CN113990282B - Control method and device for conference audio with active noise reduction - Google Patents
Control method and device for conference audio with active noise reduction Download PDFInfo
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- CN113990282B CN113990282B CN202111219378.7A CN202111219378A CN113990282B CN 113990282 B CN113990282 B CN 113990282B CN 202111219378 A CN202111219378 A CN 202111219378A CN 113990282 B CN113990282 B CN 113990282B
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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
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
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- 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
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Abstract
The invention discloses a control method and device of an active noise reduction conference sound, wherein the control method comprises the steps of obtaining a playing signal of the conference sound, playing a corresponding mode based on an indoor environment where the conference sound is located, detecting first audio played by the conference sound, positioning noise audio, analyzing the noise audio, triggering an anti-noise module, forming anti-noise audio according to the noise audio, enabling the anti-noise audio to be opposite to the noise audio, reducing volume of the noise audio, collecting audio fluctuation of the first audio in the opposite process of the opposite noise audio and the opposite process of the noise audio, and switching the playing state of the conference sound based on the audio fluctuation of the first audio so as to regulate and control audio fluctuation of the first audio and an output curve between the anti-noise audio and the noise audio.
Description
Technical Field
The invention relates to the technical field of conference sound equipment, in particular to a method and a device for controlling active noise reduction conference sound equipment.
Background
The audio response is used for meeting rooms, meeting sound is formed according to the corresponding meeting environment, the meeting sound is played outwards according to the indication of a user, however, noise exists in the playing process of the meeting sound based on self factors or external factors, and the stability of the audio output outwards of the meeting sound is affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a method and a device for controlling an active noise reduction conference sound, which are used for realizing the positioning of noise sound through the detection of first sound frequency so as to trigger the active tracking and subsequent opposite-impact of noise, reducing the noise based on the opposite-impact of the opposite-noise sound frequency and the noise sound frequency, improving the hearing feeling of a listener, collecting the sound fluctuation of the first sound frequency in the opposite-impact process of the opposite-noise sound frequency and the noise sound frequency, and switching the playing state of the conference sound based on the sound fluctuation of the first sound frequency so as to regulate the sound fluctuation of the first sound frequency and the output curve between the opposite-noise sound frequency and the noise sound frequency, thereby ensuring that the stability of output of the first sound frequency can be kept in the opposite-impact process of the opposite-noise sound frequency and the noise sound frequency.
In order to solve the technical problems, the embodiment of the invention provides a control method of an active noise reduction conference sound, which comprises the steps of obtaining a playing signal of the conference sound, playing a corresponding mode based on an indoor environment where the conference sound is located, detecting a first audio played by the conference sound, positioning a noise audio, analyzing the noise audio, triggering an anti-noise module, forming the anti-noise audio according to the noise audio, wherein the anti-noise audio is opposite to the noise audio, reducing the volume of the noise audio, collecting audio fluctuation of the first audio in the opposite-noise audio and opposite-noise audio opposite-collision process, and switching the playing state of the conference sound based on the audio fluctuation of the first audio so as to regulate and control the audio fluctuation of the first audio and an output curve between the anti-noise audio and the noise audio.
The method comprises the steps of acquiring a playing signal of a conference sound, playing a corresponding mode based on an indoor environment where the conference sound is located, acquiring the surrounding environment of the conference sound, building an indoor environment map based on ultrasonic reflection, determining indoor surrounding intensity of each area in first audio based on the reflection intensity of ultrasonic waves, combining the indoor surrounding intensity with the indoor environment map to build an audio reverberation distribution map, acquiring the playing signal of the conference sound, simulating an audio transmission channel based on the first audio of the conference sound in the audio reverberation distribution map, positioning a listener in the indoor environment, and playing a corresponding mode based on the indoor environment where the conference sound is located to change the interaction direction of the audio transmission channel in the listener.
