CN112291673B - Sound phase positioning circuit and equipment - Google Patents
Sound phase positioning circuit and equipment Download PDFInfo
- Publication number
- CN112291673B CN112291673B CN202011194518.5A CN202011194518A CN112291673B CN 112291673 B CN112291673 B CN 112291673B CN 202011194518 A CN202011194518 A CN 202011194518A CN 112291673 B CN112291673 B CN 112291673B
- Authority
- CN
- China
- Prior art keywords
- channel audio
- signal
- audio signal
- signals
- power amplification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
- G10L25/51—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use for comparison or discrimination
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Computational Linguistics (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Otolaryngology (AREA)
- Stereophonic System (AREA)
Abstract
The invention discloses a sound phase positioning circuit and sound phase positioning equipment, which comprise a plurality of vibration elements, a signal processing module and a first power amplification module, wherein the signal processing module is used for acquiring N-channel audio signals, and identifying and extracting each channel audio signal of the N-channel audio signals one by one to obtain N-channel direction signals; the first power amplification module is used for carrying out power amplification on the N paths of direction signals one by one, and driving the N vibration elements to generate direction vibration information in a one-to-one correspondence mode by utilizing the N paths of direction signals subjected to power amplification so as to carry out sound phase positioning based on the direction vibration information. Therefore, the sound phase positioning circuit carries out sound phase positioning by adopting vibration sense, and the multichannel audio signals keep the original number of sound channels under the scheme, can feel clear vibration information in different directions, and therefore improves the sound phase positioning accuracy of the multichannel audio signals.
Description
Technical Field
The invention relates to the field of sound phase positioning, in particular to a sound phase positioning circuit and equipment.
Background
At present, when existing panning equipment restores multi-channel sound positioning information, the existing panning equipment is usually realized by adopting a mode of reproducing two loudspeakers, the principle of the existing panning equipment is that panning positioning is carried out according to the amplitude and time difference of sound reproduced by the two loudspeakers, specifically, the existing multi-channel audio signals are subjected to down-mixing (down mix) processing to obtain two-channel audio signals, the two-channel audio signals respectively drive the two loudspeakers to generate certain sound pressure in the air, and the sound pressure generated by the two loudspeakers is respectively applied to two ears, so that a synthesized sound image is formed in the brain of a person, and the image is the panning process of the sound. However, the original multi-channel audio signal becomes blurred after being downmixed, which results in poor sound effect played by two speakers, thereby reducing the accuracy of the acoustic phase positioning of the multi-channel audio signal.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a sound phase positioning circuit and equipment, which adopt vibration sense to position the sound phase, and under the scheme, the multi-channel audio signal keeps the original number of sound channels and can feel clear vibration information in different directions, thereby improving the sound phase positioning accuracy of the multi-channel audio signal.
In order to solve the above technical problem, the present invention provides a sound phase positioning circuit, including:
n vibrating elements; wherein N is an integer greater than 1;
the signal processing module is used for acquiring N-channel audio signals, and identifying and extracting each channel audio signal of the N-channel audio signals one by one to obtain N-channel direction signals;
and the first power amplification module is used for carrying out power amplification on the N paths of direction signals one by one, and driving the N vibration elements to generate direction vibration information in a one-to-one correspondence mode by utilizing the N paths of direction signals subjected to power amplification so as to carry out sound phase positioning based on the direction vibration information.
Preferably, the signal processing module is specifically configured to:
predetermining the level amplitude and the frequency range of each channel audio signal of the N-channel audio signals to be subjected to sound phase positioning;
acquiring N-channel audio signals, and identifying and extracting the audio signals of each channel of the N-channel audio signals one by one according to the predetermined level amplitude and frequency band of each channel audio signal to obtain N-channel direction signals.
Preferably, the signal processing module is further configured to:
screening out a to-be-enhanced directional signal of which the signal level amplitude is greater than a preset level amplitude threshold value from the N paths of directional signals before transmitting the N paths of directional signals to the first power amplification module;
and performing signal enhancement processing on the directional signal to be enhanced so as to transmit N paths of directional signals subjected to signal enhancement processing to the first power amplification module.
