CN114422933B - Electronic equipment, sound field processing method thereof and sound field processing equipment - Google Patents
Electronic equipment, sound field processing method thereof and sound field processing equipment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/01—Enhancing the perception of the sound image or of the spatial distribution using head related transfer functions [HRTF's] or equivalents thereof, e.g. interaural time difference [ITD] or interaural level difference [ILD]
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Abstract
The disclosure provides a sound field processing method of electronic equipment, sound field processing equipment and electronic equipment. The processing method comprises the following steps: the left speaker plays sound, the left microphone receives sound and forms a left speaker main test signal M L, the right microphone receives sound and forms a left speaker auxiliary test signal C L, and the left sound conduction coefficient G LR of the left speaker at the right microphone is C L/ML; the right speaker plays sound, the right microphone receives sound and forms a right speaker main test signal M R, the left microphone receives sound and forms a right speaker sub-test signal C R, and the right sound conduction coefficient G RL of the right speaker at the left microphone is C R/MR; obtaining a right offset signal according to a left sound signal of a left loudspeaker and a left sound conduction coefficient G LR, and superposing the right offset signal on the right sound signal of a right loudspeaker to obtain a right output signal; and obtaining a left offset signal according to the right sound signal and the right sound conduction coefficient of the right loudspeaker, and superposing the left offset signal on the left sound signal of the left loudspeaker to obtain a left output signal.
Description
Technical Field
The embodiment of the disclosure relates to the technical field of sound field processing, and more particularly relates to a sound field processing method of electronic equipment, the electronic equipment and the sound field processing equipment.
Background
In recent years, electronic devices are rapidly developed, and products such as VR headset, AR glasses, smart glasses, and shoulder speakers are favored by consumers. These electronic devices are typically capable of providing a user with a use experience in both visual and audible terms.
The human ear typically localizes the sound source position by the time difference and intensity difference of sound reaching the left and right ears. The electronic equipment can provide stereo effect for users through the characteristics of different sound intensity, sounding time and the like by utilizing the characteristics of human ears. However, taking VR headset and shoulder strap speakers as examples, sound is played out to the space around the user. This allows the user to receive sound from different speakers at both ears, the difference between these sounds being weakened. The difference in auditory sensation is not apparent from the user's perspective.
Therefore, there is a need for an improved electronic device that increases the stereo effect.
Disclosure of Invention
An object of the present disclosure is to provide a sound field processing method of an electronic apparatus, and a new technical solution of the sound field processing apparatus.
According to one aspect of the present disclosure, there is disclosed a sound field processing method of an electronic apparatus, including:
The left speaker plays sound, the left microphone receives sound and forms a left speaker main test signal M L, the right microphone receives sound and forms a left speaker auxiliary test signal C L, and the left sound conduction coefficient G LR of the left speaker at the right microphone is C L/ML;
The right speaker plays sound, the right microphone receives sound and forms a right speaker main test signal M R, the left microphone receives sound and forms a right speaker sub-test signal C R, and the right sound conduction coefficient G RL of the right speaker at the left microphone is C R/MR;
Obtaining a right offset signal O R according to a left sound signal SL and a left sound conduction coefficient G LR of a left loudspeaker, and superposing a right offset signal O R on a right sound signal SR of the right loudspeaker to obtain a right Output signal Output R;
The left cancel signal O L is obtained from the right sound signal SR and the right sound conduction coefficient G RL of the right speaker, and the left cancel signal O L is superimposed on the left sound signal SL of the left speaker, to obtain the left Output signal Output L.
Optionally, the right cancellation signal O R is a product of the left sound signal SL and the left sound conduction coefficient G LR;
The left cancellation signal O L is the product of the right sound signal SR and the right sound conduction coefficient G RL.
Optionally, the right cancellation signal O R and the left sound signal SL are opposite signals;
and/or, the left cancellation signal O L and the right sound signal SR are opposite signals.