Optionally, the detecting the first audio played by the conference sound and locating the noise audio include collecting the first audio played by the conference sound and splitting the first audio into a playing channel and a noise channel, locating the noise audio based on the noise channel, expanding an anti-noise channel along a head end of the noise channel, wherein the anti-noise channel and the playing channel are independent of each other, collecting the noise audio based on the anti-noise channel and vibrating along with vibration of the noise channel.
The method comprises the steps of analyzing noise audio frequency, collecting vibration frequency of the noise channel, triggering the anti-noise module in the anti-noise channel if the vibration frequency of the noise channel exceeds preset vibration frequency, simulating a propagation path of the anti-noise audio frequency based on follow-up frequency of the anti-noise channel, conducting the anti-noise audio frequency to the noise channel through the anti-noise channel, capturing the propagation path of the noise audio frequency, and performing mutual opposite flushing of the anti-noise audio frequency and the noise audio frequency according to the propagation path of the noise audio frequency.
Optionally, the anti-noise module forms anti-noise audio according to the noise audio, the anti-noise audio and the noise audio are opposite to each other, and the volume of the noise audio is reduced, and the anti-noise module simulates the frequency band of the noise audio and performs reverse operation to simulate the simulated frequency band of the anti-noise audio, performs homogenization based on the simulated frequency band of the anti-noise audio, and forms the anti-noise audio, constructs an opposite-collision channel along the propagation path of the noise audio, and performs opposite-collision between the anti-noise audio and the noise audio in the opposite-collision channel, and reduces the volume of the noise audio.
Optionally, the collecting the audio fluctuation of the first audio in the opposite-noise audio and opposite-noise audio process includes continuously monitoring the vibration frequency of the opposite-noise channel and the vibration frequency of the noise channel in the opposite-noise audio and opposite-noise audio process, adjusting the opposite-noise audio if the vibration frequency of the opposite-noise channel and the vibration frequency of the noise channel are inconsistent, and performing trend regulation on the vibration frequency of the opposite-noise channel to the vibration frequency of the noise channel, triggering the monitoring of the playing channel if the vibration frequency of the opposite-noise channel and the vibration frequency of the noise channel are consistent, and collecting the audio fluctuation of the first audio based on the playing channel.
Optionally, the switching of the playing state of the conference sound based on the audio fluctuation of the first audio to regulate an output curve between the audio fluctuation of the first audio, the anti-noise audio and the noise audio includes performing fluctuation registration division based on the audio fluctuation of the first audio to form a first fluctuation level, a second fluctuation level and a third fluctuation level, switching the playing state of the conference sound based on the first fluctuation level, the second fluctuation level or the third fluctuation level to adjust hearing of a listener in the indoor environment, monitoring brain waves of the listener while enjoying the first audio, predicting dopamine content based on the brain waves, and performing further adjustment of the playing state based on the dopamine content of the listener.
In addition, the embodiment of the invention also provides a control device of the active noise-reducing conference sound, which comprises an acquisition module, a detection module, an analysis module, a counter-noise module and an acquisition module, wherein the acquisition module is used for acquiring a playing signal of the conference sound and playing a corresponding mode based on an indoor environment where the conference sound is located, the detection module is used for detecting a first audio played by the conference sound and positioning the noise audio, the analysis module is used for analyzing the noise audio and triggering the counter-noise module, the counter-noise module is used for forming counter-noise audio according to the noise audio, the counter-noise audio and the noise audio are opposite and reducing the volume of the noise audio, the acquisition module is used for acquiring audio fluctuation of the first audio in the opposite process of the counter-noise audio and the noise audio, and the switching module is used for switching the playing state of the conference sound based on the audio fluctuation of the first audio so as to regulate and control the output curve between the audio fluctuation of the first audio and the counter-noise audio and the noise audio.