Preferably, the first power amplifying module includes:
n programmable logarithmic amplifiers; each programmable logarithmic amplifier is used for judging whether the self-input direction signal to be amplified is larger than a preset level amplitude set value or not, and if so, performing power amplification processing on the direction signal to be amplified under a first amplification factor; if not, performing power amplification processing on the direction signal to be amplified under a second amplification factor; wherein the first magnification is greater than the second magnification.
Preferably, when N is 8, the vibration element includes sub-vibration elements distributed in 8 directions of left, right, up, down, left up, right up, left down, right down of the human head.
Preferably, the vibrating element is embodied as a bone conduction vibrator or a micro-vibration motor.
Preferably, the panning positioning circuit further comprises:
a left moving coil horn;
a right moving coil horn;
the down mix module is used for acquiring the N-channel audio signal and performing down mixing processing on the N-channel audio signal to obtain a left-channel audio signal and a right-channel audio signal;
and the second power amplification module is used for respectively carrying out power amplification on the left channel audio signal and the right channel audio signal, and driving the left moving coil loudspeaker and the right moving coil loudspeaker to generate directional sound pressure information by utilizing the left channel audio signal and the right channel audio signal after power amplification in a one-to-one correspondence manner so as to combine the directional sound pressure information and the directional vibration information to carry out sound phase positioning.
Preferably, when the N-channel audio signal is an audio compressed signal, the panning positioning circuit further includes:
and the decoding module is respectively connected with the signal processing module and the Downmix module and is used for decoding the N-channel audio signal and transmitting the decoded N-channel audio signal to the signal processing module and the Downmix module for processing.
In order to solve the above technical problem, the present invention further provides a panning positioning apparatus, including:
an apparatus body;
the acoustic phase positioning circuit is arranged on the equipment body; wherein, the acoustic phase positioning circuit is any one of the acoustic phase positioning circuits.
Preferably, the panning positioning device is specifically an AR device or a VR device or an earphone device.
The invention provides a sound phase positioning circuit, which comprises a plurality of vibration elements, a signal processing module and a first power amplification module, wherein the signal processing module is used for acquiring N-channel audio signals, and identifying and extracting the audio signals of each channel of the N-channel audio signals one by one to obtain N-channel direction signals; the first power amplification module is used for carrying out power amplification on the N paths of direction signals one by one, and driving the N vibration elements to generate direction vibration information in a one-to-one correspondence mode by utilizing the N paths of direction signals subjected to power amplification so as to carry out sound phase positioning based on the direction vibration information. Therefore, the sound phase positioning circuit carries out sound phase positioning by adopting vibration sense, and the multichannel audio signals keep the original number of sound channels under the scheme, can feel clear vibration information in different directions, and therefore improves the sound phase positioning accuracy of the multichannel audio signals.
The invention also provides the acoustic phase positioning equipment which has the same beneficial effect as the acoustic phase positioning circuit.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described 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 to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a first phase-finding circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first phase localization circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first power amplifying module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second phase-locked loop according to an embodiment of the present invention.
Detailed Description
The core of the invention is to provide a sound phase positioning circuit and equipment, which adopt vibration sense to position the sound phase, and under the scheme, the multi-channel audio signal keeps the original sound channel quantity, and can feel clear vibration information in different directions, thereby improving the sound phase positioning accuracy of the multi-channel audio signal.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, 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.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a first phase-locked loop circuit according to an embodiment of the present invention.
The phase localization circuit includes:
n vibrating elements S; wherein N is an integer greater than 1;
the signal processing module 1 is configured to acquire an N-channel audio signal, and identify and extract each channel audio signal of the N-channel audio signal one by one to obtain N-channel directional signals;
the first power amplification module 2 is configured to perform power amplification on the N paths of direction signals one by one, and drive the N vibration elements S to generate directional vibration information in a one-to-one correspondence manner by using the N paths of direction signals after power amplification, so as to perform sound phase positioning based on the directional vibration information.
