Control method and device for conference audio with active noise reduction

Abstract

The present invention discloses a control method and device for a conference audio system with active noise reduction, which includes: obtaining a playback signal of the conference audio system, and playing a corresponding mode based on the indoor environment in which the conference audio system is located; detecting a first audio played by the conference audio system, and locating the noise audio; parsing the noise audio, and triggering an anti-noise module; the anti-noise module forms an anti-noise audio system based on the noise audio system, and the anti-noise audio system offsets the noise audio system and reduces the volume of the noise audio system; in the process of offsetting the anti-noise audio system and the noise audio system, collecting audio fluctuations of the first audio system; switching the playback state of the conference audio system based on the audio fluctuations of the first audio system, so as to regulate the audio fluctuations of the first audio system, and the output curve between the anti-noise audio system and the noise audio system.

Description

Technical Field

[0001] The present invention relates to the technical field of conference audio, and in particular to a control method and device for conference audio with active noise reduction. Background Art

[0002] The audio system is used in conference rooms and forms conference audio according to the corresponding conference environment. The conference audio system plays audio externally according to the user's instructions. However, the conference audio system generates noise during the playback process due to its own or external factors, which affects the stability of the audio output of the conference audio system. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art. The present invention provides a control method and device for a conference audio system with active noise reduction. The noise audio is positioned by detecting the first audio so as to trigger 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 to improve the audience's auditory experience. In the hedging process between the anti-noise audio and the noise audio, the audio fluctuation of the first audio is collected; and based on the audio fluctuation of the first audio, the playback state of the conference audio is switched to adjust the audio fluctuation of the first audio and the output curve between the anti-noise audio and the noise audio to ensure that the first audio can maintain output stability during the hedging process between the anti-noise audio and the noise audio.

[0004] In order to solve the above technical problems, an embodiment of the present invention provides a control method for a conference audio system with active noise reduction, comprising: obtaining a playback signal of the conference audio system, and playing a corresponding mode based on the indoor environment in which the conference audio system is located; detecting the first audio played by the conference audio system, and locating the noise audio; parsing the noise audio, and triggering an anti-noise module; the anti-noise module forms an anti-noise audio system based on the noise audio, and the anti-noise audio system offsets the noise audio system and reduces the volume of the noise audio system; in the process of offsetting the anti-noise audio system and the noise audio system, collecting audio fluctuations of the first audio system; switching the playback state of the conference audio system based on the audio fluctuations of the first audio system, so as to regulate the audio fluctuations of the first audio system, and the output curve between the anti-noise audio system and the noise audio system.

[0005] Optionally, the process of obtaining the playback signal of the conference audio system and performing playback in a corresponding mode based on the indoor environment in which the conference audio system is located includes: the conference audio system collects information about its surrounding environment and establishes an indoor environment map based on ultrasonic reflection; determines the indoor surround intensity of each area in the first audio based on the reflection intensity of the ultrasonic wave; combines each of the indoor surround intensities with the indoor environment map to construct an audio echo distribution map; obtains the playback signal of the conference audio system; simulates an audio propagation channel based on the first audio of the conference audio system and the audio echo distribution map; locates the audience in the indoor environment, and performs playback in a corresponding mode based on the indoor environment in which the conference audio system is located to change the interaction direction of the audio propagation channel with the audience.

[0006] Optionally, the detecting of the first audio played by the conference audio system and the locating of the noise audio includes: collecting the first audio played by the conference audio system and splitting the first audio into a playback channel and a noise channel; locating the noise audio based on the noise channel; extending an anti-noise channel along the head end of the noise channel, wherein the anti-noise channel and the playback channel are independent of each other; collecting the noise audio based on the anti-noise channel, and vibrating along with the vibration of the noise channel.

[0007] Optionally, analyzing the noise audio and triggering the anti-noise module include: analyzing the noise audio and collecting the vibration frequency of the noise channel in the anti-noise channel; if the vibration frequency of the noise channel exceeds a preset vibration frequency, triggering the anti-noise module in the anti-noise channel; the anti-noise module simulates the propagation path of the anti-noise audio based on the follow-up frequency of the anti-noise channel; the anti-noise audio is transmitted from the anti-noise channel to the noise channel and the propagation path of the noise audio is captured; and the anti-noise audio and the noise audio are offset against each other according to the propagation path of the noise audio.