In the embodiment of the invention, the method of the embodiment of the invention realizes the positioning of the noise audio through the detection of the first audio so as to trigger the active tracking and subsequent hedging of the noise, reduces the noise based on the mutual hedging between the anti-noise audio and the noise audio so as to improve the hearing feeling of a listener, collects the audio fluctuation of the first audio in the hedging process between the anti-noise audio and the noise audio, and switches the playing state of the conference sound based on the audio fluctuation of the first audio so as to regulate the audio fluctuation of the first audio and the output curve between the anti-noise audio and the noise audio, thereby ensuring that the output stability of the first audio can be kept in the hedging process between the anti-noise audio and the noise audio.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flow chart of a method for controlling an active noise reduction conference sound in an embodiment of the invention;
Fig. 2 is a schematic structural diagram of a control device of an active noise reduction conference sound in an embodiment of the present invention;
fig. 3 is a hardware diagram of an electronic device, according to an example embodiment.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1, fig. 1 is a flow chart illustrating a method for controlling an active noise reduction conference sound in an embodiment of the invention.
As shown in fig. 1, a method for controlling a conference sound with active noise reduction includes:
S11, acquiring a playing signal of a conference sound box, and playing in a corresponding mode based on an indoor environment in which the conference sound box is positioned;
In the implementation process of the invention, the specific steps include that the conference sound collects the surrounding environment of the conference sound, an indoor environment map is built based on ultrasonic reflection, indoor surrounding intensity of each area in first audio is determined based on the reflection intensity of ultrasonic waves, the indoor surrounding intensity is combined with the indoor environment map to build an audio reverberation distribution map, a playing signal of the conference sound is obtained, an audio propagation channel is simulated on the basis of the first audio of the conference sound in the audio reverberation distribution map, a listener in the indoor environment is positioned, and playing in a corresponding mode is carried out on the basis of the indoor environment in which the conference sound is positioned, so that the interaction direction of the audio propagation channel in the listener is changed.
The method comprises the steps of establishing a graph of indoor environment through ultrasonic reflection, establishing an audio reverberation distribution graph by simultaneously realizing the indoor surrounding strength of each area in a first audio, realizing the synchronization of multiple functions of ultrasonic reflection, simulating an audio propagation channel on the basis of the audio reverberation distribution graph of the first audio of a conference sound, positioning a listener in the indoor environment, and playing in a corresponding mode on the basis of the indoor environment in which the conference sound is positioned so as to change the interaction direction of the audio propagation channel on the listener, thereby improving the hearing feeling of the listener.
S12, detecting first audio played by the conference sound equipment and positioning noise audio;
In the implementation process of the invention, the method comprises the specific steps of collecting first audio played by the conference sound, dividing the first audio into a playing channel and a noise channel along the first audio, positioning the noise audio based on the noise channel, expanding an anti-noise channel along the head end of the noise channel, wherein the anti-noise channel and the playing channel are mutually independent, collecting the noise audio based on the anti-noise channel, and vibrating along with vibration of the noise channel.
The first audio is split into a playing channel and a noise channel based on the first audio, and independent processing of corresponding audio is carried out in the playing channel and the noise channel, and independent detection and processing of the noise audio are guaranteed by positioning the noise audio based on the noise channel. And acquiring the noise audio based on the anti-noise channel and vibrating along with the vibration of the noise channel so as to conveniently perform noise opposite impact on the noise audio.
S13, analyzing the noise audio frequency and triggering an anti-noise module;
In the implementation process of the invention, the method comprises the specific steps of analyzing the noise audio frequency, collecting the vibration frequency of the noise channel in the anti-noise channel, triggering the anti-noise module in the anti-noise channel if the vibration frequency of the noise channel exceeds the preset vibration frequency, simulating the propagation path of the anti-noise audio frequency based on the follow-up frequency of the anti-noise channel, conducting the anti-noise audio frequency to the noise channel through the anti-noise channel, capturing the propagation path of the noise audio frequency, and carrying out mutual opposite flushing of the anti-noise audio frequency and the noise audio frequency according to the propagation path of the noise audio frequency.
