CN111478999A - Terminal, audio signal processing method, device, equipment and storage medium - Google Patents
Terminal, audio signal processing method, device, equipment and storage medium Download PDFInfo
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- CN111478999A CN111478999A CN202010266186.0A CN202010266186A CN111478999A CN 111478999 A CN111478999 A CN 111478999A CN 202010266186 A CN202010266186 A CN 202010266186A CN 111478999 A CN111478999 A CN 111478999A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/026—Details of the structure or mounting of specific components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
- H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
- H04M1/72433—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for voice messaging, e.g. dictaphones
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Abstract
The invention provides a terminal, an audio signal processing method, an audio signal processing device and a storage medium, wherein the terminal comprises a terminal body and at least two receivers, the terminal body comprises a screen side and a non-screen side, at least two first sound holes are arranged on the non-screen side, and the at least two first sound holes are positioned on different surfaces of the non-screen side; each receiver is respectively provided with a second sound outlet, at least one second sound outlet corresponds to at least one first sound outlet on the first surface in the non-screen side, at least one second sound outlet corresponds to at least one first sound outlet on the second surface in the non-screen side, the second surface is different from the first surface, and the phase of the audio signal in each receiver is different. By utilizing the technical scheme, the telephone receiver can be installed on the non-screen side of the terminal, the screen space of the terminal cannot be occupied, meanwhile, the directivity control of sound wave radiation can be realized at the first sound outlet of the terminal, and the problem of conversation of a comprehensive screen terminal is solved.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to a terminal, an audio signal processing method, an audio signal processing device, audio signal processing equipment and a storage medium.
Background
With the popularization of mobile terminals and the rapid development of electronic technologies, communication terminal devices (such as mobile phones), mobile computers, tablet computers and other devices are increasingly important in the life of people. The vision is the most important channel for people to obtain information, when various terminals carry out man-machine interaction, the intuitive operation is an important way for improving the user experience, the larger screen occupation ratio can bring the scientific and technological sense and the fashion sense to products, and the continuous pursuit of the larger screen occupation ratio is a main trend of the development of communication terminal equipment.
A receiver is an electroacoustic device for converting an audio electric signal into an acoustic signal, and is widely used in communication terminal devices such as mobile phones, fixed phones, and hearing aids. The receiver is a moving coil receiver, and the working principle is as follows: the voice coil is arranged in a magnetic gap of a magnetic circuit of a permanent magnet, and the current flows to generate driving force, so that the vibrating diaphragm is driven to vibrate in a reciprocating manner to radiate sound waves outwards. At present, a sound hole is generally designed right above a diaphragm of a receiver.
Fig. 1 is a schematic diagram of a receiver in a mobile phone according to the prior art. As shown in fig. 1, the front face of the mobile phone shell 2 is provided with a front sound outlet 4 of the mobile phone, and the receiver C1 and the sound outlet of the receiver (corresponding to the front sound outlet 4 of the mobile phone in fig. 1) are both disposed on the front face (i.e. the screen side) of the mobile phone, so that part of the screen 3 is occupied, and the mobile phone cannot really realize the full-screen effect; meanwhile, when the mobile phone is used, the sound leakage is determined by the auricle of a user and the sealing degree of the mobile phone.
In order to pursue a larger screen occupation ratio, in some mobile phones, the sound outlet hole of the receiver is communicated with the front face of the screen through a sound conduit, so that the space of the screen is saved. For example, the sound outlet of the receiver is connected to the earphone outlet, or the receiver is connected to the corner of the screen through a longer pipeline. Such approaches have many limitations. First, the high frequency part suffers a large loss due to the receiver's sounding through a long sound tube. Secondly, because the sound outlet is close to the screen edge, or at the screen side, can't form sealed chamber between user's auricle and the cell-phone when the conversation, compare the scheme that fig. 1 shows, the sound leakage phenomenon is more serious, has reduced the conversation privacy, has influenced user experience, and equally, its sound is revealed the size and is depended on user's auricle and the confined degree of cell-phone.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the receiver outlet occupies the screen space of the mobile phone, so as to provide a receiver, an audio signal processing method, an apparatus, a device and a storage medium.