[0008] Optionally, the anti-noise module forms an anti-noise audio based on the noise audio, which offsets the noise audio and reduces the volume of the noise audio, including: the anti-noise module simulates based on the frequency band of the noise audio, and performs reverse operation to simulate the simulated frequency band of the anti-noise audio; homogenizes based on the simulated frequency band of the anti-noise audio and forms the anti-noise audio; constructs a hedging channel along the propagation path of the noise audio; the anti-noise audio offsets the noise audio in the hedging channel and reduces the volume of the noise audio.

[0009] Optionally, during the offset process of the anti-noise audio and the noise audio, the audio fluctuation of the first audio is collected, including: during the offset process of the anti-noise audio and the noise audio, the vibration frequency of the anti-noise channel and the vibration frequency of the noise channel are continuously monitored; if the vibration frequency of the anti-noise channel and the vibration frequency of the noise channel are inconsistent, the anti-noise audio is adjusted, and the vibration frequency of the anti-noise channel is trend-controlled with respect to the vibration frequency of the noise channel; when the vibration frequency of the anti-noise channel and the vibration frequency of the noise channel are consistent, the monitoring of the playback channel is triggered; and the audio fluctuation of the first audio is collected based on the playback channel.

[0010] Optionally, the playback state of the conference audio system is switched based on the audio fluctuation of the first audio to regulate the audio fluctuation of the first audio, the output curve between the anti-noise audio and the noise audio, including: performing fluctuation registration and 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 playback state of the conference audio system according to the first fluctuation level, the second fluctuation level or the third fluctuation level to adjust the hearing of the audience in the indoor environment; monitoring the brain waves of the audience when enjoying the first audio, and predicting the dopamine content based on the brain waves; and further adjusting the playback state based on the dopamine content of the audience.

[0011] In addition, an embodiment of the present invention further provides a control device for a conference audio system with active noise reduction, and the control device for a conference audio system with active noise reduction includes: an acquisition module: used to acquire the playback signal of the conference audio system, and play the corresponding mode based on the indoor environment in which the conference audio system is located; a detection module: used to detect the first audio played by the conference audio system, and locate the noise audio; an analysis module: used to analyze the noise audio, and trigger an anti-noise module; an offset module: used for the anti-noise module to form an anti-noise audio according to the noise audio, and the anti-noise audio offsets the noise audio and reduces the volume of the noise audio; an acquisition module: used to acquire the audio fluctuation of the first audio system during the offset process between the anti-noise audio system and the noise audio system; a switching module: used to switch the playback state of the conference audio system based on the audio fluctuation of the first audio system, so as to regulate the audio fluctuation of the first audio system, the output curve between the anti-noise audio system and the noise audio system.

[0012] In an embodiment of the present invention, through the method in the embodiment of the present invention, the noise audio is positioned by detecting the first audio, so as to trigger active tracking and subsequent hedging of the noise, and based on the mutual hedging between the anti-noise audio and the noise audio, the noise is reduced to improve the audience's auditory experience, and in the hedging process between the anti-noise audio and the noise audio, the audio fluctuation of the first audio is collected; and based on the audio fluctuation of the first audio, the playback state of the conference audio is switched to adjust the audio fluctuation of the first audio and the output curve between the anti-noise audio and the noise audio to ensure that the first audio can maintain output stability during the hedging process between the anti-noise audio and the noise audio. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 is a flow chart of a method for controlling a conference audio system with active noise reduction in an embodiment of the present invention;

[0015] Figure 2 Schematic diagram of the structure of a control device for conference audio with active noise reduction in an embodiment of the present invention;

[0016] Figure 3 The figure is a hardware diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example

[0019] See also Figure 1 , Figure 1 It is a flowchart of a method for controlling a conference audio system with active noise reduction in an embodiment of the present invention.

