CN113012677A - Sound directional transmission method, system, electronic equipment and storage medium - Google Patents
Sound directional transmission method, system, electronic equipment and storage medium Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000007781 pre-processing Methods 0.000 claims description 11
- 230000002194 synthesizing effect Effects 0.000 claims description 8
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- 230000033001 locomotion Effects 0.000 abstract description 6
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
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Abstract
The invention discloses a sound directional transmission method, a system, electronic equipment and a storage medium, wherein the sound directional transmission method acquires an image of a sound receiving end in a preset range by calling a camera; calibrating in advance, determining the range of face recognition, and performing face recognition on the image to determine the position coordinate of a receiving end in real time; adjusting the sound transmission end to play sound to the position coordinate; the invention can intelligently judge the position of the receiving end and control the direction of the sound source played according to the motion direction of the receiving end; the sound source directional playing can be carried out on specific groups and groups in a multi-sound-source environment.
Description
Technical Field
The invention relates to the technical field of artificial intelligence, in particular to a sound directional transmission method, a sound directional transmission system, electronic equipment and a storage medium.
Background
The directional propagation of sound waves (20Hz-20kHz) can be realized through a directional transducer or a transducer array, the maximum dimension of a radiation surface of the transducer and the wavelength of the emitted sound waves determine the size of a directional opening angle of the emitted sound beams, namely the larger the dimension of the transducer is, the higher the sound wave frequency is, the better the directivity is, the better the effect of the directional sound propagation is, the larger the dimension of a loudspeaker required for realizing the directional transmission of sound in an audible sound range is, the wider the beam opening angle is even in a hemispherical shape, and the problem of sound wave leakage caused by side lobes still exists outside the beam opening angle range, so that the requirement of the high-directivity loudspeaker at present cannot be met. Therefore, the high directivity of the high frequency sound wave and the self-demodulation principle of the nonlinear acoustics are utilized to realize the directional propagation of the audible sound, at the moment, the high directivity ultrasonic wave is emitted by the high frequency loudspeaker, and the nonlinear effect when the sound wave propagates in the air can enable the sound field to generate difference frequency, sum frequency and frequency multiplication sound waves. Due to the high absorption characteristic of the high-frequency sound wave, only the difference frequency sound wave with lower frequency is left after the sound wave is finally propagated for a distance, and the difference frequency is the high-directivity audible sound to be emitted.
The development of the directional sound technology is mature gradually, and the directional sound technology is applied more and more in the field of media advertisements, and is widely applied to occasions such as cultural science and sports such as exhibition halls of museum exhibition halls and enterprises, large-scale exhibitions, market supermarkets, automobiles and the like. However, the current conditions for realizing directional sound playing have certain limitations, and only a fixed area can be directionally played in the sound playing process, but the surrounding environment cannot be intelligently judged, and the complete fixed-point directional sound source playing effect can be achieved according to the movement of a specific object in the environment.
Disclosure of Invention
The invention aims to provide a method, a system, electronic equipment and a storage medium for directionally transmitting sound, which are used for positioning people needing to play a sound source by combining an artificial intelligence judgment technology of face recognition so as to realize the method for directionally transmitting the sound.
In a first aspect, an embodiment of the present invention provides a sound directional transmission method, where the sound directional transmission method includes the following steps:
calling a camera to obtain an image of a sound receiving end in a preset range;
calibrating in advance, determining the range of face recognition, and performing face recognition on the image to determine the position coordinate of a receiving end in real time;
and adjusting a sound transmission end to play sound to the position coordinate, wherein the sound is preprocessed.
Optionally, the number of the sound transmission ends is multiple, wherein each sound transmission end is configured with an image acquisition device, and the direction of the sound transmission end is adjusted according to a position coordinate closest to the sound transmission end.
Optionally, the sound pre-processing comprises;
synthesizing the audio frequency by a phase control array method;
taking the wave source as the center of a circle, and drawing a semicircle with the same radius to obtain the wave front of each wave;
and according to the position coordinate of the receiving end, determining a main wave, and transmitting the main wave to the position coordinate direction.
In a second aspect, an embodiment of the present invention provides a sound directional transmission system, where the sound directional transmission system includes:
the image acquisition subsystem is used for calling the camera to acquire the image of the sound receiving end in the preset range;
the position coordinate determination subsystem is used for carrying out face recognition on the image so as to determine the position coordinate of the receiving end in real time;
and the adjusting subsystem is used for adjusting the sound transmission end to play sound to the position coordinate, wherein the sound is preprocessed.