Optionally, when the left speaker plays sound, detecting a left main sound receiving time T LL of the left microphone, detecting a right auxiliary sound receiving time T LR of the right microphone, and obtaining a right sound receiving time delay T R;
when the right loudspeaker plays sound, detecting a right main sound receiving time T RR of the right microphone, detecting a left auxiliary sound receiving time T RL of the left microphone, and acquiring a left sound receiving time delay T L;
Superposing right sound receiving delay T R on the right offset signal O R;
And superposing a left sound receiving delay T L on the left canceling signal O L.
Optionally, the right sound receiving delay T R is a difference value between the right side auxiliary sound receiving time T LR and the left side main sound receiving time T LL;
the left sound receiving delay T L is the difference value between the left side auxiliary sound receiving time T RL and the right side main sound receiving time T RR.
According to a second aspect of the present invention, there is provided an electronic device comprising:
The left sound channel processing module is used for superposing a left offset signal O L on a left sound signal SL of the left speaker and outputting an obtained left Output signal Output L to the left speaker;
The right sound channel processing module is used for superposing a right offset signal O R on a right sound signal SR of the right speaker and outputting an obtained right Output signal Output R to the right speaker;
Left and right microphones for receiving sound;
The electronic device is configured to perform the above-described sound field processing method.
Optionally, the electronic device is configured to be worn on a user's head, the electronic device having a left and a right fixed portion, the left speaker and the left microphone being disposed proximate to the left fixed portion, the right speaker and the right microphone being disposed proximate to the right fixed portion.
Optionally, the right channel processing module includes a right channel delay module, where the right channel delay module is configured to delay the right cancellation signal O R;
The left channel processing module comprises a left channel delay module, and the left channel delay module is used for carrying out delay processing on a left offset signal O L.
Optionally, the left microphone and/or right microphone are used for voice pickup.
According to a third aspect of the present disclosure, there is also provided a sound field processing apparatus including:
A memory for storing an executable computer program;
a left speaker, a right speaker, a left microphone, and a right microphone;
A processor for executing the method as described above according to the computer program.
The sound field processing method has the advantages that the sound transmitted to the position of the opposite side can be offset by the left and right speakers, and the difference of the sound of the two speakers is increased on the hearing of a user.
Other features of the present specification and its advantages will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and together with the description, serve to explain the principles of the specification.
Fig. 1 is a schematic diagram of steps of a sound field processing method provided in the present embodiment;
fig. 2 is a schematic diagram of a sound field processing module in the electronic device according to the present embodiment.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
The present disclosure provides a sound field processing method for an electronic device, which may be VR headset, AR glasses, shoulder speakers, etc. For electronic equipment which is worn on the head of a user or on the body of the user and can emit sound, the technical scheme provided by the disclosure can provide optimization treatment for the sound field of the electronic equipment, and the difference of the sound played by the left sound emitting device and the right sound emitting device reaching the ears of a person is enhanced. By increasing the difference of the playing sounds of the left sound producing device and the right sound producing device, the sound field can be increased in sense, and a stereo effect is better provided for a user.
The electronic device corresponding to the sound field processing method disclosed by the disclosure is provided with a left loudspeaker, a right loudspeaker, a left microphone and a right microphone.
< Method example >
The sound field processing method includes the following steps. First, the conductance of the loudspeakers on the different sides to the other side can be measured in order to compensate the acoustic signal in practical applications.
The left sound conduction coefficient G LR of the left speaker to the right microphone was tested. And enabling a left loudspeaker of the electronic equipment to play sound, and respectively receiving the sound played by the left loudspeaker by utilizing the left microphone and the right microphone.
The left microphone is relatively close to the left speaker, receives sound and is capable of forming a left speaker main test signal M L that represents the sound state of sound generated from the left speaker as it propagates to the left microphone that is closer to it.
