echo interference exists in the uplink audio signal to be sent according to the downlink audio signal, and if the echo interference exists, adjusting the echo cancellation parameter. Therefore, the manpower and time for adjusting the echo cancellation parameters are saved, and the appropriate echo cancellation parameters can be determined according to the actual call scene of the user, so that a better echo cancellation effect is obtained.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a call adjusting method and a mobile terminal.
Background
With the popularization of mobile terminals, the frequency of using mobile terminals by users is higher and higher. The importance of a call to a user is obvious as the most basic function of mobile terminal communication. The good conversation can not only make the communication between users clearer, but also make the whole conversation process smoother, and reduce the dysphoria of the conversation of the users.
The communication process in the mobile terminal comprises an uplink audio signal and a downlink audio signal, wherein the uplink audio signal refers to an audio signal recorded by an audio acquisition device such as a microphone at the home terminal, is subjected to analog-to-digital conversion, is sent to a modem, and is modulated and then sent to an opposite terminal through an antenna; the downlink audio signal refers to an audio signal which is received by the mobile terminal from the opposite terminal, is subjected to digital-to-analog conversion and is played by the electroacoustic device at the local terminal. The echo signal of the mobile terminal means that the downlink audio signal is played by an electroacoustic device at the home terminal and then picked up by a microphone at the home terminal, and the uplink echo cancellation is not thorough, so that the uplink audio signal is mixed into the downlink audio signal when being sent to the opposite terminal, and the opposite terminal can hear the own voice, thereby affecting the experience of the user in conversation.
In the existing call adjustment method, usually a tester performs repeated subjective listening test, and then the echo cancellation parameters meeting the standards are solidified into the mobile terminal, so that not only is manpower and time wasted in the debugging process, but also once the external environment of the mobile terminal changes, the echo cancellation is abnormal, and the call cannot be effectively adjusted.
Disclosure of Invention
The embodiment of the invention provides a call adjusting method and a mobile terminal, and aims to solve the problem that echo is easy to occur in a call process.
In a first aspect, a method for adjusting a call is provided, where the method includes:
receiving a downlink audio signal of an opposite terminal in a call process, and acquiring an uplink audio signal of a home terminal;
according to the downlink audio signal and the echo cancellation parameters, eliminating an echo signal in the uplink audio signal to obtain an uplink audio signal to be sent;
judging whether echo interference exists in the uplink audio signal to be sent according to the downlink audio signal, wherein the echo interference refers to interference caused by an echo signal which is not eliminated in the uplink audio signal to the opposite terminal;
and if echo interference exists, adjusting the echo cancellation parameters.
In a second aspect, an embodiment of the present invention further provides a mobile terminal, including:
the call module is used for receiving a downlink audio signal of the opposite terminal in the call process and acquiring an uplink audio signal of the home terminal;
the echo cancellation module is used for canceling an echo signal in the uplink audio signal according to the downlink audio signal and the echo cancellation parameter to obtain an uplink audio signal to be sent;
a detection module, configured to determine whether echo interference exists in the uplink audio signal to be sent according to the downlink audio signal, where the echo interference is interference caused by an echo signal that is not cancelled in the uplink audio signal to the opposite terminal;
and the adjusting module is used for adjusting the echo cancellation parameters if echo interference exists.
In a third aspect, an embodiment of the present invention further provides a mobile terminal, including a processor, a memory, and a call adjustment program stored on the memory and operable on the processor, where the call adjustment program implements the steps of the call adjustment method when executed by the processor.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where a call adjustment program is stored on the computer-readable storage medium, and when being executed by a processor, the call adjustment program implements the steps of the call adjustment method.
To sum up, in the embodiment of the present invention, a downlink audio signal of an opposite end is received in a call process, an uplink audio signal of a home end is collected, an echo signal in the uplink audio signal is cancelled according to the downlink audio signal and an echo cancellation parameter, after an uplink audio signal to be sent is obtained, whether echo interference exists in the uplink audio signal to be sent is determined according to the downlink audio signal, and if echo interference exists, the echo cancellation parameter is adjusted. Therefore, the manpower and time for adjusting the echo cancellation parameters are saved, and the appropriate echo cancellation parameters can be determined according to the actual call scene of the user, so that a better echo cancellation effect is obtained.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a flowchart of a call adjustment method according to an embodiment of the present invention;
fig. 2 is a flow chart of another call adjustment method according to an embodiment of the present invention;
fig. 3 is a flowchart of a call adjustment method according to another embodiment of the present invention;
fig. 4 is a flowchart of a call adjustment method according to another embodiment of the present invention;
FIG. 5 is a block diagram of a mobile terminal of an embodiment of the present invention;
FIG. 6 is a block diagram of another mobile terminal of an embodiment of the present invention;
fig. 7 is a block diagram of yet another mobile terminal of an embodiment of the present invention;
fig. 8 is a block diagram of yet another mobile terminal according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flowchart of a call adjustment method in the embodiment of the present invention is shown, where the method provided in this embodiment may be executed by a mobile terminal, where the mobile terminal includes but is not limited to a mobile terminal device such as a mobile phone and a tablet computer, and the method may be applied to wireless calls of various systems, and may also be used in video and call chatting of communication software such as WeChat and QQ, and the call adjustment method includes:
step 101, receiving a downlink audio signal of an opposite terminal in a call process, and acquiring an uplink audio signal of a home terminal.