The anti-noise module simulates a propagation path of the anti-noise audio based on a follow-up frequency of the anti-noise channel, the anti-noise audio is conducted to the noise channel by the anti-noise channel, and captures the propagation path of the noise audio so as to perform noise elimination along the propagation path of the noise audio, and the noise elimination is realized based on mutual opposite of the anti-noise audio and the noise audio.
S14, an anti-noise module forms anti-noise audio according to the noise audio, and the anti-noise audio is opposite to the noise audio and reduces the volume of the noise audio;
In the implementation process of the invention, the specific steps include that the anti-noise module simulates the frequency band of the noise audio and performs reverse operation to simulate the simulated frequency band of the anti-noise audio, the method comprises the steps of homogenizing the simulated frequency band of the anti-noise audio and forming the anti-noise audio, constructing a hedging channel along the propagation path of the noise audio, and carrying out hedging on the anti-noise audio and the noise audio in the hedging channel and reducing the volume of the noise audio.
The anti-noise module simulates the frequency band of the noise audio frequency and performs reverse operation to ensure the opposite-impact fit degree of the anti-noise audio frequency to the noise audio frequency and construct an opposite-impact channel along the propagation path of the noise audio frequency, wherein the opposite-noise audio frequency and the noise audio frequency are opposite-impact in the opposite-impact channel, and the volume of the noise audio frequency is reduced.
S15, collecting audio fluctuation of the first audio in the opposite noise audio and opposite noise audio hedging process;
in the implementation process of the invention, the method comprises the specific steps of continuously monitoring the vibration frequency of the anti-noise channel and the vibration frequency of the noise channel in the opposite-flushing process of the anti-noise audio and the noise audio, adjusting the anti-noise audio and carrying out trend regulation on the vibration frequency of the noise channel when the vibration frequency of the anti-noise channel is inconsistent with the vibration frequency of the noise channel, triggering the monitoring of the playing channel when the vibration frequency of the anti-noise channel is consistent with the vibration frequency of the noise channel, and collecting the audio fluctuation of the first audio based on the playing channel.
The anti-noise audio frequency adjusting device comprises a noise channel, a noise frequency adjusting device and a noise frequency adjusting device, wherein the anti-noise audio frequency adjusting device is used for adjusting anti-noise audio frequency when the vibration frequency of the anti-noise channel is consistent with the vibration frequency of the noise channel, transmitting of the anti-noise audio frequency under the same vibration frequency and stable opposite-impact of the noise audio frequency are guaranteed, and collection stability of audio fluctuation of a first audio frequency is guaranteed.
In addition, based on the trend regulation and control of the vibration frequency of the anti-noise channel on the vibration frequency of the noise channel, the vibration frequency of the noise channel is regulated and controlled to be close to the vibration frequency of the anti-noise channel, and when the vibration frequency of the anti-noise channel and the vibration frequency of the noise channel are in the adjacent range, the vibration frequency of the noise channel is triggered to be reduced so as to match the vibration frequency of the noise channel and the vibration frequency of the anti-noise channel, frequent regulation of the vibration frequency of the anti-noise channel is reduced, and continuous consistency of the vibration frequency of the follow-up anti-noise channel and the vibration frequency of the noise channel is facilitated.
S16, switching the playing state of the conference sound based on the audio fluctuation of the first audio so as to regulate and control the output curves among the audio fluctuation of the first audio, the anti-noise audio and the noise audio.
In the implementation process of the invention, the method comprises the specific steps of carrying out fluctuation registration division based on the audio fluctuation of the first audio to form a first fluctuation level, a second fluctuation level and a third fluctuation level, switching the playing state of the conference sound according to the first fluctuation level, the second fluctuation level or the third fluctuation level so as to adjust the hearing of a listener in the indoor environment, monitoring the brain wave of the listener when enjoying the first audio, predicting the dopamine content based on the brain wave, and further adjusting the playing state based on the dopamine content of the listener.
The audio fluctuation of the first audio is used for carrying out fluctuation registration division, and the playing state is adjusted based on the dopamine content and the fluctuation level of the audience, so that the matching degree of the playing state and the audience is ensured.