The right microphone is relatively far from the left speaker, which may be spaced from the left speaker by other obstructions. For example, a user may have a head block between the left speaker and the right microphone while wearing the VR headset. The right microphone receives the sound of the left speaker and is able to form a left speaker sub-test signal C L that represents the sound state when the sound generated from the left speaker propagates to the far right microphone.
According to the test signals, the left sound conduction coefficient G LR of the left speaker at the right microphone is obtained, and the left sound conduction coefficient G LR is C L/ML, namely the ratio of the auxiliary test signals of the left speaker to the main test signals of the left speaker. The left sound conduction coefficient G LR represents the attenuation, deformation ratio of the sound conducted to the right speaker by the left speaker with respect to the sound conducted to the left speaker. The sound condition of the left speaker when it propagates to the right can be judged by the left sound conduction coefficient G LR.
The right sound conduction coefficient G RL of the right speaker to the left microphone was tested. And enabling a right loudspeaker of the electronic equipment to play sound, and respectively receiving the sound played by the right loudspeaker by utilizing the right microphone and the left microphone.
The right microphone is relatively closer to the right speaker, which receives sound and is capable of forming a right speaker main test signal M R that represents the sound state of sound generated from the right speaker as it propagates to the right microphone that is closer to it.
The left microphone is relatively far from the right speaker, and the received sound represents the sound state reflected when the sound played by the right speaker is conducted to the left. The left microphone receives the sound of the right speaker and can form the right speaker sub-test signal C R. The signal contains attenuation and deformation information after the sound is transmitted from the right side to the left side.
According to the above test signals, the right sound conduction coefficient G RL of the right speaker at the left microphone can be obtained, and the right sound conduction coefficient G RL is C R/MR, i.e., the ratio of the right speaker sub-test signal to the right speaker main test signal. The right sound conduction coefficient G RL represents the attenuation and deformation ratio of the sound conducted to the left speaker by the right speaker with respect to the sound conducted to the right speaker. The sound condition of the right speaker when it propagates to the left can be judged by the right sound conduction coefficient G RL.
The technical scheme provided by the disclosure includes that the left sound conduction coefficient G LR and the right sound conduction coefficient G RL are tested to obtain coefficients in the current application state. Each time the electronic device is actually applied, for example, different users wear the electronic device to form different sound wave blocking effects, and the user wears or places the electronic device at different positions, which can cause the application environment to change. Accordingly, the left sound conduction coefficient G LR and the right sound conduction coefficient G RL also change with changes in the actual application environment. Therefore, the technical scheme disclosed by the disclosure can test the conduction coefficient each time under the condition of starting the sound field enhancement function.
In practice, the left and right speakers will be output formal sound signals to form sound waves. The sound signal for output to the left speaker is the left sound signal SL, and the sound signal for output to the right speaker is the right sound signal SR.
Further, a right cancel signal O R for superposition on the right sound signal SR may be obtained from the left sound signal SL of the left speaker and the left sound conduction coefficient G LR. The left sound signal SL is processed by the left sound conduction coefficient G LR to form a signal corresponding to the sound transmitted to the right microphone, and the signal is used as a cancellation signal to make the right speaker emit a specific sound to cancel the sound transmitted from the left side. Thus, the signal output to the right speaker includes the right sound signal SR for generating the right sound and the right canceling signal O R for canceling the sound transmitted from the left speaker. I.e. the Output signal right Output R. The sound emitted for the right speaker can be canceled out against the sound transmitted from the left speaker. The design mode can reduce the sound of the left loudspeaker heard by the user on one side of the right ear, so that the difference of the sound of the two sides of the loudspeaker ear is increased, the stereo effect is improved, and the sound field is increased.