The call process is typically conducted between the home terminal and the opposite terminal of the mobile terminal. In the process of the call between the home terminal and the opposite terminal, the mobile terminal of the home terminal can receive the downlink audio signal of the opposite terminal firstly. After receiving the downlink audio Signal, the downlink audio Signal is processed by a Digital Signal Processor (DSP), and sent to an audio power amplifier for amplification, and then converted into an Analog Signal by a Digital-to-Analog Converter (DAC), and played by an audio device such as a speaker and a receiver, thereby completing the downlink transmission process of the downlink audio Signal. Before the DAC conversion of the downlink audio signal, the downlink audio signal may be intercepted and stored as a basis for echo cancellation and a basis for determining an echo cancellation effect.
After playing the downlink audio signal through the electroacoustic device, the mobile terminal at the home terminal is picked up by a pickup device such as a microphone and becomes a part of the uplink audio signal. After being converted into Digital signals by an Analog to Digital Converter (ADC), the Digital signals can be sent to an audio power amplifier for amplification.
Specifically, when receiving a downlink audio signal of the opposite end in the call process, the method may receive a preset downlink audio signal simulating a real call scene, and may also receive a downlink audio signal of an actual call sent by the base station, and decode the received downlink audio signal. When a real conversation scene is simulated, the simulation method can be realized by playing a specific audio signal sound source.
And 102, eliminating an echo signal in the uplink audio signal according to the downlink audio signal and the echo elimination parameter to obtain the uplink audio signal to be sent.
The downlink audio signals played by the electroacoustic device can be picked up by pickup devices such as a microphone and become echo signals in the uplink audio signals. In order to eliminate the echo signal, the echo signal in the uplink audio signal may be identified according to the downlink audio signal acquired and stored in the downlink communication process. And then, eliminating the identified echo signal according to the echo elimination parameter, thereby obtaining an uplink audio signal to be sent.
In practical application, the bottom noise of the uplink audio signal can be suppressed, so that the tone quality of the uplink audio signal is improved.
In practical application, as the external environment of the mobile terminal changes, the echo signal in the uplink audio signal is cancelled through step 102, which is difficult to ensure that the echo signal is completely cancelled, and if the residual echo signal is still large, the opposite end can still hear the echo, which causes interference to the call. Therefore, whether echo interference exists in the uplink audio signal to be sent can be judged according to the downlink audio signal. The echo interference refers to interference of an echo signal which is not cancelled in an uplink audio signal to an opposite end of a call.
Specifically, whether preset keywords exist in text information corresponding to the downlink audio signal or not can be judged, if yes, it is determined that echo interference exists in the uplink audio signal to be sent, wherein the keywords can be words which may be mentioned when the echo is heard in the actual call process, such as "i can hear own voice" or "echo exists", so as to represent that the echo signal exists in the call.
Or judging whether the volume amplitude of the echo signal in the uplink audio signal to be sent exceeds a volume threshold according to the downlink audio signal, and if so, determining that echo interference exists in the uplink audio signal to be sent.
After judging whether echo interference exists in the uplink audio signal to be transmitted, if echo interference exists, executing step 104 to adjust the echo parameter so as to reduce the echo interference.
When the echo interference is determined to exist, the echo cancellation effect can be improved by adjusting the echo cancellation parameters. Specifically, the echo cancellation parameters may be automatically adjusted according to the volume amplitude of the echo signal in the uplink audio signal to be sent. Control instructions for the echo can also be obtained from the user interface, and the echo cancellation parameters are manually adjusted according to the control instructions.
In practical applications, when the call is over, the adjustment of the echo cancellation parameters may be cancelled to return to the original echo cancellation parameters. Therefore, the phenomenon that the uplink audio signal sent by the home terminal is damaged due to excessive echo cancellation caused by environment change in the next call can be avoided.
In summary, in the embodiment of the present invention, a downlink audio signal of an opposite end is received during a call, an uplink audio signal of a home end is acquired, an echo signal in the uplink audio signal is cancelled according to the downlink audio signal and an echo cancellation parameter, after an uplink audio signal to be sent is obtained, whether echo interference exists in the uplink audio signal to be sent is determined according to the downlink audio signal, and if echo interference exists, the echo cancellation parameter is adjusted. Therefore, the manpower and time for adjusting the echo cancellation parameters are saved, and the appropriate echo cancellation parameters can be determined according to the actual call scene of the user, so that a better echo cancellation effect is obtained.
Referring to fig. 2, a flowchart of another call adjustment method according to an embodiment of the present invention is shown. The method provided by the embodiment can be executed by the mobile terminal, and the call adjustment method comprises the following steps:
When the mobile terminal needs to be debugged for echo, the mobile terminal simulates a real call scene, opens a call uplink and downlink channel to be debugged, and plays a specific audio signal sound source at a receiving end for receiving a downlink audio signal. The audio signal sound source can be divided into three sections, namely a voice signal with more low-frequency components, a voice signal with more intermediate-frequency components and a voice signal with more high-frequency components.