Specifically, the acoustic phase positioning circuit of the present application includes N vibrating elements S, a signal processing module 1 and a first power amplification module 2, and its operating principle is:
the multichannel audio signals to be phase-localized are composed of mutually independent audio signals recorded in advance at different spatial positions. When the multi-channel audio signal is subjected to sound phase positioning, the multi-channel audio signal is firstly input into the signal processing module 1, after the multi-channel audio signal is obtained by the signal processing module 1, the audio signals of all channels of the multi-channel audio signal are identified one by one, the audio signals of all channels of the multi-channel audio signal are extracted, and then the multi-channel direction signal for sound phase positioning is obtained, and then the multi-channel direction signal is input into the first power amplification module 2.
After acquiring the multi-path direction signals, the first power amplification module 2 performs power amplification on the multi-path direction signals one by one to obtain multi-path power-amplified direction signals, and then drives the plurality of vibration elements S to generate direction vibration information in a one-to-one correspondence manner by using the multi-path power-amplified direction signals. The plurality of vibration elements S are distributed in different directions of the head of a person, and when the first power amplification module 2 correspondingly drives the vibration elements S in different directions to vibrate, the head of the person can feel clear vibration information in different directions, so that accurate sound phase positioning is performed by utilizing vibration sense.
More specifically, the multi-channel audio Signal is a Digital Signal in a data format such as TMD, I2S, or SPDIF, and the Signal Processing module 1 of the present application can be implemented by using a DSP (Digital Signal Processing) chip.
The invention provides a sound phase positioning circuit which comprises a plurality of vibration elements, a signal processing module and a first power amplification module, wherein the signal processing module is used for acquiring N-channel audio signals, and identifying and extracting the audio signals of each channel of the N-channel audio signals one by one to obtain N-channel direction signals; the first power amplification module is used for carrying out power amplification on the N paths of direction signals one by one, and driving the N vibration elements to generate direction vibration information in a one-to-one correspondence mode by utilizing the N paths of direction signals after power amplification so as to carry out sound phase positioning based on the direction vibration information. Therefore, the sound phase positioning circuit adopts vibration to perform sound phase positioning, and under the scheme, the multi-channel audio signals keep the original sound channel number, and clear vibration information in different directions can be sensed, so that the sound phase positioning accuracy of the multi-channel audio signals is improved.
On the basis of the above-described embodiment:
as an alternative embodiment, the signal processing module 1 is specifically configured to:
predetermining the level amplitude and the frequency range of each channel audio signal of the N-channel audio signals to be subjected to sound phase positioning;
and acquiring N-channel audio signals, and identifying and extracting each channel audio signal of the N-channel audio signals one by one according to the predetermined level amplitude and frequency band of each channel audio signal to obtain N-channel direction signals.
Specifically, the multi-channel audio signal to be phase-localized is recorded in advance, the level amplitude and frequency band of each channel audio signal are known, and the level amplitudes of the channel audio signals of the multi-channel audio signal are different, so that the signal processing module 1 identifies and extracts the channel audio signals of the multi-channel audio signal one by one according to the following working principle:
the signal processing module 1 stores in advance the level amplitude and frequency band of each channel audio signal of the multi-channel audio signal to be subjected to facies positioning for use in subsequently identifying each channel audio signal of the multi-channel audio signal. After acquiring the multi-channel audio signals, the signal processing module 1 reads the level amplitudes and frequency bands of the audio signals of the channels of the multi-channel audio signals stored in advance, so as to identify the audio signals of the channels of the multi-channel audio signals one by one according to the level amplitudes and frequency bands of the audio signals of the channels of the multi-channel audio signals stored in advance, extract the audio signals of the channels of the multi-channel audio signals, and obtain the multi-channel directional signals for sound phase positioning.