Optionally, the adjusting subsystem includes a sound preprocessing module, and the sound preprocessing module specifically includes:
an audio synthesizing unit for synthesizing audio by a phase control array method;
the wave front acquisition unit is used for drawing a semicircle by taking the same radius with the wave source as the center of a circle to obtain the wave front of each wave;
and the main wave transmission unit is used for determining a main wave according to the position coordinate of the receiving end and transmitting the main wave to the position coordinate direction.
Optionally, the sound transmission end includes a plurality of sound boxes at fixed playing locations, wherein each sound box is configured with a camera.
Optionally, the loudspeaker box at the specific position is controlled to play in the main gain direction.
Optionally, the sound boxes at the fixed playing place are divided into two rows, and the two rows of sound boxes face the receiving end and are arranged at an acute angle.
In a third aspect, the present invention provides an electronic device, comprising:
a processor; a memory for storing processor-executable instructions;
wherein the processor implements the above method by executing the executable instructions.
In a fourth aspect, the present invention provides a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the above-described method.
Advantageous effects
The invention provides a sound directional transmission method, a sound directional transmission system, electronic equipment and a storage medium, wherein the sound directional transmission method acquires an image of a sound receiving end in a preset range by calling a camera; calibrating in advance, determining the range of face recognition, and performing face recognition on the image to determine the position coordinate of a receiving end in real time; adjusting the sound transmission end to play sound to the position coordinate; the sound is preprocessed, the position of a receiving end can be intelligently judged, and the direction of a sound source played can be controlled according to the motion direction of the receiving end; the sound source directional playing can be carried out on specific groups and groups in a multi-sound-source environment.
Drawings
Fig. 1 is a flow chart of a method for directional sound transmission according to an embodiment of the present invention;
FIG. 2 is a flow chart of a sound preprocessing method according to an embodiment of the present invention;
FIG. 3 is a block diagram of a directional sound transmission system according to an embodiment of the present invention;
FIG. 4 is a block diagram of a sound preprocessing module according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an arrangement of speakers according to an embodiment of the present invention;
fig. 6 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, 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.
The invention aims to provide a method, a system, electronic equipment and a storage medium for directionally transmitting sound, which are used for positioning people needing to play a sound source by combining an artificial intelligence judgment technology of face recognition so as to realize the method for directionally transmitting the sound.
The invention will be further described with reference to the following description and specific examples, taken in conjunction with the accompanying drawings:
fig. 1 shows a flow chart of a sound directional transmission method according to an embodiment of the present invention, and as shown in fig. 1, the sound directional transmission method includes the following steps:
s20, calling a camera to obtain an image of a sound receiving end in a preset range;
s40, calibrating in advance, determining the range of face recognition, and performing face recognition on the image to determine the position coordinates of the receiving end in real time;
and S60, adjusting the sound transmission end to play sound to the position coordinate, wherein the sound is preprocessed.
The embodiment provides a sound directional transmission method, which obtains an image of a sound receiving end in a preset range by calling a camera; carrying out face recognition on the image to determine the position coordinate of a receiving end in real time; adjusting the sound transmission end to play sound to the position coordinate; wherein the sound is pre-processed; the position of the receiving end can be intelligently judged, and the direction of the sound source played can be controlled according to the motion direction of the receiving end.
In some embodiments, the number of the sound transmission ends is multiple, wherein each sound transmission end is configured with an image acquisition device, and the direction of the sound transmission end is adjusted according to the position coordinate closest to the sound transmission end.
Specifically, as shown in fig. 2, the sound preprocessing includes;
s601, synthesizing audio by a phase control array method;
s602, taking a wave source as a circle center, and drawing a semicircle with the same radius to obtain the wave front of each wave;
s603, determining a main wave according to the position coordinate of the receiving end, and transmitting the main wave to the position coordinate direction.
In the embodiment, audio is synthesized by a phase control array method, based on the huygens principle, when a plurality of wave sources exist and the frequency of waves generated by each point wave source is consistent, each point wave source is equivalent to a wavelet source, and the point wave sources are arranged in a plane to generate a wave surface; and taking the wave source as the center of a circle, drawing a semicircle with the same radius to obtain the wave front of each wave, and transmitting the main wave to the position coordinate direction according to the main wave determined by the position coordinate of the receiving end to realize the controllable directional sound source playing method.