After receiving the downlink audio signal corresponding to the audio signal sound source, the downlink audio signal is processed by the DSP and is sent to the audio power amplifier for amplification, and then is converted into an analog signal by the DAC, and then is played by the audio devices such as a loudspeaker, a receiver and the like, so that the downlink transmission process of the downlink audio signal is completed. Before the DAC conversion of the downlink audio signal, the downlink audio signal may be acquired and stored as a basis for echo cancellation, and a basis for determining whether echo interference exists in the uplink audio signal to be transmitted.
Because the real conversation scene is simulated by playing the specific audio signal sound source, wireless signals can be received without an antenna, and the signals can be decoded without a modem, thereby eliminating the interference of a network and judging the actual conversation effect more accurately.
After the mobile terminal at the home terminal plays the downlink audio signal through the electroacoustic device, the downlink audio signal can be picked up by a pickup device such as a microphone, and an uplink audio signal is formed. After being converted into digital signals by the ADC, the digital signals can be sent to an audio power amplifier for amplification processing.
And 203, eliminating the echo signal in the uplink audio signal according to the downlink audio signal and the echo elimination parameter to obtain the uplink audio signal to be sent.
For the uplink audio signal amplified by the audio power amplifier, firstly, according to the downlink audio signal acquired and stored in the downlink communication process, the echo signal in the uplink audio signal is identified. And then, eliminating the identified echo signal according to the echo elimination parameter. In order to improve the tone quality of the uplink audio signal, the bottom noise of the uplink audio signal can be suppressed, so that the uplink audio signal to be sent is obtained.
Specifically, the echo signal remaining in the uplink audio signal may be identified by comparing the uplink audio signal to be transmitted with the downlink audio signal acquired in the downlink communication process. If the volume amplitude of the echo signal remaining in the uplink audio signal to be sent does not exceed the volume threshold, indicating information representing that the echo is completely eliminated can be sent to a display interface of the mobile terminal. And if the volume amplitude of the echo signal remained in the uplink audio signal to be sent exceeds the volume threshold, determining that echo interference exists in the uplink audio signal to be sent. The residual proportion of the echo signal can be determined according to the volume amplitude of the residual echo signal and the volume amplitude of the received downlink audio signal, and the residual proportion information of the echo signal is sent to a display interface of the mobile terminal for reference.
In addition, the uplink audio signal to be sent can be played through an external loudspeaker and other electroacoustic devices, and subjective judgment can be carried out through hearing by a user. And if the result of the subjective judgment is no echo, determining that the echo is completely eliminated. If the result of the subjective re-determination is that there is an echo, step 205 is executed to adjust the echo parameter to reduce the echo interference.
After the user determines that there is echo interference through subjective judgment, a control instruction of the user for the echo may be obtained, for example, after the user hears the echo, a echo cancellation enhancement button may be clicked on a display interface of the mobile terminal, or a level of echo cancellation may be selected. After receiving the control command, the mobile terminal can adjust the echo cancellation parameters accordingly.
In summary, in the embodiment of the present invention, the downlink audio signal simulating the real call scene is received, and the uplink audio signal of the home terminal is collected. After an echo signal in an uplink audio signal is eliminated according to a downlink audio signal and an echo cancellation parameter to obtain an uplink audio signal to be sent, whether echo interference exists in the uplink audio signal to be sent is judged according to the downlink audio signal, and if the echo interference exists, the echo cancellation parameter is adjusted. Therefore, the echo can be debugged without actually making a call by the user, the labor and time for debugging the echo are effectively saved, the interference of a network is eliminated, and the actual effect of the call is more accurately judged.
Referring to fig. 3, a flowchart of a call adjustment method according to another embodiment of the present invention is shown. The method provided by the embodiment can be executed by the mobile terminal, and the call adjustment method comprises the following steps:
In the actual call process, a downlink audio signal corresponding to the content of the opposite-end call can be received from the base station, and the received downlink audio signal is decoded through the modem.
After the mobile terminal at the home terminal plays the downlink audio signal through the electroacoustic device, the downlink audio signal is picked up by a pickup device such as a microphone, and a part of the uplink audio signal is formed. After being converted into digital signals by the ADC, the digital signals can be sent to an audio power amplifier for amplification processing.
And 303, eliminating an echo signal in the uplink audio signal according to the downlink audio signal and the echo cancellation parameter to obtain an uplink audio signal to be sent.
Specifically, whether preset keywords exist in text information corresponding to the downlink audio signal or not can be judged, if yes, it is determined that echo interference exists in the uplink audio signal to be sent, wherein the keywords can be words which may be mentioned when the echo is heard in the actual call process, such as "i can hear own voice" or "echo exists", so as to represent that the echo signal exists in the call. I.e. whether echo interference is present is determined by subjective judgment.