As an alternative embodiment, the signal processing module 1 is further configured to:
before the N paths of direction signals are transmitted to the first power amplification module 2, direction signals to be enhanced, of which the signal level amplitude is larger than a preset level amplitude threshold value, are screened from the N paths of direction signals;
and performing signal enhancement processing on the direction signal to be enhanced so as to transmit the N paths of direction signals subjected to the signal enhancement processing to the first power amplification module 2.
Further, considering that in the multi-path directional signals, if the signal level amplitude difference between the directional signal with the low level amplitude and the directional signal with the high level amplitude is increased, which is helpful for performing subsequent sound phase positioning, the signal processing module 1 of the present application does not transmit the multi-path directional signals to the first power amplification module 2 after obtaining the multi-path directional signals for sound phase positioning, but compares each path of directional signals with a preset level amplitude threshold value, so as to screen out directional signals with signal level amplitudes larger than the preset level amplitude threshold value from the multi-path directional signals, that is, directional signals to be enhanced, and then performs signal enhancement processing on the directional signals to be enhanced, so as to transmit the multi-path directional signals after signal enhancement processing to the first power amplification module 2.
As an alternative embodiment, the first power amplifying module 2 includes:
n programmable logarithmic amplifiers; each programmable logarithmic amplifier is used for judging whether the direction signal to be amplified input by the programmable logarithmic amplifier is larger than a preset level amplitude set value or not, and if so, performing power amplification processing on the direction signal to be amplified under a first amplification factor; if not, performing power amplification processing on the direction signal to be amplified under a second amplification factor; wherein the first magnification is larger than the second magnification.
Specifically, the signal processing module 1 outputs N paths of direction signals, and the first power amplifying module 2 includes N paths of programmable logarithmic amplifiers for receiving the N paths of direction signals one by one for processing. The N programmable logarithmic amplifiers are independent from each other, the configuration parameters of the programmable logarithmic amplifiers can be dynamically controlled through software so that the programmable logarithmic amplifiers work in a required amplification state, and N channels of the N programmable logarithmic amplifiers can work in a linkage state under the control of the software.
For each programmable logarithmic amplifier, the working principle is as follows: each programmable logarithmic amplifier is provided with a level amplitude set value in advance, and when the direction signal to be amplified which is input by the programmable logarithmic amplifier per se is larger than the preset level amplitude set value, the programmable logarithmic amplifier is set in a high amplification factor working state, namely, the power amplification treatment is carried out on the direction signal to be amplified which is input by the programmable logarithmic amplifier per se under the high amplification factor; when the direction signal to be amplified input by the programmable logarithmic amplifier is not more than the preset level amplitude set value, the programmable logarithmic amplifier is set in a low amplification factor working state, namely, the power amplification treatment is carried out on the direction signal to be amplified input by the programmable logarithmic amplifier under the low amplification factor, the signal level amplitude difference between the direction signal with the low level amplitude and the direction signal with the high level amplitude is continuously increased, and the subsequent acoustic phase positioning is facilitated.
As an alternative embodiment, when N is 8, the vibration element S includes sub-vibration elements distributed in 8 directions of left, right, up, down, left up, right up, left down, and right down of the human head.
Specifically, currently, when a multi-channel audio signal is recorded, an 8-channel audio signal is more (7.1 channels), and a minimum of 6-channel audio signals (5.1 channels) are recorded. The multi-channel audio signal of the present application may be an 8-channel audio signal, and as shown in fig. 2, 8 vibration elements S (such as bone conduction vibrators, bone conduction vibrators for short) are specifically distributed in 8 directions of the left, right, up, down, left up, right up, left down, and right down of the head of the human body, so that the head of the human body feels vibration in corresponding directions; as shown in fig. 3, the first power amplification module 2 includes 4 pairs of programmable logarithmic amplifiers.
As an alternative embodiment, the vibration element S is embodied as a bone conduction vibrator or a micro-vibration motor.