In some embodiments, the number of the sound transmission ends is multiple, wherein each sound transmission end is configured with an image acquisition device (e.g., a camera), the multiple transmission ends are grouped, and the direction of the sound transmission end is adjusted according to a position coordinate closest to each group of the transmission ends. The sound source directional playing can be carried out on specific groups and groups in a multi-sound-source environment.
Based on the same inventive concept, the embodiments of the present application further provide a directional sound transmission system, which can be used to implement the methods described in the above embodiments, as described in the following embodiments. Because the principle of solving the problem of the sound directional transmission system is similar to that of a sound directional transmission method, the implementation of the sound directional transmission system can refer to the implementation of the sound directional transmission method, and repeated parts are not described again. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. While the system described in the embodiments below is preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.
As shown in fig. 3, an embodiment of the present invention provides a directional sound transmission system, including:
the image acquisition subsystem 20 is used for calling a camera to acquire an image of a sound receiving end in a preset range;
a position coordinate determination subsystem 40, configured to perform face recognition on the image to determine a position coordinate of a receiving end in real time;
and an adjusting subsystem 60 for adjusting the sound transmission end to play the sound to the position coordinate, wherein the sound is preprocessed.
The embodiment provides a sound directional transmission system, which calls a camera to acquire an image of a sound receiving end within a predetermined range through an image acquisition subsystem 20; the position coordinate determination subsystem 40 performs face recognition on the image to determine the position coordinate of the receiving end in real time; an adjusting subsystem 60 for adjusting the sound transmission end to play sound to the position coordinate; wherein the sound is pre-processed; the position of the receiving end can be intelligently judged, and the direction of the sound source played can be controlled according to the motion direction of the receiving end.
Specifically, as shown in fig. 4, the adjustment subsystem 60 includes a sound preprocessing module, and the sound preprocessing module specifically includes:
an audio synthesizing unit 601 which synthesizes audio by a phase control array method;
a wavefront obtaining unit 602, configured to draw a semicircle with the same radius by using the wave source as a center of circle, so as to obtain wavefronts of each wave;
the main wave transmission unit 603 is configured to determine a main wave according to the position coordinate of the receiving end, and transmit the main wave to the position coordinate direction.
In the embodiment, audio is synthesized by a phase control array method, based on the huygens principle, when a plurality of wave sources exist and the frequency of waves generated by each point wave source is consistent, each point wave source is equivalent to a wavelet source, and the point wave sources are arranged in a plane to generate a wave surface; and taking the wave source as the center of a circle, drawing a semicircle with the same radius to obtain the wave front of each wave, and transmitting the main wave to the position coordinate direction according to the main wave determined by the position coordinate of the receiving end to realize the controllable directional sound source playing method.
Specifically, the sound transmission end comprises a plurality of sound boxes at fixed playing places, wherein each sound box is provided with a camera.
Specifically, the sound box at a specific position is controlled to play in the main gain direction.
In some embodiments, as shown in fig. 5, the sound boxes at the fixed playing location are divided into two rows, and the two rows of sound boxes face the receiving end and are arranged at an acute angle. In this embodiment, 10 sound boxes are taken as an example, the sound boxes are divided into two rows, and the two rows of sound boxes face the receiving end and are arranged at an acute angle. Calling a camera to obtain an image of a sound receiving end in a preset range; carrying out face recognition on the image to determine the position coordinate of a receiving end in real time; adjusting the sound transmission end to play sound to the position coordinate, intelligently judging the position of the receiving end, and controlling the direction of a played sound source according to the motion direction of the receiving end;
in some embodiments, source-oriented playback may be performed on groups of specific groups in a multi-source environment. The sound transmission terminals (such as sound boxes) are multiple, wherein each sound transmission terminal is provided with an image acquisition device (such as a camera), the multiple transmission terminals are grouped, and the direction of the sound transmission terminal is adjusted according to the position coordinate closest to each group of transmission terminals. The sound source directional playing can be carried out on specific groups and groups in a multi-sound-source environment.