Or judging whether the volume amplitude of the echo signal in the uplink audio signal to be sent exceeds a volume threshold according to the downlink audio signal, and if so, determining that echo interference exists in the uplink audio signal to be sent. I.e. whether echo interference is present is determined by objective judgment.
In practical applications, the above subjective and objective determination methods may be adopted to determine whether echo interference exists, and if the determination result of any method is that echo interference exists, step 305 is executed to adjust the echo parameter to reduce echo interference.
Specifically, several echo cancellation levels can be preset in the mobile terminal, and different levels correspond to different echo cancellation effects. For example, the higher the level of echo cancellation, the cleaner the echo is cancelled, the less the echo remains, and the better the corresponding echo cancellation effect.
After determining that the echo interference exists, the mobile terminal can automatically adjust the echo cancellation level to achieve a better echo cancellation effect. After determining that the echo interference exists, the level can be increased by one level based on the level of the current echo cancellation until the echo interference does not exist any more. In practical applications, in order to cope with a specific environment, the echo cancellation level may be adjusted to a higher level, however, this level is not necessarily suitable for a subsequent call, and an excessively high echo cancellation level may cause damage to an upstream audio signal of a normal call at the local end. Thus, the adjustment of the echo cancellation parameters may be undone at the end of the call to revert back to the original echo cancellation parameters. Therefore, excessive echo cancellation caused by environment change in the next call can be avoided.
In summary, in the embodiment of the present invention, the downlink audio signal of the actual call sent by the base station is received, and the uplink audio signal of the home terminal is collected. After an echo signal in an uplink audio signal is eliminated according to a downlink audio signal and an echo cancellation parameter to obtain an uplink audio signal to be sent, whether echo interference exists in the uplink audio signal to be sent is judged according to the downlink audio signal, and if the echo interference exists, the echo cancellation parameter is adjusted. Therefore, the proper echo cancellation parameters can be determined according to the actual call scene of the user, and further incomplete echo cancellation or excessive echo cancellation is effectively avoided.
Referring to fig. 4, a flowchart of a call adjustment method according to another embodiment of the present invention is shown. The method provided by the embodiment can be executed by the mobile terminal, and the call adjustment method comprises the following steps:
In the actual call process, a downlink audio signal corresponding to the content of the opposite-end call can be received from the base station, and the received downlink audio signal is decoded through the modem.
After the mobile terminal at the home terminal plays the downlink audio signal through the electroacoustic device, the downlink audio signal is picked up by a pickup device such as a microphone, and a part of the uplink audio signal is formed. After being converted into digital signals by the ADC, the digital signals can be sent to an audio power amplifier for amplification processing.
And step 403, eliminating the echo signal in the uplink audio signal according to the downlink audio signal and the echo cancellation parameter, so as to obtain an uplink audio signal to be sent.
And step 404, adjusting the echo cancellation parameters according to the control instruction of the user for the echo.
Specifically, in the process of the call between the user at the local terminal and the user at the opposite terminal, if the user at the opposite terminal hears the echo in feedback, the user at the local terminal is informed of the echo through a downlink audio signal. The user at the home terminal can select the echo cancellation level by operating the button for echo adjustment on the display interface. After receiving the control command, the mobile terminal can adjust the echo cancellation parameters accordingly.
In summary, in the embodiment of the present invention, the downlink audio signal of the actual call sent by the base station is received, and the uplink audio signal of the home terminal is collected. After the echo signal in the uplink audio signal is eliminated according to the downlink audio signal and the echo cancellation parameter to obtain the uplink audio signal to be sent, the echo cancellation parameter is adjusted according to a control instruction of a user for echo. Therefore, the user can manually adjust the echo cancellation parameters of the call according to the feedback of the opposite-end user in the actual call process, the automatic adjustment of the echo cancellation parameters under the unnecessary condition is avoided, and the user has more independent options.
Referring to fig. 5, a block diagram of a mobile terminal in an embodiment of the present invention is shown. The mobile terminal includes: a call module 51, an echo cancellation module 52, a detection module 53 and an adjustment module 54.
The call module 51 is configured to receive a downlink audio signal of an opposite terminal in a call process, and collect an uplink audio signal of a home terminal;
the echo cancellation module 52 is configured to cancel an echo signal in the uplink audio signal according to the downlink audio signal and the echo cancellation parameter, so as to obtain an uplink audio signal to be sent;
the detection module 53 is configured to determine whether echo interference exists in an uplink audio signal to be sent according to the downlink audio signal, where the echo interference is interference caused by an echo signal that is not cancelled in the uplink audio signal to an opposite terminal;
an adjusting module 54, configured to adjust the echo cancellation parameter if there is echo interference.
In summary, in the embodiment of the present invention, the call module 51 receives the downlink audio signal of the opposite end in the call process, and acquires the uplink audio signal of the local end, the echo cancellation module 52 cancels the echo signal in the uplink audio signal according to the downlink audio signal and the echo cancellation parameter to obtain the uplink audio signal to be sent, the detection module 53 determines whether there is echo interference in the uplink audio signal to be sent according to the downlink audio signal, and if there is echo interference, the adjustment module 54 adjusts the echo cancellation parameter. Therefore, the manpower and time for adjusting the echo cancellation parameters are saved, and the appropriate echo cancellation parameters can be determined according to the actual call scene of the user, so that a better echo cancellation effect is obtained.