[0020] like Figure 1 As shown, a control method for conference audio with active noise reduction, the method comprising:

[0021] S11: Acquire a playback signal of the conference audio system, and perform playback in a corresponding mode based on the indoor environment in which the conference audio system is located;

[0022] In the specific implementation process of the present invention, the specific steps may be: the conference audio system collects its surrounding environment and establishes an indoor environment map based on ultrasonic reflection; determines the indoor surround intensity of each area in the first audio based on the reflection intensity of the ultrasonic wave; combines each of the indoor surround intensities with the indoor environment map to construct an audio echo distribution map; obtains the playback signal of the conference audio system; simulates the audio propagation channel based on the first audio of the conference audio system in the audio echo distribution map; locates the audience in the indoor environment, and plays the corresponding mode based on the indoor environment where the conference audio system is located to change the interaction direction of the audio propagation channel with the audience.

[0023] Among them, the indoor environment is mapped through ultrasonic reflection to form an indoor environment map, and at the same time, the indoor surround intensity of each area in the first audio is determined to construct an audio echo distribution map, and multiple functions of ultrasonic reflection are synchronized. The audio propagation channel is simulated based on the first audio of the conference audio and the audio echo distribution map; the audience in the indoor environment is located, and the corresponding mode is played based on the indoor environment of the conference audio to change the interaction direction of the audio propagation channel and the audience, thereby improving the audience's auditory experience.

[0024] S12: Detecting the first audio played by the conference audio system and locating the noise audio;

[0025] In the specific implementation process of the present invention, the specific steps may be: collecting the first audio played by the conference audio system, and splitting the first audio into a playback channel and a noise channel; locating the noise audio based on the noise channel; extending an anti-noise channel along the head end of the noise channel, and the anti-noise channel and the playback channel are independent of each other; collecting the noise audio based on the anti-noise channel, and vibrating with the vibration of the noise channel.

[0026] The first audio is split into a playback channel and a noise channel, and the corresponding audio is processed separately in the playback channel and the noise channel. The noise audio is located based on the noise channel to ensure the separate detection and processing of the noise audio. An anti-noise channel is extended along the head end of the noise channel, and the anti-noise channel and the playback channel are independent of each other; the noise audio is collected based on the anti-noise channel, and vibrates with the vibration of the noise channel, so as to offset the noise audio.

[0027] S13: Analyze the noise audio and trigger an anti-noise module;

[0028] In the specific implementation process of the present invention, the specific steps may be: analyzing the noise audio and collecting the vibration frequency of the noise channel in the anti-noise channel; if the vibration frequency of the noise channel exceeds the preset vibration frequency, the anti-noise module in the anti-noise channel is triggered; the anti-noise module simulates the propagation path of the anti-noise audio based on the follow-up frequency of the anti-noise channel; the anti-noise audio is transmitted from the anti-noise channel to the noise channel, and the propagation path of the noise audio is captured; according to the propagation path of the noise audio, the anti-noise audio and the noise audio are offset against each other.

[0029] Among them, the anti-noise module simulates the propagation path of the anti-noise audio based on the follow-up frequency of the anti-noise channel. The anti-noise audio is transmitted from the anti-noise channel to the noise channel, and the propagation path of the noise audio is captured to perform noise elimination along the propagation path of the noise audio, and noise elimination is achieved based on the mutual offset of the anti-noise audio and the noise audio.

[0030] S14: the anti-noise module generates an anti-noise audio according to the noise audio, wherein the anti-noise audio counteracts the noise audio and reduces the volume of the noise audio;

[0031] In the specific implementation process of the present invention, the specific steps may be: the anti-noise module simulates based on the frequency band of the noise audio, and performs reverse operation to simulate the simulated frequency band of the anti-noise audio; homogenizes based on the simulated frequency band of the anti-noise audio, and forms the anti-noise audio; constructs a hedging channel along the propagation path of the noise audio; the anti-noise audio and the noise audio are hedged in the hedging channel, and the volume of the noise audio is reduced.

[0032] Among them, the anti-noise module simulates based on the frequency band of the noise audio and performs reverse operation to ensure the hedging fit of the anti-noise audio to the noise audio, and constructs a hedging channel along the propagation path of the noise audio; the anti-noise audio and the noise audio are hedged in the hedging channel and the volume of the noise audio is reduced.