In addition, the audio fluctuation of the first audio, the anti-noise audio and the noise audio are collected, a noise difference curve is built based on the anti-noise audio and the noise audio, a fluctuation curve corresponding to the audio fluctuation of the first audio is introduced into the noise difference curve, the noise difference curve is adjusted based on the corresponding fluctuation amount in the fluctuation curve to form the output curve, and internal feedback of the audio fluctuation of the first audio, the anti-noise audio and the noise audio is built based on the output curve, so that internal self-adjustment is achieved.
In the embodiment of the invention, the positioning of the noise audio is realized by detecting the first audio so as to trigger the active tracking and subsequent hedging of the noise, the noise is reduced based on the mutual hedging between the anti-noise audio and the noise audio so as to improve the hearing feeling of a listener, the audio fluctuation of the first audio is collected in the hedging process between the anti-noise audio and the noise audio, and the playing state of the conference sound is switched based on the audio fluctuation of the first audio so as to regulate and control the audio fluctuation of the first audio and the output curve between the anti-noise audio and the noise audio, thereby ensuring that the stability of the output of the first audio can be kept in the hedging process between the anti-noise audio and the noise audio.
Examples
Referring to fig. 2, fig. 2 is a schematic structural diagram of a control device for an active noise reduction conference sound in an embodiment of the invention.
As shown in fig. 2, a device for controlling an active noise-reducing conference sound, the device for controlling an active noise-reducing conference sound includes:
The acquisition module 21 is used for acquiring a playing signal of the conference sound equipment and playing a corresponding mode based on the indoor environment where the conference sound equipment is positioned;
The detection module 22 is used for detecting the first audio played by the conference sound and positioning noise audio;
The analysis module 23 is used for analyzing the noise audio frequency and triggering the anti-noise module;
A counter-punch block 24 for generating counter-noise audio from the noise audio, which counter-punches the noise audio and reduces the volume of the noise audio;
The acquisition module 25 is used for acquiring the audio fluctuation of the first audio frequency in the process of opposite noise audio frequency and opposite noise audio frequency;
And the switching module 26 is used for switching the playing state of the conference sound based on the audio fluctuation of the first audio so as to regulate and control the output curves among the audio fluctuation of the first audio, the anti-noise audio and the noise audio.
The invention provides a method and a device for controlling a conference sound with active noise reduction, wherein in the embodiment of the invention, the method is used for realizing the positioning of noise audio through the detection of first audio so as to trigger the active tracking and subsequent opposite-impact of noise, the noise reduction is carried out based on the opposite-impact of the opposite-noise audio and the noise audio so as to improve the hearing feeling of a listener, the audio fluctuation of the first audio is acquired in the opposite-noise audio and the opposite-impact process of the noise audio, and the playing state of the conference sound is switched based on the audio fluctuation of the first audio so as to regulate the audio fluctuation of the first audio and the output curve between the opposite-noise audio and the noise audio, so that the stability of the output of the first audio can be kept in the opposite-impact process of the opposite-noise audio and the noise audio.
Examples
Referring to fig. 3, an electronic device 40 according to this embodiment of the present invention is described below with reference to fig. 3. The electronic device 40 shown in fig. 3 is merely an example and should not be construed as limiting the functionality and scope of use of embodiments of the present invention.
As shown in fig. 3, the electronic device 40 is in the form of a general purpose computing device. The components of the electronic device 40 may include, but are not limited to, the at least one processing unit 41 described above, the at least one memory unit 42 described above, and a bus 43 connecting the various system components, including the memory unit 42 and the processing unit 41.
Wherein the storage unit stores program code that is executable by the processing unit 41 such that the processing unit 41 performs the steps according to various exemplary embodiments of the present invention described in the above-described "example methods" section of the present specification.
The memory unit 42 may include readable media in the form of volatile memory units, such as Random Access Memory (RAM) 421 and/or cache memory 422, and may further include Read Only Memory (ROM) 423.