According to a first aspect, the present invention provides a terminal comprising:
the terminal comprises a terminal body and a terminal body, wherein the terminal body comprises a screen side and a non-screen side, at least two first sound outlet holes are arranged on the non-screen side, and the at least two first sound outlet holes are positioned on different surfaces of the non-screen side;
the microphone comprises at least two microphones, wherein each microphone is respectively provided with a second sound outlet, at least one second sound outlet corresponds to at least one first sound outlet on a first surface in the non-screen side, at least one second sound outlet corresponds to at least one first sound outlet on a second surface in the non-screen side, the second surface is different from the first surface, and the phase of an audio signal in each microphone is different.
With reference to the first aspect, in a first implementation manner of the first aspect, the non-screen side includes a top surface, and the top surface is the first surface.
With reference to the first aspect or the first implementation manner of the first aspect, in a second implementation manner of the first aspect, the non-screen side includes a back side opposite to the screen side, and the back side is the second side.
With reference to the first aspect, in a third implementation manner of the first aspect, the second sound outlet holes are arranged in one-to-one correspondence with the first sound outlet holes.
With reference to the first aspect, in a fourth implementation manner of the first aspect, when the number of the receivers is two, the second sound outlet on one of the receivers corresponds to the first sound outlet on the top surface of the terminal, and the second sound outlet on the other one of the receivers corresponds to the first sound outlet on the back surface of the terminal.
With reference to the first aspect, in a fifth implementation manner of the first aspect, the apparatus further includes a signal source and at least one delay component connected to the signal source;
when the number of the telephone receivers is two, one of the telephone receivers is connected with at least one delay component, and the other telephone receiver is connected with the signal source or the rest delay components;
when the number of the telephone receivers is larger than two, at least one telephone receiver is connected with at least one time delay assembly, except one of the rest telephone receivers which is connected with the signal source, the rest telephone receivers are arranged corresponding to the rest time delay assemblies, or the rest telephone receivers are arranged corresponding to the rest time delay assemblies.
With reference to the fifth implementation manner of the first aspect, in the sixth implementation manner of the first aspect, the signal conditioning component is further included, and the signal conditioning component is disposed between the signal source and the delay component.
With reference to the sixth implementation manner of the first aspect, in the seventh implementation manner of the first aspect, the signal conditioning component includes one or more of the following: high pass filter, band pass filter, low pass filter.
With reference to the first aspect, in an eighth implementation manner of the first aspect, at least one of the second sound outlet holes directly communicates with the corresponding first sound outlet hole.
With reference to the first aspect or the eighth embodiment of the first aspect, in a ninth embodiment of the first aspect, at least one of the second sound outlet holes communicates with the corresponding first sound outlet hole by means of a sound conduit.
With reference to the first aspect, in a second implementation manner of the first aspect, the terminal includes a mobile phone or a sound box.
According to a second aspect, an embodiment of the present invention provides an audio signal processing method, which is applied to a terminal, where the terminal includes N receivers, where N is greater than or equal to 2, and the audio signal processing method includes:
acquiring an initial audio signal;
obtaining N receiver audio signals with different phases by using the initial audio signal;
and sending the receiver audio signals to corresponding receivers, wherein N receiver audio signals with different phases correspond to the N receivers one by one.
With reference to the second aspect, in a first implementation manner of the second aspect, the obtaining N receiver audio signals with different phases by using the initial audio signal includes:
carrying out parallel N time delay treatments on the initial audio signal to obtain N receiver audio signals with different phases;
or, performing parallel N-1 time delay processing on the initial audio signal, and taking the initial audio signal and the initial audio signal after the N-1 time delay processing as N receiver audio signals with different phases.
With reference to the first embodiment of the second aspect, in the second embodiment of the second aspect, performing parallel N or N-1 delay processes on the initial audio information includes:
acquiring preset N or N-1 delay signals;
superimposing the N or N-1 delayed signals on the initial audio signal.
With reference to the second embodiment of the second aspect, in a third embodiment of the second aspect, the N or N-1 delayed signals are obtained by:
acquiring the distance between N or N-1 receivers;
and obtaining the N or N-1 delay signals by using the distance between the N or N-1 receivers and the propagation speed of sound waves in the air.
With reference to the second embodiment of the second aspect, in a fourth embodiment of the second aspect, before performing the delay processing on the initial audio signal, the method further includes: band dividing the initial audio signal;
the delaying the initial audio signal comprises: respectively carrying out time delay processing on the divided audio signals of each frequency band;
after the initial audio signal is delayed, the method further comprises the following steps: and superposing the audio signals of the frequency bands subjected to the time delay processing.