[0033] S15: In the process of the counteraction between the anti-noise audio and the noise audio, collecting audio fluctuations of the first audio;

[0034] In the specific implementation process of the present invention, the specific steps include: during the offset process of the anti-noise audio and the noise audio, continuously monitoring the vibration frequency of the anti-noise channel and the vibration frequency of the noise channel; if the vibration frequency of the anti-noise channel and the vibration frequency of the noise channel are inconsistent, adjusting the anti-noise audio, and trending the vibration frequency of the anti-noise channel to the vibration frequency of the noise channel; when the vibration frequency of the anti-noise channel and the vibration frequency of the noise channel are consistent, triggering the monitoring of the playback channel; and collecting the audio fluctuation of the first audio based on the playback channel.

[0035] Among them, it is ensured that the anti-noise audio is adjusted when the vibration frequency of the anti-noise channel is consistent with the vibration frequency of the noise channel, that the anti-noise audio is transmitted at the same vibration frequency and stably offsets the noise audio, and that the collection stability of the audio fluctuations of the first audio is ensured.

[0036] In addition, based on the tendency of the vibration frequency of the anti-noise channel to regulate the vibration frequency of the noise channel, the vibration frequency of the noise channel is adjusted to be close to the vibration frequency of the anti-noise channel, and when the vibration frequencies of the anti-noise channel and the noise channel are in a nearby range, the vibration frequency of the noise channel is triggered to be down-regulated to match the vibration frequencies of the noise channel and the anti-noise channel, thereby reducing the frequent adjustment of the vibration frequency of the anti-noise channel and facilitating the continuous consistency of the subsequent vibration frequencies of the anti-noise channel and the noise channel.

[0037] S16: Switching the playing state of the conference audio system based on the audio fluctuation of the first audio system to adjust the audio fluctuation of the first audio system and the output curve between the anti-noise audio system and the noise audio system.

[0038] In the specific implementation process of the present invention, the specific steps include: performing fluctuation registration and 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 playback state of the conference audio according to the first fluctuation level, the second fluctuation level or the third fluctuation level to adjust the hearing of the audience in the indoor environment; monitoring the brain waves of the audience when enjoying the first audio, and predicting the dopamine content based on the brain waves; and further adjusting the playback state based on the dopamine content of the audience.

[0039] Among them, fluctuation registration and division are performed based on the audio fluctuation of the first audio, and the playback state is adjusted based on the dopamine content and fluctuation level of the audience to ensure the fit between the playback state and the audience.

[0040] In addition, the audio fluctuations of the first audio, the anti-noise audio and the noise audio are collected; a noise difference curve is established based on the anti-noise audio and the noise audio; a fluctuation curve corresponding to the audio fluctuations 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; internal feedback of the audio fluctuations of the first audio, the anti-noise audio and the noise audio is established based on the output curve, thereby realizing internal self-adjustment.

[0041] In an embodiment of the present invention, the noise audio is located by detecting the first audio, so as to trigger active tracking and subsequent hedging of the noise. Based on the mutual hedging between the anti-noise audio and the noise audio, the noise is reduced to improve the audience's auditory experience. In the hedging process between the anti-noise audio and the noise audio, the audio fluctuation of the first audio is collected; and based on the audio fluctuation of the first audio, the playback state of the conference audio is switched to adjust the audio fluctuation of the first audio and the output curve between the anti-noise audio and the noise audio to ensure that the first audio can maintain output stability during the hedging process between the anti-noise audio and the noise audio.

[0042] Example

[0043] See also Figure 2 , Figure 2 It is a schematic diagram of the structure of a control device for conference audio with active noise reduction in an embodiment of the present invention.

[0044] like Figure 2 As shown, a control device for conference audio with active noise reduction, the control device for conference audio with active noise reduction includes:

[0045] Acquisition module 21: used to acquire the playback signal of the conference audio, and play the corresponding mode based on the indoor environment where the conference audio is located;

[0046] Detection module 22: used to detect the first audio played by the conference audio system and locate the noise audio;

[0047] Analysis module 23: used to analyze the noise audio and trigger the anti-noise module;

[0048] Countermeasure module 24: used for the anti-noise module to form an anti-noise audio according to the noise audio, the anti-noise audio counteracts the noise audio and reduces the volume of the noise audio;

[0049] Collection module 25: used for collecting audio fluctuations of the first audio during the offset process between the anti-noise audio and the noise audio;

[0050] The switching module 26 is used to switch the playing state of the conference audio system based on the audio fluctuation of the first audio system, so as to adjust the audio fluctuation of the first audio system, the output curve between the anti-noise audio system and the noise audio system.