Accordingly, a left cancellation signal O R may be obtained from the right sound signal SR of the right speaker and the right sound conduction coefficient G RL, the left cancellation signal O L being for being superimposed on the left sound signal SL. The right sound signal SR is processed by the right sound conduction coefficient G RL to form a signal corresponding to the sound transmitted to the left microphone, and the signal is used as a cancellation signal to make the left speaker emit a specific sound to cancel the sound transmitted from the right side. Thus, the signal output to the left speaker includes a left sound signal SL for generating left-side sound, and a left cancellation signal O L for canceling sound from the right speaker. That is, the Output signal is the left Output signal Output L. The sound emitted from the left speaker can be canceled out by the sound transmitted from the right speaker to the left.
According to the technical scheme, through testing in practical application, the left sound conduction coefficient G LR and the right sound conduction coefficient G RL are obtained, so that the speakers on the left side and the right side can emit sounds for canceling the speakers on the other side, which are transmitted to the speaker on the other side. Thus, the crosstalk between the left and right speakers in the sound playing function can be effectively reduced, the expansion effect of the acoustic field can be realized, and the enhanced stereophonic effect can be provided.
Optionally, the right cancellation signal O R is a product of the left sound signal SL and the left sound conduction coefficient G LR, and the left cancellation signal O L is a product of the right sound signal SR and the right sound conduction coefficient G RL. In this alternative embodiment, because the left sound conduction coefficient G LR represents the ratio of the sound of the left speaker to the right microphone and the left microphone, the coefficient reflects the intensity characteristics of the sound. Therefore, the intensity of the sound received by the right microphone can be obtained by multiplying the left sound signal SL by the left sound conduction coefficient G LR. Thus, the sound signal can cancel sound transmitted to the right side from the left speaker with high intensity by using the sound signal as the right canceling signal O R. The same principle applies to the left cancellation signal O L, which is also obtained by multiplying the right sound signal SR by the right sound conduction coefficient G RL.
In other embodiments, the right cancellation signal O R may also be obtained by combining the left sound signal SL with the left sound conduction coefficient G LR and other attenuation coefficients.
Optionally, the right cancellation signal O R and the left sound signal SL are opposite signals. Optionally, the left cancellation signal O L and the right sound signal SR are opposite signals.
In order to improve the canceling effect of the right speaker on the sound generated by the left speaker according to the sound generated by the right canceling signal O R, the right canceling signal O R may be configured as an inverted signal 180 ° out of phase with the phase of the left sound signal SL. In this way, the sound generated by the right speaker according to the right cancellation signal O R has the same vibration frequency and amplitude as the signal generated by the left speaker, but the vibration phases are opposite, and the sounds are more likely to cancel each other after being propagated through the air vibration. Accordingly, the left cancellation signal O L and the right sound signal SR may be inverted signals.
The technical scheme does not limit that the cancellation signal and the sound signal at the other side are opposite signals, and the phase difference of the two signals can be smaller than 180 degrees, so that the cancellation effect can be achieved. Because of different practical application conditions, signal matching forms with 90 degrees, 120 degrees, 60 degrees and the like of phase difference can also be adopted. For example, in the case where the shade between the left and right sides is irregular, there are clothing, metal accessories, and the like in addition to the wearer's head, different signal phase differences may be employed. In a preferred embodiment, if the shape of the shielding object is regular and no shielding object made of other metal materials exists, the technical scheme can adopt a cancellation signal and a sound signal with the phase difference of 180 degrees through testing the transmission coefficient.
In practical applications, since the distance between the left speaker and the right microphone is greater than the distance between the left speaker and the left microphone, there is a time difference when sound generated by the left speaker propagates to the right microphone and the left microphone. Such a time difference may cause that the sound generated according to the cancellation signal cannot accurately cancel the sound transmitted from the other side.
The technical scheme also provides an improved method for coping with the time difference.
Optionally, when the left speaker main test signal M L and the left speaker sub test signal C L are acquired, the time period when the left microphone receives the sound of the left speaker is measured, and the time period is the left main sound receiving time period T LL. At this stage, the time period for which the right microphone receives the sound of the left speaker is measured as the right sub-sound receiving time period T LR. And calculating and obtaining right sound receiving delay T R according to the left main sound receiving time T LL and the right auxiliary sound receiving time T LR.