According to a third aspect, an embodiment of the present invention provides an audio signal processing apparatus, which is applied to a terminal, where the terminal includes N receivers, where N is greater than or equal to 2, and includes:
the acquisition module is used for acquiring an initial audio signal;
the processing module is used for obtaining N receiver audio signals with different phases by using the initial audio signal;
and the sending module is used for sending the receiver audio signals to corresponding receivers, wherein N receiver audio signals with different phases correspond to the N receivers one by one.
According to a fourth aspect, the embodiment of the present invention provides an audio signal processing apparatus, which includes a memory and a processor, the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the computer instructions to perform the audio signal processing method according to any one of the second aspect and the second aspect of the present invention.
According to a fifth aspect, the embodiment of the present invention provides a computer-readable storage medium, which stores computer instructions for causing the computer to execute the audio signal processing method according to any one of the second aspect and the second aspect of the present invention.
The technical scheme of the invention has the following advantages:
1. the terminal comprises a terminal body and at least two receivers, wherein the terminal body comprises a screen side and a non-screen side, at least two first sound holes are arranged on the non-screen side, and the at least two first sound holes are positioned on different surfaces of the non-screen side; each telephone receiver is respectively provided with a second sound outlet, at least one second sound outlet corresponds to at least one first sound outlet on a first surface in the non-screen side, at least one second sound outlet corresponds to at least one first sound outlet on a second surface in the non-screen side, and the second surface is different from the first surface. By utilizing the technical scheme, the telephone receivers can be arranged on the non-screen side of the terminal, the telephone receivers cannot occupy the screen space of the terminal, meanwhile, the directivity control of sound wave radiation can be realized by utilizing different phases of audio signals in at least two telephone receivers at the first sound outlet of the terminal, the problem of sound leakage does not exist, the conversation problem of a comprehensive screen terminal is solved, and meanwhile, the manufacturing difficulty of the terminal is not remarkably increased by the scheme; and the electroacoustic conversion efficiency of the terminal in the low frequency band is not influenced by directivity, and the terminal can have higher electroacoustic conversion efficiency.
2. In the terminal (for example, a mobile phone) provided by the present invention, when the number of the receivers is two, the second sound outlet on one of the receivers corresponds to the first sound outlet on the top surface of the terminal, and the second sound outlet on the other receiver corresponds to the first sound outlet on the back surface of the terminal, so that a heart-shaped directivity or a super-heart-shaped directivity can be formed, and the heart-shaped or super-heart-shaped directivity points to the connection line of the two first sound outlets and faces the direction of the auricle, that is, backward sound is directionally eliminated, and energy is concentrated into the auricle.
3. The terminal provided by the invention also comprises a signal source and at least one time delay component connected with the signal source; when the number of the telephone receivers is two, one of the telephone receivers is connected with one of the delay assemblies, and the other telephone receiver is connected with the signal source or the rest delay assemblies; when the number of the telephone receivers is larger than two, at least one telephone receiver is connected with at least one time delay assembly, except one of the rest telephone receivers which is connected with the signal source, the rest telephone receivers are arranged corresponding to the rest time delay assemblies, or the rest telephone receivers are arranged corresponding to the rest time delay assemblies. That is, the phase of the signals in the two receivers is adjusted by using the delay component, so that the directivity control of sound wave radiation can be realized at the first sound outlet of the terminal; meanwhile, the directivity control of at least two receivers is realized by adopting a signal processing mode, and the directivity can be adjusted within a certain range so as to adapt to the influence of different mobile phone IDs and receiver arrangement; if combined with a position sensor, the user's ear position can also be tracked automatically for optimization.
4. In the terminal provided by the invention, when the second sound outlet on the receiver is directly communicated with the first sound outlet on the terminal, the problem of large loss of a high-frequency part caused by adopting the sound conduit for communication can be avoided.