[0051] The present invention provides a control method and device for conference audio with active noise reduction. In an embodiment of the present invention, through the method in the embodiment of the present invention, the noise audio is located by detecting the first audio, so as to trigger active tracking and subsequent hedging of the noise. Based on the mutual hedging between the anti-noise audio and the noise audio, the noise is reduced to improve the audience's auditory experience, and in the hedging process between the anti-noise audio and the noise audio, the audio fluctuation of the first audio is collected; and based on the audio fluctuation of the first audio, the playback state of the conference audio is switched to adjust the audio fluctuation of the first audio and the output curve between the anti-noise audio and the noise audio, so as to ensure that the first audio can maintain output stability during the hedging process between the anti-noise audio and the noise audio.

[0052] Example

[0053] See also Figure 3 , refer to the following Figure 3 The electronic device 40 according to this embodiment of the present invention will be described. Figure 3 The electronic device 40 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0054] like Figure 3 As shown, the electronic device 40 is in the form of a general computing device. The components of the electronic device 40 may include but are not limited to: at least one processing unit 41, at least one storage unit 42, and a bus 43 connecting different system components (including the storage unit 42 and the processing unit 41).

[0055] The storage unit stores program codes, which can be executed by the processing unit 41, so that the processing unit 41 executes the steps according to various exemplary embodiments of the present invention described in the above “Embodiment Method” section of this specification.

[0056] The storage unit 42 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 421 and / or a cache memory unit 422 , and may further include a read-only memory unit (ROM) 423 .

[0057] 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 of which or some combination may include an implementation of a network environment.

[0058] Bus 43 may represent 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.

[0059] The electronic device 40 may also communicate with one or more external devices (e.g., keyboards, pointing devices, Bluetooth devices, etc.), one or more devices that enable a user to interact with the electronic device 40, and / or any device that enables the electronic device 40 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 45. Furthermore, the electronic device 40 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 46. Figure 3 As shown, the network adapter 46 communicates with other modules of the electronic device 40 via the bus 43. It should be understood that although Figure 3 Not shown, other hardware and / or software modules may be used in conjunction with the 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.

[0060] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, including several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the implementation of the present disclosure.

[0061] Those skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the storage medium can include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc. In addition, it stores computer program instructions, and when the computer program instructions are executed by a computer, the computer executes the above method.

[0062] In addition, the control method and device for the active noise reduction conference audio system provided by the embodiment of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A control method for conference audio with active noise reduction, characterized in that: include: Acquire a playback signal of the conference audio system, and play the corresponding mode based on the indoor environment in which the conference audio system is located; Detecting the first audio played by the conference audio system and locating the noise audio; Analyze the noise audio and trigger the anti-noise module; The anti-noise module generates an anti-noise audio according to the noise audio, wherein the anti-noise audio counteracts the noise audio and reduces the volume of the noise audio; In the process of the counteraction between the anti-noise audio and the noise audio, collecting the audio fluctuation of the first audio; Switching the playing state of the conference audio based on the audio fluctuation of the first audio to adjust the audio fluctuation of the first audio, the output curve between the anti-noise audio and the noise audio; Among them, the playing state of the conference audio is switched based on the audio fluctuation of the first audio to regulate the audio fluctuation of the first audio, the output curve between the anti-noise audio and the noise audio, including: performing fluctuation registration and 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 audio according to the first fluctuation level, the second fluctuation level or the third fluctuation level to adjust the hearing of the audience in the indoor environment; monitoring the brain waves of the audience when enjoying the first audio, and predicting the dopamine content based on the brain waves; and further adjusting the playing state based on the dopamine content of the audience.