Referring to fig. 6, in a preferred embodiment of the present invention, on the basis of fig. 5, the call module 51 includes: a simulated call receiving submodule 511 and a real call receiving submodule 512; the detection module 53 includes: a first detection submodule 531 and a second detection submodule 532; the adjustment module 54 includes: an automatic adjustment sub-module 541 and a manual adjustment sub-module 542.
The simulated call receiving submodule 511 is configured to receive a preset downlink audio signal simulating a real call scene; or
The real call receiving submodule 512 is configured to receive a downlink audio signal of an actual call sent by the base station, and decode the received downlink audio signal.
The first detection submodule 531 is configured to determine whether a keyword exists in text information corresponding to the downlink audio signal, and determine that echo interference exists in an uplink audio signal to be sent if the keyword exists, where the keyword is used to represent that an echo signal exists in a call.
The second detection submodule 532 is configured to determine whether a volume amplitude of an echo signal in the uplink audio signal to be sent exceeds a volume threshold according to the downlink audio signal, and if the volume amplitude exceeds the volume threshold, determine that echo interference exists in the uplink audio signal to be sent.
The automatic adjustment sub-module 541 is configured to adjust an echo cancellation parameter according to a volume amplitude of an echo signal in an uplink audio signal to be sent.
A manual adjustment sub-module 542 for obtaining control instructions for the echo from the user interface; and adjusting the echo cancellation parameters according to the control instruction.
Specifically, the first detection submodule 531 includes: an acquisition unit 5311 and a detection unit 5312.
The acquiring unit 5311 is configured to acquire a decoded downlink audio signal; the decoded downlink audio signal comprises text information of opposite-end conversation content;
the detecting unit 5312 is configured to detect whether the text information includes a keyword.
In addition, the mobile terminal further includes: and a resetting module 55, configured to cancel the adjustment of the echo cancellation parameter when the call is ended, so as to roll back to the initial echo cancellation parameter.
In summary, in the embodiment of the present invention, the call module 51 receives a preset downlink audio signal simulating a real call scene or a downlink audio signal of an actual call sent by a base station, and acquires an uplink audio signal of the home terminal. After the echo cancellation module 52 cancels the echo signal in the uplink audio signal according to the downlink audio signal and the echo cancellation parameter to obtain the uplink audio signal to be transmitted, the detection module 53 determines whether the uplink audio signal to be transmitted has echo interference according to the downlink audio signal, and if the uplink audio signal to be transmitted has echo interference, the adjustment module 54 adjusts the echo cancellation parameter. Therefore, the echo can be debugged without actually making a call by the user, and the interference of the network is effectively eliminated. And the appropriate echo cancellation parameters can be determined according to the actual call scene of the user, so that incomplete echo cancellation or excessive echo cancellation can be effectively avoided.
In addition, an embodiment of the present invention further provides a mobile terminal, including a processor, a memory, and a call adjustment program stored in the memory and capable of running on the processor, where the call adjustment program, when executed by the processor, implements each process of the above call adjustment method embodiment, and can achieve the same technical effect, and is not described herein again to avoid repetition.
On the other hand, an embodiment of the present invention further provides a computer-readable storage medium, where a call adjustment program is stored on the computer-readable storage medium, and when the call adjustment program is executed by a processor, the call adjustment program implements each process of the call adjustment method embodiment, and can achieve the same technical effect, and in order to avoid repetition, the call adjustment program is not described herein again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Specifically, fig. 7 is a block diagram of another mobile terminal according to an embodiment of the present invention. The mobile terminal 700 shown in fig. 7 includes: at least one processor 701, memory 702, at least one network interface 704, and other user interfaces 703. The various components in the mobile terminal 700 are coupled together by a bus system 705. It is understood that the bus system 705 is used to enable communications among the components. The bus system 705 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various busses are labeled in figure 7 as the bus system 705.
The user interface 703 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.
It is to be understood that the memory 702 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a programmable Read-only memory (PROM), an erasable programmable Read-only memory (erasabprom, EPROM), an electrically erasable programmable Read-only memory (EEPROM), or a flash memory. The volatile memory may be a Random Access Memory (RAM) which functions as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (staticiram, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (syncronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced synchronous SDRAM (ESDRAM), synchronous link SDRAM (SLDRAM), and direct memory bus SDRAM (DRRAM). The memory 702 of the systems and methods described in this embodiment of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 702 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 7021 and application programs 7022.
The operating system 7021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 7022 includes various applications, such as a media player (MediaPlayer), a Browser (Browser), and the like, for implementing various application services. Programs that implement methods in accordance with embodiments of the present invention can be included within application program 7022.