Specifically, the vibration element S of the present application may be a bone conduction vibrator to express the acoustic phase positioning information by using a vibration sense, or may be a micro-vibration motor to express the acoustic phase positioning information by using a vibration sense, which is not particularly limited in the present application.
As an alternative embodiment, the panning positioning circuit further comprises:
a left moving coil horn L;
a right moving coil horn R;
the down mix module 3 is configured to obtain an N-channel audio signal, and perform down mixing processing on the N-channel audio signal to obtain a left-channel audio signal and a right-channel audio signal;
and the second power amplification module 4 is configured to perform power amplification on the left channel audio signal and the right channel audio signal respectively, and drive the left moving coil loudspeaker L and the right moving coil loudspeaker R to generate directional sound pressure information in a one-to-one correspondence manner by using the left channel audio signal and the right channel audio signal after the power amplification, so as to perform sound phase positioning by combining the directional sound pressure information and the directional vibration information.
Further, the acoustic phase positioning circuit of this application still includes left moving coil loudspeaker L, right moving coil loudspeaker R, Downmix module 3 and second power amplification module 4, and its theory of operation is:
when performing phase-finding on a multi-channel audio signal, the present application inputs the multi-channel audio signal to the signal processing module 1 on one hand, and inputs the multi-channel audio signal to the down mix module 3 on the other hand, after the down mix module 3 acquires the multi-channel audio signal, the multi-channel audio signal is down mixed to reduce the number of channels, so as to obtain two channel audio signals, which are a left channel audio signal and a right channel audio signal respectively, and then the left channel audio signal and the right channel audio signal are input to the second power amplifying module 4.
After the left channel audio signal and the right channel audio signal are obtained, the second power amplification module 4 respectively performs power amplification on the left channel audio signal and the right channel audio signal to obtain a power-amplified left channel audio signal and a power-amplified right channel audio signal, and then drives the left moving coil loudspeaker L and the right moving coil loudspeaker R to generate directional sound pressure information in a one-to-one correspondence manner by using the power-amplified left channel audio signal and the power-amplified right channel audio signal. The left moving coil loudspeaker L is placed on a left ear of a human body, the right moving coil loudspeaker R is placed on a right ear of the human body, and sound pressure generated by the left moving coil loudspeaker L and the right moving coil loudspeaker R is added on the two ears respectively, so that a synthesized sound image is formed in the brain of a human, namely, sound phase positioning is performed by utilizing direction sound pressure information, and therefore the fact that the loudspeaker and a vibrating element are combined to perform sound phase positioning is achieved, and accuracy is high.
In addition, a post-processing module can be additionally arranged between the Downmix module 3 and the second power amplification module 4, and is used for processing the left channel audio signal and the right channel audio signal so as to improve the definition of the left channel audio signal and the right channel audio signal.
As an alternative embodiment, when the N-channel audio signal is an audio compressed signal, the panning circuit further comprises:
and the decoding module 5 is respectively connected with the signal processing module 1 and the Downmix module 3, and is configured to perform decoding processing on the N-channel audio signal, and transmit the decoded N-channel audio signal to the signal processing module 1 and the Downmix module 3 for processing.
Further, the multi-channel audio signal of the present application is usually an audio compressed signal, in this case, before the multi-channel audio signal is input to the signal processing module 1 and the down mix module 3, the multi-channel audio signal needs to be decoded by the decoding module 5, and then processed by the signal processing module 1 and the down mix module 3.
In addition, the acoustic phase positioning circuit of the application can be applied to AR (Augmented Reality) equipment or VR (Virtual Reality) equipment or earphone equipment, so that the equipment can realize the acoustic phase positioning function.
The present application further provides a sound phase localization apparatus, including:
an apparatus body;
the acoustic phase positioning circuit is arranged on the equipment body; wherein, the sound phase positioning circuit is any one of the sound phase positioning circuits.