5. The audio signal processing method provided by the embodiment of the invention can process the obtained initial audio signal to obtain N receiver audio signals with different phases, and sends the N receiver audio signals to the corresponding receivers, so that the phases of the audio signals in each receiver of the terminal are different, and the directivity control of sound wave radiation can be realized by using the different phases of the audio signals in at least two receivers at the first sound outlet of the terminal. Meanwhile, the directivity control of at least two receivers is realized by adopting a signal processing mode, and the directivity can be adjusted within a certain range so as to adapt to the influence of different mobile phone IDs and receiver arrangement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a receiver in a mobile phone according to the prior art;
FIG. 2 is an embodiment of a terminal;
FIG. 3 is another embodiment of a terminal;
fig. 4 is a schematic diagram of terminal acoustic directivity;
FIG. 5 is a schematic diagram of a structure between a receiver and a signal source;
FIG. 6 is a schematic diagram of another structure between the receiver and the signal source;
FIG. 7 is a flowchart illustrating an audio signal processing method according to embodiment 2 of the present invention;
fig. 8 is a schematic structural diagram of an audio signal processing apparatus according to embodiment 3 of the present invention;
wherein: 1. a receiver C; 2. a handset housing; 3. a screen; 4. a sound outlet on the front side of the mobile phone; 5. a receiver A; 6. and a receiver B.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment 1 of the invention provides a terminal, which comprises a terminal body and at least two receivers, wherein the terminal body comprises a screen side and a non-screen side, at least two first sound holes are arranged on the non-screen side, and the at least two first sound holes are positioned on different surfaces of the non-screen side; each telephone receiver is respectively provided with a second sound outlet, at least one second sound outlet corresponds to at least one first sound outlet on a first surface in the non-screen side, at least one second sound outlet corresponds to at least one first sound outlet on a second surface in the non-screen side, the second surface is different from the first surface, and the phase of an audio signal in each telephone receiver is different.
As a possible embodiment, the non-screen side includes a top surface and a back surface opposite to the screen side, the top surface being the first surface, the back surface being the second surface.
As a possible implementation manner, the second sound outlet holes are arranged in one-to-one correspondence with the first sound outlet holes. Meanwhile, it can be understood that the receivers are not necessarily close together in the terminal, can be flexibly placed, and the distance between the receivers can be adjusted.
The terminal comprises a terminal body and at least two receivers, wherein the terminal body comprises a screen side and a non-screen side, at least two first sound holes are arranged on the non-screen side, and the at least two first sound holes are positioned on different surfaces of the non-screen side; each telephone receiver is respectively provided with a second sound outlet, at least one second sound outlet corresponds to at least one first sound outlet on a first surface in the non-screen side, at least one second sound outlet corresponds to at least one first sound outlet on a second surface in the non-screen side, and the second surface is different from the first surface. By utilizing the technical scheme, the telephone receivers can be arranged on the non-screen side of the terminal, the telephone receivers cannot occupy the screen space of the terminal, meanwhile, the directivity control of sound wave radiation can be realized by utilizing different phases of signals in at least two telephone receivers at the first sound outlet of the terminal, the problem of sound leakage does not exist, the conversation problem of the comprehensive screen terminal is solved, and meanwhile, the manufacturing difficulty of the terminal is not remarkably increased by the scheme; and the electroacoustic conversion efficiency of the terminal in the low frequency band is not influenced by directivity, and the terminal can have higher electroacoustic conversion efficiency.
As a possible implementation, the number of receivers in the terminal is two. Illustratively, the terminal comprises a terminal body and two receivers, wherein the terminal body comprises a screen side and a non-screen side, first sound holes are respectively arranged on the top surface and the back surface of the terminal (the top surface and the back surface of the terminal are the non-screen side of the terminal), each receiver is respectively provided with a second sound hole, the second sound hole on one receiver corresponds to the first sound hole on the top surface of the terminal, and the second sound hole on the other receiver corresponds to the first sound hole on the back surface of the terminal.
Fig. 2 is a specific embodiment of a terminal, fig. 3 is another specific embodiment of a terminal, and as shown in fig. 2 and fig. 3, the terminal includes a terminal body and two receivers, namely a receiver a5 and a receiver B6, a sound outlet a is disposed on a top surface of the terminal, a sound outlet B is disposed on a back surface of the terminal, the sound outlet on the receiver a5 is disposed corresponding to the sound outlet a on the top surface of the terminal, and the sound outlet on the receiver B6 is disposed corresponding to the sound outlet B on the top surface of the terminal.
As shown in fig. 4, when the second sound outlet on one receiver corresponds to the first sound outlet on the top surface of the terminal (e.g., mobile phone), and the second sound outlet on the other receiver corresponds to the first sound outlet on the back surface of the terminal, a heart-shaped directivity or a super-heart-shaped directivity can be formed, and the heart-shaped directivity or the super-heart-shaped directivity points to the connection line of the two sound outlet areas and faces the direction of the auricle, i.e., the backward sound is directionally eliminated, so that the energy is concentrated into the auricle.