In the embodiment of the present invention, the mobile terminal 700 further includes: a call adjustment program stored on the memory 702 and executable on the processor 701, specifically, may be a call adjustment program in the application 7022, and when executed by the processor 701, implements the following steps: receiving a downlink audio signal of an opposite terminal in a call process, and acquiring an uplink audio signal of a home terminal; according to the downlink audio signal and the echo cancellation parameters, an echo signal in the uplink audio signal is cancelled to obtain an uplink audio signal to be sent; and judging whether echo interference exists in the uplink audio signal to be sent according to the downlink audio signal, and if the echo interference exists, adjusting the echo cancellation parameter.
The method disclosed in the above embodiments of the present invention may be applied to the processor 701, or implemented by the processor 701. The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The processor 701 may be a general-purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702, and performs the steps of the above method in combination with the hardware thereof. Specifically, the computer readable storage medium stores a call adjustment program, and the call adjustment program realizes the steps of the call adjustment method embodiment as described above when executed by the processor 701.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing units may be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions of the present application, or a combination thereof.
For a software implementation, the techniques of an embodiment of the invention may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions of the embodiments of the invention. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Optionally, the call adjustment program may further implement the following steps when executed by the processor 701: and judging whether keywords exist in text information corresponding to the downlink audio signal, and if yes, determining that echo interference exists in the uplink audio signal to be sent, wherein the keywords are used for representing that echo signals exist in a call.
Optionally, the call adjustment program may further implement the following steps when executed by the processor 701: and judging whether the volume amplitude of the echo signal in the uplink audio signal to be sent exceeds a volume threshold or not according to the downlink audio signal, and if so, determining that echo interference exists in the uplink audio signal to be sent.
Optionally, the call adjustment program may further implement the following steps when executed by the processor 701: acquiring a decoded downlink audio signal; the decoded downlink audio signal comprises text information of opposite-end conversation content; and detecting whether the text information contains keywords or not.
Optionally, the call adjustment program may further implement the following steps when executed by the processor 701: and adjusting the echo cancellation parameters according to the volume amplitude of the echo signal in the uplink audio signal to be sent.
Optionally, the call adjustment program may further implement the following steps when executed by the processor 701: acquiring a control instruction aiming at the echo from a user interface; and adjusting the echo cancellation parameters according to the control instruction.
Optionally, the call adjustment program may further implement the following steps when executed by the processor 701: receiving a preset downlink audio signal for simulating a real call scene; or receiving a downlink audio signal of an actual call sent by the base station, and decoding the received downlink audio signal.
Optionally, the call adjustment program may further implement the following steps when executed by the processor 701: when the call is ended, the adjustment of the echo cancellation parameters is cancelled so as to return to the initial echo cancellation parameters.
The mobile terminal 700 can implement the processes implemented by the mobile terminal in the foregoing embodiments, and details are not repeated here to avoid repetition.
To sum up, in the embodiment of the present invention, a downlink audio signal of an opposite end is received in a call process, an uplink audio signal of a home end is collected, an echo signal in the uplink audio signal is cancelled according to the downlink audio signal and an echo cancellation parameter, after an uplink audio signal to be sent is obtained, whether echo interference exists in the uplink audio signal to be sent is determined according to the downlink audio signal, and if echo interference exists, the echo cancellation parameter is adjusted. Therefore, the manpower and time for adjusting the echo cancellation parameters are saved, and the appropriate echo cancellation parameters can be determined according to the actual call scene of the user, so that a better echo cancellation effect is obtained.
Fig. 8 is a block diagram of yet another mobile terminal according to an embodiment of the present invention. Specifically, the mobile terminal in fig. 8 may be a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), or a vehicle-mounted computer.
The mobile terminal in fig. 8 includes a Radio Frequency (RF) circuit 810, a memory 820, an input unit 830, a display unit 840, a processor 860, an audio circuit 870, a wifi (wireless fidelity) module 880, and a power supply 890.
The input unit 830 may be used, among other things, to receive numeric or character information input by a user and to generate signal inputs related to user settings and function control of the mobile terminal. Specifically, in the embodiment of the present invention, the input unit 830 may include a touch panel 831. The touch panel 831, also referred to as a touch screen, can collect touch operations performed by a user on or near the touch panel 831 (e.g., operations performed by the user on the touch panel 831 using a finger, a stylus, or any other suitable object or accessory), and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 831 may include two portions, i.e., a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 860, and can receive and execute commands sent by the processor 860. In addition, the touch panel 831 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 831, the input unit 830 may include other input devices 832, and the other input devices 832 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
Among them, the display unit 840 may be used to display information input by a user or information provided to the user and various menu interfaces of the mobile terminal. The display unit 840 may include a display panel 841, and the display panel 841 may be alternatively configured in the form of an LCD or an organic light-emitting diode (OLED), or the like.
It should be noted that the touch panel 831 can overlay the display panel 841 to form a touch display screen, which, when it detects a touch operation thereon or nearby, is passed to the processor 860 to determine the type of touch event, and then the processor 860 provides a corresponding visual output on the touch display screen according to the type of touch event.