The same principle is optionally used to determine when the right microphone receives the sound of the right speaker when the main test signal M R of the right speaker and the sub-test signal C R of the right speaker are acquired, where the time duration is the main right sound receiving time T RR. Similarly, the time period for which the left microphone receives the sound of the right speaker is measured as the left sub-sound receiving time period T RL. And calculating and acquiring left sound receiving delay T L according to the right main sound receiving time T RR and the left auxiliary sound receiving time T RL.
When the sound field is adjusted, the right sound receiving delay T R may be superimposed on the right canceling signal O R. In this way, the right speaker emits sound for canceling the sound transmitted from the other side with respect to the sound emitted by itself according to the right sound signal SR for a time just equivalent to the time when the sound emitted by the other speaker is transmitted to the right side. The sound emitted by the right speaker for cancellation and the cancelled sound are intersected near the right microphone substantially simultaneously, so that a better cancellation effect can be achieved.
The same principle can superimpose a left-hand sound delay T L on the left cancellation signal O L. In this way, the sound emitted by the left speaker for cancellation is made to approach the sound of the other side speaker to the left side, improving the cancellation effect.
Optionally, the right sound receiving delay T R is a difference value between the right side auxiliary sound receiving time T LR and the left side main sound receiving time T LL. Optionally, the left sound receiving delay T L is a difference value between the left side auxiliary sound receiving time T RL and the right side main sound receiving time T RR.
This alternative directly uses the time of sound delivery to the opposite microphone minus the time of sound delivery to the present side microphone to obtain the time duration of the opposite sound receiving delay. The method has simple arithmetic logic and can clearly lead the canceling sound and the sound needing to be canceled to arrive at the corresponding position at the same time. Under the condition that no special shielding and sound absorbing materials exist in the practical application environment, the right sound receiving delay and the left sound receiving delay are preferably obtained by adopting the mode.
< Device example >
The present disclosure also provides an electronic device comprising a left channel processing module 12 and a left speaker 11, and a right channel processing module 22 and a right speaker 21, as shown in fig. 2.
The left channel processing module 12 is configured to superimpose a left cancellation signal O L on the left sound signal SL of the left speaker 11, and Output an obtained left Output signal Output L to the left speaker 11.
The right channel processing module 22 is configured to superimpose the right cancellation signal O R on the right sound signal SR of the right speaker 21, and Output the obtained right Output signal Output R to the right speaker 21.
The electronic device further includes a left microphone and a right microphone for receiving sound, respectively. In the test of the left sound conduction coefficient G LR and the right sound conduction coefficient G RL, the left microphone and the right microphone play a role of assisting the test. Alternatively, the left and right microphones may also be used as voice pickup devices, call devices, etc. of the electronic device.
The electronic device is used for executing the sound field processing method.
As shown in fig. 2, the channels of the left speaker 11 combine the left sound signal SL and the left cancel signal O L. The left cancellation signal O L comes from the processing of the left channel processing block 12. The left channel processing module 12 may store a right sound conduction coefficient G RL, and the left channel processing module 12 receives the right sound signal SR and calculates and obtains a left cancellation signal O L according to the right sound signal SR and the right sound conduction coefficient G RL.
Alternatively, the left channel processing module 12 may be provided with an inverting filter, and the left cancellation signal O L is processed by the inverting filter to form a signal that is inverted from the original right sound signal SR. This design is more advantageous for the left cancellation signal O L to cancel the sound transmitted from the right speaker 21.
Optionally, the left channel processing module 12 further includes a left channel delay module 13, as shown in fig. 2, where the left channel delay module 13 adds a delay to the left cancellation signal O L, and the delayed left cancellation signal O L causes the left speaker 11 to generate a delay for canceling sound, so that the delay can better cancel sound transmitted from the right side.