The storage unit 42 may also include a program/utility 424 having a set (at least one) of program modules 425, such program modules 425 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
The bus 43 may be one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
Electronic device 40 may also communicate with one or more external devices (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with electronic device 40, and/or any device (e.g., router, modem, etc.) that enables electronic device 40 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 45. Also, electronic device 40 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 46. As shown in fig. 3, the network adapter 46 communicates with other modules of the electronic device 40 over the bus 43. It should be appreciated that although not shown in FIG. 3, other hardware and/or software modules may be used in connection with electronic device 40, including, but not limited to, microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program for instructing related hardware, and the program may be stored in a computer readable storage medium, and the storage medium may include a Read Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, etc. And which stores computer program instructions which, when executed by a computer, cause the computer to perform a method according to the above.
In addition, the method and apparatus for controlling the active noise reduction conference sound provided by the embodiments of the present invention are described in detail, and specific examples should be adopted to illustrate the principles and embodiments of the present invention, and the description of the above embodiments is only for helping to understand the method and core ideas of the present invention, and meanwhile, for those skilled in the art, according to the ideas of the present invention, there are changes in the specific embodiments and application ranges, so the disclosure should not be construed as limiting the present invention.
Claims (7)
1. The method for controlling the active noise reduction conference sound is characterized by comprising the following steps of:
acquiring a playing signal of a conference sound box, and playing a corresponding mode based on an indoor environment in which the conference sound box is positioned;
Detecting a first audio played by the conference sound equipment and positioning noise audio;
analyzing the noise audio frequency and triggering an anti-noise module;
the anti-noise module forms anti-noise audio according to the noise audio, and the anti-noise audio is opposite to the noise audio and reduces the volume of the noise audio;
During the opposite-noise audio and opposite-noise audio hedging process, collecting audio fluctuation of the first audio;
Switching the playing state of the conference sound based on the audio fluctuation of the first audio to regulate and control the output curve among the audio fluctuation of the first audio, the anti-noise audio and the noise audio;
The conference sound playing state is switched based on the audio fluctuation of the first audio to regulate and control an output curve among the audio fluctuation of the first audio, the anti-noise audio and the noise audio, the conference sound playing state comprises the steps of carrying out fluctuation registration division based on the audio fluctuation of the first audio to form a first fluctuation level, a second fluctuation level and a third fluctuation level, carrying out switching of the conference sound playing state according to the first fluctuation level, the second fluctuation level or the third fluctuation level to adjust hearing of a listener in the indoor environment, monitoring brain waves of the listener when enjoying the first audio, predicting dopamine content based on the brain waves, and carrying out further adjustment of the conference sound playing state based on the dopamine content of the listener.
2. The method for controlling a conference sound box with active noise reduction according to claim 1, wherein the step of obtaining a playing signal of the conference sound box and playing in a corresponding mode based on an indoor environment in which the conference sound box is located comprises:
the conference sound equipment collects the surrounding environment of the conference sound equipment and establishes an indoor environment map based on ultrasonic reflection;
Determining indoor surrounding intensity of each region in the first audio based on the reflection intensity of the ultrasonic wave;
combining each indoor surrounding intensity with the indoor environment map to construct an audio reverberation profile;
acquiring a playing signal of a conference sound;
simulating an audio propagation channel in the audio reverberation profile based on the first audio of the conference sound;
And positioning a listener in the indoor environment, and playing in a corresponding mode based on the indoor environment in which the conference sound is positioned so as to change the interaction direction of the audio propagation channel in the listener.
3. The method for controlling an active noise reduction conference sound according to claim 1, wherein detecting the first audio played by the conference sound and locating the noise audio comprises:
collecting first audio played by the conference sound equipment, and splitting the first audio into a playing channel and a noise channel along the first audio;
locating the noise audio based on the noise channel;
Expanding an anti-noise channel along the head end of the noise channel, wherein the anti-noise channel and the playing channel are mutually independent;
the noise audio frequency is collected based on the anti-noise channel and vibrates along with the vibration of the noise channel.