The touch display screen comprises an application program interface display area and a common control display area. The arrangement modes of the application program interface display area and the common control display area are not limited, and can be an arrangement mode which can distinguish two display areas, such as vertical arrangement, left-right arrangement and the like. The application interface display area may be used to display an interface of an application. Each interface may contain at least one interface element such as an icon and/or widget desktop control for an application. The application interface display area may also be an empty interface that does not contain any content. The common control display area is used for displaying controls with high utilization rate, such as application icons like setting buttons, interface numbers, scroll bars, phone book icons and the like.
The processor 860 is a control center of the mobile terminal, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the first memory 821 and calling data stored in the second memory 822, thereby performing overall monitoring of the mobile terminal. Optionally, processor 860 may include one or more processing units.
In this embodiment of the present invention, the mobile terminal in fig. 8 further includes: a call adjustment program stored on the first memory 821 and/or the second memory 822 and operable on the processor 860, the call adjustment program when executed by the processor 860 implementing the steps of: receiving a downlink audio signal of an opposite terminal in a call process, and acquiring an uplink audio signal of a home terminal; according to the downlink audio signal and the echo cancellation parameters, an echo signal in the uplink audio signal is cancelled to obtain an uplink audio signal to be sent; and judging whether echo interference exists in the uplink audio signal to be sent according to the downlink audio signal, and if the echo interference exists, adjusting the echo cancellation parameter.
Optionally, the call adjustment program when executed by the processor 860 may further implement the following steps: and judging whether keywords exist in text information corresponding to the downlink audio signal, and if yes, determining that echo interference exists in the uplink audio signal to be sent, wherein the keywords are used for representing that echo signals exist in a call.
Optionally, the call adjustment program when executed by the processor 860 may further implement the following steps: and judging whether the volume amplitude of the echo signal in the uplink audio signal to be sent exceeds a volume threshold or not according to the downlink audio signal, and if so, determining that echo interference exists in the uplink audio signal to be sent.
Optionally, the call adjustment program when executed by the processor 860 may further implement the following steps: acquiring a decoded downlink audio signal; the decoded downlink audio signal comprises text information of opposite-end conversation content; and detecting whether the text information contains keywords or not.
Optionally, the call adjustment program when executed by the processor 860 may further implement the following steps: and adjusting the echo cancellation parameters according to the volume amplitude of the echo signal in the uplink audio signal to be sent.
Optionally, the call adjustment program when executed by the processor 860 may further implement the following steps: acquiring a control instruction aiming at the echo from a user interface; and adjusting the echo cancellation parameters according to the control instruction.
Optionally, the call adjustment program when executed by the processor 860 may further implement the following steps: receiving a preset downlink audio signal for simulating a real call scene; or receiving a downlink audio signal of an actual call sent by the base station, and decoding the received downlink audio signal.
Optionally, the call adjustment program when executed by the processor 860 may further implement the following steps: when the call is ended, the adjustment of the echo cancellation parameters is cancelled so as to return to the initial echo cancellation parameters.
The mobile terminal can implement each process implemented by the mobile terminal in the foregoing embodiments, and details are not described here to avoid repetition.
As can be seen, in the mobile terminal in the embodiment of the present invention, the processor 860 receives the downlink audio signal of the opposite end during the call, collects the uplink audio signal of the local end, and eliminates the echo signal in the uplink audio signal according to the downlink audio signal and the echo cancellation parameter to obtain the uplink audio signal to be sent, and then determines whether there is echo interference in the uplink audio signal to be sent according to the downlink audio signal, and if there is echo interference, adjusts the echo cancellation parameter. Therefore, the manpower and time for adjusting the echo cancellation parameters are saved, and the appropriate echo cancellation parameters can be determined according to the actual call scene of the user, so that a better echo cancellation effect is obtained.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the 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 apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, 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 or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. 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 invention 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 functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a computer-readable storage medium, which includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. Specifically, the computer readable storage medium stores a call adjustment program, and the call adjustment program, when executed by the processor 860, implements the steps of the call adjustment method embodiments as described above. And the aforementioned computer-readable storage media comprise: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention 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 invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. A call adjustment method is applied to a mobile terminal, and is characterized by comprising the following steps:
receiving a downlink audio signal of an opposite terminal in a call process, and acquiring an uplink audio signal of a home terminal;
according to the downlink audio signal and the echo cancellation parameters, eliminating an echo signal in the uplink audio signal to obtain an uplink audio signal to be sent;
judging whether echo interference exists in the uplink audio signal to be sent according to the downlink audio signal, wherein the echo interference refers to interference caused by an echo signal which is not eliminated in the uplink audio signal to the opposite terminal;
if echo interference exists, adjusting the echo cancellation parameters;
wherein, according to the downlink audio signal and the echo cancellation parameter, canceling the echo signal in the uplink audio signal to obtain an uplink audio signal to be sent, including: according to the downlink audio signal acquired and stored in the downlink communication process, the echo signal in the uplink audio signal is identified, and the identified echo signal is eliminated according to the echo elimination parameter, so that the uplink audio signal to be sent is obtained;
wherein, the step of judging whether echo interference exists in the uplink audio signal to be sent according to the downlink audio signal comprises:
judging whether keywords exist in text information corresponding to the downlink audio signal, and if yes, determining that echo interference exists in the uplink audio signal to be sent, wherein the keywords are used for representing that echo signals exist in a call;
the step of determining whether echo interference exists in the uplink audio signal to be transmitted according to the downlink audio signal further includes:
and judging whether the volume amplitude of an echo signal in the uplink audio signal to be sent exceeds a volume threshold or not according to the downlink audio signal, and if so, determining that echo interference exists in the uplink audio signal to be sent.