The embodiment of the invention further provides a schematic structural diagram between the telephone receiver and the signal source in the terminal.
As a possible implementation, the system further comprises a signal source and at least one delay component connected with the signal source. When the number of the telephone receivers is two, one of the telephone receivers is connected with at least one delay component, and the other telephone receiver is connected with the signal source or connected with the rest delay components. When the number of the telephone receivers is larger than two, at least one telephone receiver is connected with at least one time delay assembly, except one of the rest telephone receivers which is connected with the signal source, the rest telephone receivers are arranged corresponding to the rest time delay assemblies, or the rest telephone receivers are arranged corresponding to the rest time delay assemblies.
In the embodiment of the present invention, the delay component may select one or more phase adjusting elements, and the phase adjusting elements are used for adjusting the phase of the signal source. The signal source is a downlink voice signal decoded by a baseband and is a conventional signal source in the mobile phone.
As a further implementation manner, the terminal further includes a signal conversion component, where the signal conversion component is disposed between the receiver connected to the signal source and the signal source, and/or the signal conversion component is disposed between the receiver connected to the delay component and the delay component. Specifically, the signal conversion assembly includes one or both of the following: D/A converter, power amplifier (power amplifier for short). As shown in fig. 5, the D/a converter a and the power amplifier a are disposed between the delay assembly and the receiver a, and the D/a converter B and the power amplifier B are disposed between the signal source and the receiver B.
As a further implementation, the terminal further includes a signal conditioning component, and the signal conditioning component is disposed between the signal source and the delay component. Specifically, the signal conditioning components include one or more of the following: high pass filter, band pass filter, low pass filter. As shown in fig. 6, a high-pass filter is provided between the signal source and the phase adjusting element a1, a band-pass filter is provided between the signal source and the phase adjusting element a2, and a low-pass filter is provided between the signal source and the phase adjusting element A3. It should be noted that fig. 6 only shows a specific example, and in fact, the delay assembly described above may only include any one or two of the phase adjusting element a1, the phase adjusting element a2 and the phase adjusting element A3, and the corresponding filter may also be one or two, and the filter may be connected to any one of the phase adjusting elements, either a high-pass filter is connected to the phase adjusting element a1 as shown in fig. 6, or a low-pass filter is connected to the phase adjusting element a 1. In the receiver B, as shown in fig. 6, a filter may be provided in front of the phase adjusting element, or a filter may not be provided in front of the phase adjusting element.
It is understood that as shown in fig. 6, a high pass filter is provided between the signal source and the phase adjusting element a1, a band pass filter is provided between the signal source and the phase adjusting element a2, and a low pass filter is provided between the signal source and the phase adjusting element A3; it is essential to adjust the directivity by dividing the frequency band, because the directional width of different frequency bands will be different. In fig. 6, a signal source first passes through two sets of filters, each set is divided into several frequency bands, then each frequency band of each set is adjusted in delay/phase and gain, and finally the frequency bands are superposed and fed to a receiver through a power amplifier. Therefore, the directivity of the frequency division band can be adjusted within a certain range to adapt to different mobile phone IDs and receiver arrangement influences; if combined with a position sensor, the user's ear position can also be tracked automatically for optimization.
As a further embodiment, the terminal further includes an amplitude adjustment element for adjusting the amplitude of the audio signal, and the position of the amplitude adjustment element is not limited in the present invention, and may be located in front of the phase adjustment element or behind the phase adjustment element.
In the terminal provided in the embodiment of the present invention, the second sound outlet on the receiver may be directly connected to the first sound outlet on the terminal or may be connected to the first sound outlet on the terminal by using a sound conduit.
Example 2
s701: an initial audio signal is acquired.
In the embodiment of the invention, the initial audio signal is obtained from the signal source, wherein the signal source is a downlink voice signal decoded by a baseband and is a conventional signal source in a mobile phone.
S702: and obtaining N receiver audio signals with different phases by using the initial audio signal.
As a specific implementation manner, the following technical solution may be adopted to obtain N receiver audio signals with different phases by using the initial audio signal: carrying out parallel N time delay treatments on the initial audio signal to obtain N receiver audio signals with different phases; or, performing parallel N-1 time delay processing on the initial audio signal, and taking the initial audio signal and the initial audio signal after the N-1 time delay processing as N receiver audio signals with different phases.