An electronic device is also provided in the embodiments of the present application, and fig. 6 shows a schematic structural diagram of an electronic device to which the embodiments of the present application can be applied, and as shown in fig. 6, the computer electronic device includes a Central Processing Unit (CPU)601 which can execute various appropriate actions and processes according to a program stored in a Read Only Memory (ROM)602 or a program loaded from a storage section 608 into a Random Access Memory (RAM) 603. In the RAM603, various programs and data necessary for system operation are also stored. The CPU 601, ROM 602, and RAM603 are connected to each other via a bus 604. An input/output (I/O) interface 605 is also connected to bus 604.
The following components are connected to the I/O interface 605: an input portion 606 including a keyboard, a mouse, and the like; an output portion 607 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage section 608 including a hard disk and the like; and a communication section 609 including a network interface card such as a LAN card, a modem, or the like. The communication section 609 performs communication processing via a network such as the internet. The driver 510 is also connected to the I/O interface 605 as needed. A removable medium 611 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 610 as necessary, so that a computer program read out therefrom is mounted in the storage section 608 as necessary.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The present application also provides a computer-readable storage medium, which may be the computer-readable storage medium included in one of the sound directional transmission systems in the above embodiments; or it may be a computer-readable storage medium that exists separately and is not built into the electronic device. A computer readable storage medium stores one or more programs for use by one or more processors in performing a method of sound directional transmission as described herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for directional sound transmission, comprising the steps of:
calling a camera to obtain an image of a sound receiving end in a preset range;
calibrating in advance, determining the range of face recognition, and performing face recognition on the image to determine the position coordinate of a receiving end in real time;
and adjusting a sound transmission end to play sound to the position coordinate, wherein the sound is preprocessed.
2. The method according to claim 1, wherein the plurality of sound transmission ends are provided, and each sound transmission end is provided with an image capturing device for adjusting the direction of the sound transmission end according to the position coordinate closest to the sound transmission end.
3. The method of claim 1, wherein the sound preprocessing comprises;
synthesizing the audio frequency by a phase control array method;
taking the wave source as the center of a circle, and drawing a semicircle with the same radius to obtain the wave front of each wave;
and according to the position coordinate of the receiving end, determining a main wave, and transmitting the main wave to the position coordinate direction.
4. A sound directional transmission system, comprising:
the image acquisition subsystem is used for calling the camera to acquire the image of the sound receiving end in the preset range;
the position coordinate determination subsystem is used for carrying out face recognition on the image so as to determine the position coordinate of the receiving end in real time;
and the adjusting subsystem is used for adjusting the sound transmission end to play sound to the position coordinate, wherein the sound is preprocessed.
5. The system according to claim 4, wherein the adjustment subsystem comprises a sound preprocessing module, the sound preprocessing module comprising:
an audio synthesizing unit for synthesizing audio by a phase control array method;
the wave front acquisition unit is used for drawing a semicircle by taking the same radius with the wave source as the center of a circle to obtain the wave front of each wave;
and the main wave transmission unit is used for determining a main wave according to the position coordinate of the receiving end and transmitting the main wave to the position coordinate direction.
6. A sound directional transmission system according to claim 5, wherein the sound transmission end comprises a plurality of fixed playing location enclosures, each of which is provided with a camera.
7. A sound directional transmission system according to claim 6, wherein the loudspeaker box in a specific position is controlled to play in the main gain direction.
8. A sound directional transmission system according to claim 6 or 7, wherein the enclosures defining the fixed playing location are arranged in two rows, the two rows facing the receiving end and being arranged at an acute angle.
9. An electronic device, comprising:
a processor, a memory for storing processor-executable instructions;
wherein the processor implements the method of any one of claims 1-3 by executing the executable instructions.
10. A computer readable storage medium having stored thereon computer instructions which, when executed by a processor, carry out the steps of the method according to any one of claims 1-3.
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| CN202110205186.4A CN113012677A (en) | 2021-02-24 | 2021-02-24 | Sound directional transmission method, system, electronic equipment and storage medium |
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| CN202110205186.4A CN113012677A (en) | 2021-02-24 | 2021-02-24 | Sound directional transmission method, system, electronic equipment and storage medium |
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|---|---|---|---|---|
| CN1774871A (en) * | 2003-04-15 | 2006-05-17 | 专利创投公司 | Directional speakers |
| JP2009231980A (en) * | 2008-03-19 | 2009-10-08 | Yamaha Corp | Speaker array system |
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