As an alternative embodiment, the panning positioning device is specifically an AR device or a VR device or an earphone device.
For the introduction of the panning positioning apparatus provided in the present application, reference is made to the above-mentioned embodiments of the panning positioning circuit, which are not described herein again.
It should also be noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. An acoustic phase localization circuit, comprising:
n vibrating elements; wherein N is an integer greater than 1;
the signal processing module is used for acquiring N-channel audio signals, and identifying and extracting each channel audio signal of the N-channel audio signals one by one to obtain N-channel direction signals;
the first power amplification module is used for carrying out power amplification on the N paths of direction signals one by one, and driving the N vibration elements to generate direction vibration information in a one-to-one correspondence mode by using the N paths of direction signals subjected to power amplification so as to carry out sound phase positioning based on the direction vibration information; wherein;
the first power amplifying module includes:
n programmable logarithmic amplifiers; each programmable logarithmic amplifier is used for judging whether the self-input direction signal to be amplified is larger than a preset level amplitude set value or not, and if so, performing power amplification processing on the direction signal to be amplified under a first amplification factor; if not, performing power amplification processing on the direction signal to be amplified under a second amplification factor; wherein the first magnification is greater than the second magnification.
2. The panning positioning circuit of claim 1, wherein the signal processing module is specifically configured to:
predetermining the level amplitude and the frequency range of each channel audio signal of the N-channel audio signals to be subjected to sound phase positioning;
acquiring N-channel audio signals, and identifying and extracting the audio signals of each channel of the N-channel audio signals one by one according to the predetermined level amplitude and frequency band of each channel audio signal to obtain N-channel direction signals.
3. The panning positioning circuit of claim 2, wherein the signal processing module is further configured to:
screening out a to-be-enhanced direction signal of which the signal level amplitude is greater than a preset level amplitude threshold value from the N paths of direction signals before transmitting the N paths of direction signals to the first power amplification module;
and performing signal enhancement processing on the direction signal to be enhanced so as to transmit the N paths of direction signals subjected to the signal enhancement processing to the first power amplification module.
4. The acoustic phase localization circuit of claim 1, wherein when N is 8, the vibration element comprises sub-vibration elements distributed in 8 directions of left, right, up, down, left up, right up, left down, right down of the human head.
5. The phonofacies localization circuit of claim 1 wherein said vibration element is embodied as a bone conduction vibrator or a micro-vibration motor.
6. The panning positioning circuit of any of claims 1 to 5, further comprising:
a left moving coil horn;
a right moving coil horn;
the down mix module is used for acquiring the N-channel audio signal and performing down mixing processing on the N-channel audio signal to obtain a left-channel audio signal and a right-channel audio signal;
and the second power amplification module is used for respectively carrying out power amplification on the left channel audio signal and the right channel audio signal, and utilizing the left channel audio signal and the right channel audio signal after the power amplification to drive the left moving coil loudspeaker and the right moving coil loudspeaker to generate directional sound pressure information in a one-to-one correspondence manner so as to combine the directional sound pressure information and the directional vibration information to carry out sound phase positioning.
7. The panning positioning circuit of claim 6, wherein when said N channel audio signal is an audio compressed signal, said panning positioning circuit further comprises:
and the decoding module is respectively connected with the signal processing module and the Downmix module and is used for decoding the N-channel audio signal and transmitting the decoded N-channel audio signal to the signal processing module and the Downmix module for processing.
8. An acoustic phase localization apparatus, comprising:
an apparatus body;
the acoustic phase positioning circuit is arranged on the equipment body; wherein the panning positioning circuit is as claimed in any one of claims 1 to 7.