2. The control method of active noise reduction conference audio according to claim 1, characterized in that: The obtaining of the playback signal of the conference audio system and performing playback in a corresponding mode based on the indoor environment where the conference audio system is located includes: The conference audio system collects information about its surrounding environment and creates an indoor environment map based on ultrasonic reflections; Determine the indoor surround intensity of each area in the first audio based on the reflection intensity of the ultrasonic wave; Combining each of the indoor surround intensities with the indoor environment map to construct an audio reverberation distribution map; Get the playback signal of the conference audio system; Simulating an audio propagation channel based on the first audio of the conference audio system in the audio reverberation distribution diagram; The listeners in the indoor environment are located, and corresponding modes are played based on the indoor environment where the conference audio is located, so as to change the interaction direction between the audio propagation channel and the listeners.

3. The control method of active noise reduction conference audio according to claim 1, characterized in that: The detecting the first audio played by the conference audio system and locating the noise audio includes: Collecting the first audio played by the conference audio system, and splitting the first audio into a play channel and a noise channel; localizing the noise audio based on the noise channel; An anti-noise channel is extended along the head end of the noise channel, and the anti-noise channel and the playback channel are independent of each other; The noise audio is collected based on the anti-noise channel and vibrates along with the vibration of the noise channel.

4. The control method of active noise reduction conference audio according to claim 3, characterized in that: The step of analyzing the noise audio and triggering the anti-noise module includes: Analyze the noise audio, and collect the vibration frequency of the noise channel in the anti-noise channel; If the vibration frequency of the noise channel exceeds the preset vibration frequency, the anti-noise module in the anti-noise channel is triggered; The anti-noise module simulates the propagation path of the anti-noise audio based on the follow-up frequency of the anti-noise channel; The anti-noise audio is transmitted from the anti-noise channel to the noise channel, and the propagation path of the noise audio is captured; The anti-noise audio and the noise audio are offset against each other according to the propagation path of the noise audio.

5. The control method of conference audio with active noise reduction according to claim 4, characterized in that: The anti-noise module forms an anti-noise audio according to the noise audio, the anti-noise audio counteracts the noise audio and reduces the volume of the noise audio, including: The anti-noise module simulates based on the frequency band of the noise audio and performs a reverse operation to simulate the simulated frequency band of the anti-noise audio; Performing homogenization based on the analog 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; The anti-noise audio and the noise audio are offset in the offset channel, and the volume of the noise audio is reduced.

6. The control method of active noise reduction conference audio system according to claim 5, characterized in that: In the process of the counteraction between the anti-noise audio and the noise audio, collecting the audio fluctuation of the first audio includes: During the offset process between the anti-noise audio and the noise audio, the vibration frequency of the anti-noise channel and the vibration frequency of the noise channel are continuously monitored; If the vibration frequency of the anti-noise channel is inconsistent with the vibration frequency of the noise channel, the anti-noise audio is adjusted, and the vibration frequency of the anti-noise channel is oriented to the vibration frequency of the noise channel; When the vibration frequency of the anti-noise channel is consistent with the vibration frequency of the noise channel, triggering monitoring of the playback channel; Audio fluctuations of the first audio are collected based on the playback channel.

7. A control device for conference audio with active noise reduction, characterized in that: The control device of the conference audio system with active noise reduction comprises: Acquisition module: used to acquire the playback signal of the conference audio, and play the corresponding mode based on the indoor environment where the conference audio is located; Detection module: used to detect the first audio played by the conference audio system and locate the noise audio; Analysis module: used to analyze the noise audio and trigger the anti-noise module; Countermeasure module: used for the anti-noise module to form an anti-noise audio according to the noise audio, the anti-noise audio counteracts the noise audio and reduces the volume of the noise audio; A collection module: used for collecting audio fluctuations of the first audio during the offset process of the anti-noise audio and the noise audio; A switching module: used for switching the playing state of the conference audio based on the audio fluctuation of the first audio, so as to adjust the audio fluctuation of the first audio, the output curve between the anti-noise audio and the noise audio; Among them, the playing state of the conference audio is switched based on the audio fluctuation of the first audio to regulate the audio fluctuation of the first audio, the output curve between the anti-noise audio and the noise audio, including: performing fluctuation registration and 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 audio according to the first fluctuation level, the second fluctuation level or the third fluctuation level to adjust the hearing of the audience in the indoor environment; monitoring the brain waves of the audience when enjoying the first audio, and predicting the dopamine content based on the brain waves; and further adjusting the playing state based on the dopamine content of the audience.

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