Specifically, the following technical scheme may be adopted for performing parallel N or N-1 delay processing on the initial audio information: acquiring preset N or N-1 delay signals; superimposing the N or N-1 delayed signals on the initial audio signal.
More specifically, the N or N-1 delay signals are obtained by: acquiring the distance between N or N-1 receivers; and obtaining the N or N-1 delay signals by using the distance between the N or N-1 receivers and the propagation speed of sound waves in the air.
For example, assuming that the linear distance between any two first sound outlets on the non-screen side of the terminal is l, a delay τ with respect to receiver B may be superimposed by the signal fed to receiver a, such that τ is l/c0Wherein c is0Representing the speed of sound propagation in air. Directivity directed in the direction of the human ear can be generated.
As a further embodiment, before performing the delay processing on the initial audio signal, further performing frequency band division on the initial audio signal; the delaying the initial audio signal comprises: respectively carrying out time delay processing on the divided audio signals of each frequency band; after the initial audio signal is delayed, the method further comprises the following steps: and superposing the audio signals of the frequency bands subjected to the time delay processing. Therefore, the directivity of the frequency division band can be adjusted within a certain range to adapt to different mobile phone IDs and receiver arrangement influences; if combined with a position sensor, the user's ear position can also be tracked automatically for optimization.
S703: and sending the receiver audio signals to corresponding receivers, wherein N receiver audio signals with different phases correspond to the N receivers one by one.
The audio signal processing method provided in embodiment 2 of the present invention can process the obtained initial audio signal to obtain N receiver audio signals with different phases, and send the N receiver audio signals to corresponding receivers, so that the phases of the audio signals in each receiver of the terminal are different, and thus, directivity control of sound wave radiation can be achieved at the first sound outlet of the terminal by using the different phases of the audio signals in at least two receivers. Meanwhile, the directivity control of at least two receivers is realized by adopting a signal processing mode, and the directivity can be adjusted within a certain range so as to adapt to the influence of different mobile phone IDs and receiver arrangement.
Example 3
Specifically, the obtaining module 80 is configured to obtain an audio signal.
And the processing module 82 is configured to process the audio signals to obtain N audio signals with different phases.
The sending module 84 sends the processed audio signals to corresponding receivers, where the N audio signals with different phases correspond to the N receivers one to one.
The details of the audio signal processing apparatus can be understood by referring to the relevant description and effects corresponding to embodiment 1 of the present invention, and are not described herein again.
Example 4
Embodiments of the present invention also provide an audio signal processing apparatus, which may include a processor and a memory, where the processor and the memory may be connected by a bus or in another manner.
The processor may be a Central Processing Unit (CPU). The Processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or a combination thereof.
The memory, which is a non-transitory computer-readable storage medium, may be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules (e.g., the acquisition module 80, the processing module 82, and the sending module 84 shown in fig. 8) corresponding to the audio signal processing method in the embodiment of the present invention. The processor executes various functional applications and data processing of the processor by executing the non-transitory software programs, instructions and modules stored in the memory, that is, the audio signal processing method in the above method embodiment is realized.
The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor, and the like. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory located remotely from the processor, and such remote memory may be coupled to the processor via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory and, when executed by the processor, perform the audio signal processing method shown in embodiment 1 of the present invention.
The details of the audio signal processing apparatus may be understood by referring to the relevant description and effects corresponding to embodiment 1 of the present invention, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD) or a Solid State Drive (SSD), etc.; the storage medium may also comprise a combination of memories of the kind described above.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (19)
1. A terminal, comprising:
the terminal comprises a terminal body and a terminal body, wherein the terminal body comprises a screen side and a non-screen side, at least two first sound outlet holes are arranged on the non-screen side, and the at least two first sound outlet holes are positioned on different surfaces of the non-screen side;
the microphone comprises at least two microphones, wherein each microphone is respectively provided with a second sound outlet, at least one second sound outlet corresponds to at least one first sound outlet on a first surface in the non-screen side, at least one second sound outlet corresponds to at least one first sound outlet on a second surface in the non-screen side, the second surface is different from the first surface, and the phase of an audio signal in each microphone is different.