2. The method according to claim 1, wherein the step of determining whether the text message corresponding to the downlink audio signal contains the keyword comprises:
acquiring a decoded downlink audio signal; wherein, the decoded downlink audio signal contains text information of the opposite terminal communication content;
and detecting whether the text information contains keywords or not.
3. The method of claim 1, wherein the step of adjusting the echo cancellation parameter comprises:
and adjusting the echo cancellation parameters according to the volume amplitude of the echo signal in the uplink audio signal to be sent.
4. The method of claim 1, wherein the step of adjusting the echo cancellation parameter further comprises:
acquiring a control instruction aiming at the echo from a user interface;
and adjusting the echo cancellation parameters according to the control instruction.
5. The method of claim 1, wherein receiving the downstream audio signal of the opposite terminal during the call comprises:
receiving a preset downlink audio signal for simulating a real call scene; or
And receiving a downlink audio signal of the actual call sent by the base station, and decoding the received downlink audio signal.
6. The method of claim 1, after adjusting the echo cancellation parameters, further comprising:
when the call is ended, the adjustment of the echo cancellation parameters is cancelled so as to return to the initial echo cancellation parameters.
7. A mobile terminal, comprising:
the call module is used for receiving a downlink audio signal of the opposite terminal in the call process and acquiring an uplink audio signal of the home terminal;
the echo cancellation module is used for canceling an echo signal in the uplink audio signal according to the downlink audio signal and the echo cancellation parameter to obtain an uplink audio signal to be sent;
a detection module, configured to determine whether echo interference exists in the uplink audio signal to be sent according to the downlink audio signal, where the echo interference is interference caused by an echo signal that is not cancelled in the uplink audio signal to the opposite terminal;
the adjusting module is used for adjusting the echo cancellation parameters if echo interference exists;
the echo cancellation module is specifically configured to identify the echo signal in the uplink audio signal according to the downlink audio signal acquired and stored in a downlink communication process, and cancel the identified echo signal according to the echo cancellation parameter to obtain the uplink audio signal to be sent;
the detection module comprises:
the first detection submodule is used for judging whether keywords exist in text information corresponding to the downlink audio signal or not, and if the keywords exist, determining that echo interference exists in the uplink audio signal to be sent, wherein the keywords are used for representing that echo signals exist in a call;
and the second detection submodule is used for judging whether the volume amplitude of an echo signal in the uplink audio signal to be sent exceeds a volume threshold value or not according to the downlink audio signal, and if the volume amplitude exceeds the volume threshold value, determining that echo interference exists in the uplink audio signal to be sent.
8. The mobile terminal of claim 7, wherein the first detection submodule comprises:
an obtaining unit, configured to obtain a decoded downlink audio signal; wherein, the decoded downlink audio signal contains text information of the opposite terminal communication content;
and the detection unit is used for detecting whether the text information contains keywords or not.
9. The mobile terminal of claim 7, wherein the adjusting module comprises:
and the automatic adjusting submodule is used for adjusting the echo cancellation parameters according to the volume amplitude of the echo signal in the uplink audio signal to be sent.
10. The mobile terminal of claim 7, wherein the adjusting module further comprises:
the manual adjustment submodule is used for acquiring a control instruction aiming at the echo from a user interface; and adjusting the echo cancellation parameters according to the control instruction.
11. The mobile terminal of claim 7, wherein the telephony module comprises:
the analog call receiving submodule is used for receiving a preset downlink audio signal for simulating a real call scene; or
And the real call receiving submodule is used for receiving the downlink audio signal of the actual call sent by the base station and decoding the received downlink audio signal.
12. The mobile terminal of claim 7, wherein the mobile terminal further comprises:
and the resetting module is used for canceling the adjustment of the echo cancellation parameters when the call is finished so as to return to the initial echo cancellation parameters.
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| CN109361827B (en) * | 2018-10-22 | 2021-02-09 | 杭州叙简科技股份有限公司 | Echo secondary suppression method for communication terminal |
| CN111314780B (en) * | 2020-03-27 | 2022-04-01 | 苏州科达科技股份有限公司 | Method and device for testing echo cancellation function and storage medium |
| CN111711881B (en) * | 2020-06-29 | 2022-02-18 | 深圳市科奈信科技有限公司 | Self-adaptive volume adjustment method according to environmental sound and wireless earphone |
| CN112153448B (en) * | 2020-10-08 | 2021-12-14 | 杭州知聊信息技术有限公司 | Audio processing method and system in video communication |
| CN113808609B (en) * | 2021-09-18 | 2024-07-19 | 展讯通信（上海）有限公司 | Echo detection method and device, computer readable storage medium and terminal equipment |
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