As shown in fig. 2, the left cancellation signal O L is combined into the left channel, superimposed on the left sound signal SL, and output to the left speaker 11 via the processing of the left channel processing block 12 and its inverse filter 4 and the left channel delay block 13.
Similarly, as shown in fig. 2, the channels of the right speaker 21 combine the right sound signal SR and the right cancellation signal O R. The right cancellation signal O R comes from the processing of the right channel processing module 22. The left sound conduction coefficient G LR may be stored in the right channel processing module 22, and the right channel processing module 22 receives the left sound signal SL and obtains the right cancellation signal O R according to the left sound signal SL and the left sound conduction coefficient G LR.
Alternatively, an inverting filter may be disposed in the right channel processing module 22, where the right cancellation signal O R is processed by the inverting filter to form a signal that is inverted from the original left sound signal SL. This design is more advantageous for the right cancellation signal O R to cancel the sound transmitted from the left speaker 11.
Optionally, the right channel processing module 22 further includes a right channel delay module 23, as shown in fig. 2, where the right channel delay module 23 adds a delay to the right cancellation signal O R, and the delayed right cancellation signal O R causes the right speaker 21 to delay the generation of the cancellation sound, so that the cancellation sound can be better cancelled with the sound transmitted from the left side.
As shown in fig. 2, the right cancellation signal O R is combined into the right channel, superimposed on the right sound signal SR, and output to the right speaker 21 via the processing of the right channel processing module 22 and its inverse filter 4 and right channel delay module 23.
The present solution provides a preferably realistic output signal:
The right Output signal Output R is preferably: SR-O R＝SR+(-180degree)*(SL*GLR);
The left Output signal Output L is preferably: SL-O L＝SL+(-180degree)*(SR*GRL).
Wherein G LR＝CL/ML,GRL＝CR/MR.
In practical applications, after a user wears an electronic device, for example, VR headset, the user may obtain G LR and G RL through a test procedure. Further, the user formally uses the VR head-mounted display device, the sound of the speakers at the left side and the right side can be combined with the compensation function of the left channel processing module and the right channel processing module, the sound field effect is effectively enhanced, and the mutual crosstalk and the sound image positioning interference between the speakers at the two sides are eliminated. Thereby enhancing the hearing sound field, being beneficial to the sound field information positioning and improving the stereo effect.
< Hardware configuration >
The present disclosure also provides a sound field processing device, which may be, but is not limited to, an intelligent VR headset, intelligent AR glasses, a shoulder box, a bluetooth headset, a smart phone, a portable computer, a desktop computer, a tablet computer, and the like.
The sound field processing apparatus may include, but is not limited to, a processor, a memory, an interface device, a communication device, a display device, an input device, a speaker, a microphone, and the like. The processor may be a central processing unit CPU, a graphics processor GPU, a microprocessor MCU, or the like, for executing a computer program, which may be written in an instruction set of an architecture such as x86, arm, RISC, MIPS, SSE, or the like. The memory includes, for example, ROM (read only memory), RAM (random access memory), nonvolatile memory such as a hard disk, and the like. The interface means include, for example, a USB interface, a serial interface, a parallel interface, etc. The communication means can be wired communication using an optical fiber or cable, or wireless communication, for example, and specifically may include WiFi communication, bluetooth communication, 2G/3G/4G/5G communication, and the like. The display device is, for example, a liquid crystal display, a touch display, or the like. The input device may include, for example, a touch screen, a keyboard, a somatosensory input, and the like. The speaker is used for outputting audio signals. The microphone is used for collecting audio signals.
The memory of the sound field processing apparatus is used for storing a computer program for controlling the processor to operate to implement the method according to the embodiments of the present disclosure. The skilled person can design the computer program according to the disclosure of the present disclosure. How the computer program controls the processor to operate is well known in the art and will not be described in detail here. The sound field processing device may be installed with an intelligent operating system (e.g., windows, linux, android, IOS, etc. systems) and application software.