2. The terminal of claim 1, wherein the non-screen side comprises a top surface, the top surface being the first side.
3. A terminal according to claim 1 or 2, wherein the non-screen side comprises a back side opposite the screen side, the back side being the second side.
4. The terminal of claim 1, wherein the second sound outlet holes are arranged in one-to-one correspondence with the first sound outlet holes.
5. The terminal of claim 1, wherein when the number of the receivers is two, the second sound outlet of one of the receivers corresponds to the first sound outlet on the top surface of the terminal, and the second sound outlet of the other of the receivers corresponds to the first sound outlet on the back surface of the terminal.
6. The terminal of claim 1, further comprising a signal source and at least one delay element coupled to the signal source;
when the number of the telephone receivers is two, one of the telephone receivers is connected with at least one delay component, and the other telephone receiver is connected with the signal source or the rest delay components;
when the number of the telephone receivers is larger than two, at least one telephone receiver is connected with at least one time delay assembly, except one of the rest telephone receivers which is connected with the signal source, the rest telephone receivers are arranged corresponding to the rest time delay assemblies, or the rest telephone receivers are arranged corresponding to the rest time delay assemblies.
7. The terminal of claim 6, further comprising a signal conditioning component disposed between the signal source and the delay component.
8. The terminal of claim 7, wherein the signal conditioning components comprise one or more of: high pass filter, band pass filter, low pass filter.
9. A terminal as claimed in claim 1, wherein at least one of the second sound outlet apertures is in direct communication with the corresponding first sound outlet aperture.
10. A terminal according to claim 1 or 9, wherein at least one of the second sound outlet apertures communicates with the corresponding first sound outlet aperture by means of a sound conduit.
11. The terminal of claim 1, wherein the terminal comprises a cell phone or a speaker.
12. An audio signal processing method is applied to a terminal, wherein the terminal comprises N receivers, N is more than or equal to 2, and the method comprises the following steps:
acquiring an initial audio signal;
obtaining N receiver audio signals with different phases by using the initial audio signal;
and sending the N receiver audio signals to corresponding receivers, wherein the N receiver audio signals with different phases correspond to the N receivers one by one.
13. The audio signal processing method of claim 12, wherein the obtaining N receiver audio signals with different phases by using the initial audio signal comprises:
carrying out parallel N time delay treatments on the initial audio signal to obtain N receiver audio signals with different phases;
or, performing parallel N-1 time delay processing on the initial audio signal, and taking the initial audio signal and the initial audio signal after the N-1 time delay processing as N receiver audio signals with different phases.
14. The audio signal processing method of claim 13, wherein performing N or N-1 parallel delay processing on the initial audio information comprises:
acquiring preset N or N-1 delay signals;
superimposing the N or N-1 delayed signals on the initial audio signal.
15. The audio signal processing method of claim 14, wherein the N or N-1 delayed signals are obtained by:
acquiring the distance between N or N-1 receivers;
and obtaining the N or N-1 delay signals by using the distance between the N or N-1 receivers and the propagation speed of sound waves in the air.
16. The audio signal processing method of claim 14, further comprising, before the delaying the initial audio signal: band dividing the initial audio signal;
the delaying the initial audio signal comprises: respectively carrying out time delay processing on the divided audio signals of each frequency band;
after the initial audio signal is delayed, the method further comprises the following steps: and superposing the audio signals of the frequency bands subjected to the time delay processing.
17. An audio signal processing device is applied to a terminal, wherein the terminal comprises N receivers, N is more than or equal to 2, and the audio signal processing device is characterized by comprising:
the acquisition module is used for acquiring an initial audio signal;
the processing module is used for obtaining N receiver audio signals with different phases by using the initial audio signal;
and the sending module is used for sending the receiver audio signals to corresponding receivers, wherein N receiver audio signals with different phases correspond to the N receivers one by one.
18. An audio signal processing apparatus characterized by comprising:
a memory and a processor, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the audio signal processing method of any one of claims 12 to 16.
19. A computer-readable storage medium storing computer instructions for causing a computer to execute the audio signal processing method according to any one of claims 12 to 16.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111988458A (en) * | 2020-08-21 | 2020-11-24 | Oppo广东移动通信有限公司 | Call privacy protection method, terminal device and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111988458A (en) * | 2020-08-21 | 2020-11-24 | Oppo广东移动通信有限公司 | Call privacy protection method, terminal device and storage medium |
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