4. The method for controlling an active noise reduction conference sound according to claim 3, wherein said analyzing the noise audio and triggering an anti-noise module comprises:
Analyzing the noise audio frequency, and collecting the vibration frequency of the noise channel in the anti-noise channel;
Triggering the anti-noise module in the anti-noise channel if the vibration frequency of the noise channel exceeds a preset vibration frequency;
the anti-noise module simulates a propagation path of the anti-noise audio based on a follow-up frequency of the anti-noise channel;
the anti-noise audio is conducted to the noise channel by the anti-noise channel and captures the propagation path of the noise audio;
the mutual opposite of the anti-noise audio and the noise audio is performed according to the propagation path of the noise audio.
5. The method of claim 4, wherein the anti-noise module forms an anti-noise audio based on the noise audio, the anti-noise audio being opposite to the noise audio, and reduces the volume of the noise audio, comprising:
the anti-noise module simulates the frequency band of the noise audio frequency and performs reverse operation to simulate the simulated frequency band of the anti-noise audio frequency;
homogenizing based on the analog frequency band of the anti-noise audio and forming the anti-noise audio;
constructing an opposite-impact channel along the propagation path of the noise audio;
And the anti-noise audio frequency and the noise audio frequency are opposite to each other in the opposite-punching channel, and the volume of the noise audio frequency is reduced.
6. The method for controlling an active noise reduction conference sound according to claim 5, wherein the step of collecting the audio fluctuation of the first audio during the opposite-noise audio and the opposite-noise audio, comprises:
Continuously monitoring the vibration frequency of the anti-noise channel and the vibration frequency of the noise channel in the opposite-flushing process of the anti-noise audio and the noise audio;
If the vibration frequency of the anti-noise channel is inconsistent with the vibration frequency of the noise channel, adjusting the anti-noise audio frequency, and performing trend regulation and control on the vibration frequency of the noise channel by the vibration frequency of the anti-noise channel;
Triggering monitoring of the playing channel when the vibration frequency of the anti-noise channel is consistent with the vibration frequency of the noise channel;
and acquiring audio fluctuation of the first audio based on the playing channel.
7. The utility model provides a controlling means of active meeting stereo set of making an uproar falls which characterized in that, the controlling means of active meeting stereo set of making an uproar falls includes:
The acquisition module is used for acquiring a playing signal of the conference sound equipment and playing a corresponding mode based on the indoor environment where the conference sound equipment is positioned;
the detection module is used for detecting the first audio played by the conference sound equipment and positioning noise audio;
The analysis module is used for analyzing the noise audio frequency and triggering the anti-noise module;
the opposite-punching die block is used for forming opposite-noise audio according to the noise audio by the opposite-noise module, and the opposite-noise audio is opposite to the noise audio in a punching way and reduces the volume of the noise audio;
The acquisition module is used for acquiring the audio fluctuation of the first audio in the opposite noise audio and opposite noise audio hedging process;
the switching module is used for switching the playing state of the conference sound based on the audio fluctuation of the first audio so as to regulate and control the audio fluctuation of the first audio, the output curve between the anti-noise audio and the noise audio;
The conference sound playing state is switched based on the audio fluctuation of the first audio to regulate and control an output curve among the audio fluctuation of the first audio, the anti-noise audio and the noise audio, the conference sound playing state comprises the steps of carrying out fluctuation registration division based on the audio fluctuation of the first audio to form a first fluctuation level, a second fluctuation level and a third fluctuation level, carrying out switching of the conference sound playing state according to the first fluctuation level, the second fluctuation level or the third fluctuation level to adjust hearing of a listener in the indoor environment, monitoring brain waves of the listener when enjoying the first audio, predicting dopamine content based on the brain waves, and carrying out further adjustment of the conference sound playing state based on the dopamine content of the listener.
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