The embodiments of the present specification have been described above, and the above description is illustrative, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvement in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the application is defined by the appended claims.
Claims (9)
1. A sound field processing method of an electronic device, characterized by comprising:
The left speaker plays sound, the left microphone receives sound and forms a left speaker main test signal M L, the right microphone receives sound and forms a left speaker auxiliary test signal C L, and the left sound conduction coefficient G LR of the left speaker at the right microphone is C L/ML;
The right speaker plays sound, the right microphone receives sound and forms a right speaker main test signal M R, the left microphone receives sound and forms a right speaker sub-test signal C R, and the right sound conduction coefficient G RL of the right speaker at the left microphone is C R/MR;
Obtaining a right offset signal O R according to a left sound signal SL and a left sound conduction coefficient G LR of a left loudspeaker, and superposing a right offset signal O R on a right sound signal SR of the right loudspeaker to obtain a right Output signal Output R;
Obtaining a left offset signal O L according to a right sound signal SR and a right sound conduction coefficient G RL of a right loudspeaker, and superposing a left offset signal O L on a left sound signal SL of the left loudspeaker to obtain a left Output signal Output L;
The right cancellation signal O R is the product of the left sound signal SL and the left sound conduction coefficient G LR;
The left cancellation signal O L is the product of the right sound signal SR and the right sound conduction coefficient G RL.
2. The sound field processing method according to claim 1, wherein the right cancel signal O R and the left sound signal SL are opposite signals;
and/or, the left cancellation signal O L and the right sound signal SR are opposite signals.
3. The sound field processing method according to claim 1, characterized by comprising:
when the left loudspeaker plays sound, detecting left main sound receiving time T LL of the left microphone, detecting right auxiliary sound receiving time T LR of the right microphone, and acquiring right sound receiving time delay T R;
when the right loudspeaker plays sound, detecting a right main sound receiving time T RR of the right microphone, detecting a left auxiliary sound receiving time T RL of the left microphone, and acquiring a left sound receiving time delay T L;
Superposing right sound receiving delay T R on the right offset signal O R;
And superposing a left sound receiving delay T L on the left canceling signal O L.
4. A sound field processing method according to claim 3, wherein the right sound receiving delay T R is a difference between a right side sub sound receiving time T LR and a left side main sound receiving time T LL;
the left sound receiving delay T L is the difference value between the left side auxiliary sound receiving time T RL and the right side main sound receiving time T RR.
5. An electronic device, comprising:
The left sound channel processing module is used for superposing a left offset signal O L on a left sound signal SL of the left speaker and outputting an obtained left Output signal Output L to the left speaker;
The right sound channel processing module is used for superposing a right offset signal O R on a right sound signal SR of the right speaker and outputting an obtained right Output signal Output R to the right speaker;
Left and right microphones for receiving sound;
The electronic device is configured to perform the sound field processing method of any one of claims 1 to 4.
6. The electronic device of claim 5, wherein the electronic device is configured for wearing on a user's head, the electronic device having a left fixation and a right fixation, the left speaker and left microphone being disposed proximate the left fixation, the right speaker and right microphone being disposed proximate the right fixation.
7. The electronic device of claim 5, wherein the right channel processing module comprises a right channel delay module for delaying the right cancellation signal O R;
The left channel processing module comprises a left channel delay module, and the left channel delay module is used for carrying out delay processing on a left offset signal O L.
8. The electronic device of claim 5, wherein the left microphone and/or right microphone are used for voice pickup.
9. A sound field processing apparatus, characterized by comprising:
A memory for storing an executable computer program;
a left speaker, a right speaker, a left microphone, and a right microphone;
A processor for executing the method according to any of claims 1 to 4 according to the computer program.
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