9. The panning positioning device of claim 8, wherein said panning positioning device is in particular an AR device or a VR device or an earpiece device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011194518.5A CN112291673B (en) | 2020-10-30 | 2020-10-30 | Sound phase positioning circuit and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011194518.5A CN112291673B (en) | 2020-10-30 | 2020-10-30 | Sound phase positioning circuit and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112291673A CN112291673A (en) | 2021-01-29 |
| CN112291673B true CN112291673B (en) | 2022-09-13 |
Family
ID=74353792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011194518.5A Active CN112291673B (en) | 2020-10-30 | 2020-10-30 | Sound phase positioning circuit and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112291673B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11275696A (en) * | 1998-01-22 | 1999-10-08 | Sony Corp | Headphone, headphone adapter, and headphone device |
| JP2002027600A (en) * | 2000-07-07 | 2002-01-25 | Sony Corp | Multi-channel audio reproducing system |
| JP2005278125A (en) * | 2004-03-26 | 2005-10-06 | Victor Co Of Japan Ltd | Multi-channel audio signal processing device |
| CN1617632A (en) * | 2004-11-30 | 2005-05-18 | 陈奚平 | Head acoustic device and sound track reproducing method |
| US8553892B2 (en) * | 2010-01-06 | 2013-10-08 | Apple Inc. | Processing a multi-channel signal for output to a mono speaker |
| CN103686502A (en) * | 2012-09-05 | 2014-03-26 | 深圳市凯聚源科技有限公司 | 5.1 sound track Bluetooth noise cancelling headset |
| CN106879264A (en) * | 2014-10-20 | 2017-06-20 | 索尼公司 | Audio playback |
| CN107040862A (en) * | 2016-02-03 | 2017-08-11 | 腾讯科技（深圳）有限公司 | Audio-frequency processing method and processing system |
| CN205959003U (en) * | 2016-08-24 | 2017-02-15 | 广东众易云网智能科技有限公司 | Can be used to stereoly and intelligent loudspeaker distribution system system of decoding |
| CN106658339B (en) * | 2016-12-27 | 2019-04-02 | 广东小天才科技有限公司 | Audio signal processing method, device and system |
-
2020
- 2020-10-30 CN CN202011194518.5A patent/CN112291673B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112291673A (en) | 2021-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3061268B1 (en) | Method and mobile device for processing an audio signal | |
| WO2016063613A1 (en) | Audio playback device | |
| EP3364638B1 (en) | Recording method, recording playing method and apparatus, and terminal | |
| EP3824464B1 (en) | Controlling audio focus for spatial audio processing | |
| WO2020182020A1 (en) | Audio signal playback method and display device | |
| EP2229012B1 (en) | Device, method, program, and system for canceling crosstalk when reproducing sound through plurality of speakers arranged around listener | |
| US9332349B2 (en) | Sound image localization apparatus | |
| CN106792333A (en) | The sound system of television set | |
| CN110024418A (en) | Sound enhancing devices, sound Enhancement Method and sound processing routine | |
| JP5281695B2 (en) | Acoustic transducer | |
| US12075234B2 (en) | Control apparatus, signal processing method, and speaker apparatus | |
| JP2000228799A (en) | Method for localizing sound image of reproduced sound of audio signal for stereo reproduction to outside of speaker | |
| CN112291673B (en) | Sound phase positioning circuit and equipment | |
| EP2101517B1 (en) | Audio processor for converting a mono signal to a stereo signal | |
| KR20050012085A (en) | Apparatus and Method for playing three-dimensional sound | |
| US20030016837A1 (en) | Stereo sound circuit device for providing three-dimensional surrounding effect | |
| KR100566131B1 (en) | Apparatus and method for generating stereophonic sound with sound image positioning | |
| CN115938388A (en) | Three-dimensional audio signal processing method and device | |
| CN111263272B (en) | Audio signal shunting and returning method and system | |
| JPWO2019044664A1 (en) | Audio signal processor | |
| JP2001186093A (en) | Information transmission method and information transmitter | |
| KR100619311B1 (en) | Portable sound processor | |
| JP2024079802A (en) | Acoustic Echo Cancellation Unit | |
| KR100641421B1 (en) | Loudspeakers in audio systems | |
| CN114999439A (en) | Audio signal processing method and audio signal processing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |