CN115472173A - Noise gate setting method and audio processing system - Google Patents

Noise gate setting method and audio processing system Download PDF

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Publication number
CN115472173A
CN115472173A CN202110651039.XA CN202110651039A CN115472173A CN 115472173 A CN115472173 A CN 115472173A CN 202110651039 A CN202110651039 A CN 202110651039A CN 115472173 A CN115472173 A CN 115472173A
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China
Prior art keywords
noise
audio processing
intensity
processing device
threshold value
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CN202110651039.XA
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Chinese (zh)
Inventor
夏鑫
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
Guangzhou Shirui Electronics Co Ltd
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Guangzhou Shiyuan Electronics Thecnology Co Ltd
Guangzhou Shirui Electronics Co Ltd
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Priority to CN202110651039.XA priority Critical patent/CN115472173A/en
Publication of CN115472173A publication Critical patent/CN115472173A/en
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • G10L25/84—Detection of presence or absence of voice signals for discriminating voice from noise
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • G10L2025/783—Detection of presence or absence of voice signals based on threshold decision
    • G10L2025/786—Adaptive threshold

Abstract

The application provides a setting method and an audio processing system of a noise gate, the noise intensity of the environment where the audio processing device is located is actively determined, and the threshold value of the noise gate is set under the condition that manual setting is not needed, so that the audio processing system can be enabled to have the noise gate for filtering the environmental noise, different environmental noises are filtered according to the intensity of different environmental noises, the required manpower, debugging, maintenance and use costs of the audio processing system when the audio processing system is used are reduced, and the user experience of the audio processing system is greatly improved.

Description

Noise gate setting method and audio processing system
Technical Field
The present application relates to the field of electronic technologies, and in particular, to a method for setting a noise gate and an audio processing system.
Background
The audio processing system can be usually set up in scenes such as meeting, teaching, gathers the sound signal of the speaker when speaking through the microphone to by audio processing device to the back is handled to sound signal, play through the speaker, let other personnel in wider range also can hear the sound signal including the speech content of the speaker.
In order to eliminate the influence of noise on the sound signal, some audio processing devices are further provided with a noise gate, so that the audio processing device can filter the sound signal to be played through a threshold value of the noise gate, filter a part of the sound signal lower than the threshold value, and play only a part of the sound signal higher than the threshold value, so as to improve the playing effect on the sound signal.
However, in the prior art, a noise gate needs to be tested and debugged in a manual field when being set, so that the audio processing system is relatively complex to use, and the use cost is relatively high.
Disclosure of Invention
The application provides a setting method of a noise gate and an audio processing system, which are used for solving the technical problems that the audio processing system is complex to use and high in use cost.
The first aspect of the present application provides a method for setting a noise gate, including: determining the noise intensity of the environment where the audio processing device is located; and setting a threshold value of a noise gate of the audio processing device according to the noise intensity.
In an embodiment of the first aspect of the present application, the setting a threshold value of a noise gate of the audio processing apparatus according to the noise strength includes: determining a first threshold value according to the noise intensity; setting a threshold value of a noise gate of the audio processing apparatus to the first threshold value.
In an embodiment of the first aspect of the present application, the determining the noise intensity of the environment where the audio processing apparatus is located includes: and receiving a noise signal of the environment where the detection device is located from the detection device, and calculating the noise intensity according to the noise signal.
In an embodiment of the first aspect of the present application, the determining a noise intensity of an environment in which the audio processing apparatus is located includes: receiving the noise intensity from the detection device; wherein the noise strength is determined by the detection device from an ambient noise signal.
In an embodiment of the first aspect of the present application, the determining the first threshold value according to the noise strength includes: taking the noise intensity as the first threshold value; or, the first threshold value is obtained after the noise intensity is added to a preset value.
In an embodiment of the first aspect of the present application, the calculating the noise strength according to the noise signal includes: calculating the average value of the intensity of the noise signal in the first time period, wherein the average value is the noise intensity; or calculating the maximum value of the intensity of the noise signal in the first time period, wherein the maximum value is the noise intensity.
In an embodiment of the first aspect of the present application, before calculating the noise strength according to the noise signal, the method further includes: filtering the noise signal in the first time period; and the filtering processing is used for filtering out partial signals of which the duration is less than the preset time and which are out of a preset fluctuation intensity range in the noise signals.
In an embodiment of the first aspect of the present application, the method further includes: receiving a noise gate closing instruction; and closing the noise door according to the noise door closing instruction.
A second aspect of the present application provides an audio processing system comprising: the device comprises an audio processing device, a first microphone, a loudspeaker and a detection device, wherein the first microphone, the loudspeaker and the detection device are respectively connected with the audio processing device; the audio processing device is configured to perform the method according to any one of the first aspect of the present application, for example, by determining, by the detecting device, a noise intensity of an environment in which the audio processing device is located; setting a threshold value of a noise gate of the audio processing device according to the noise intensity; the audio processing apparatus is further configured to, after receiving a first sound signal from a first microphone, compare the intensity of the first sound signal with the threshold value, and play a part of the sound signal of which the intensity is greater than the threshold value in the first sound signal.
In an embodiment of the second aspect of the present application, the detecting device is configured to detect a noise intensity of an environment where the audio processing device is located, and send the noise intensity to the audio processing device; or the detection device is used for collecting noise signals of the environment where the audio processing device is located and sending the two noise signals to the audio processing device, and the audio processing device is used for calculating the noise intensity according to the noise signals.
In summary, the method for setting the noise gate and the audio processing system using the method provided by the embodiment of the present application can actively determine the noise intensity of the environment where the audio processing device is located, and automatically set the threshold of the noise gate without manual setting. Therefore, on the basis that the audio processing system has the noise gate for filtering the environmental noise, according to the intensity of different environmental noises, different environmental noises are filtered, the noise signal received by the audio processing device when the first sound signal is played can be eliminated, the threshold value of the noise gate can be flexibly set, the use time of the audio processing system under different scenes can be further reduced, the complicated setting operation caused by the difference of the environmental noises is reduced, the manpower required by the audio processing system when in use is reduced, the debugging, the maintenance and use cost are reduced, and the user experience of the audio processing system is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present application, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic diagram of an application scenario of the present application;
FIG. 2 is a schematic diagram of an application of a noise gate;
FIG. 3 is a schematic diagram of another noise gate application;
FIG. 4 is a schematic block diagram of an embodiment of an audio processing system provided herein;
FIG. 5 is a schematic flowchart of an embodiment of a method for setting a noise gate provided in the present application;
FIG. 6 is a schematic diagram of the calculated noise intensity provided herein;
FIG. 7 is a schematic diagram of an application of a noise gate provided herein;
FIG. 8 is a schematic diagram of another noise gate application provided herein;
fig. 9 is a schematic structural diagram of another embodiment of an audio processing system provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical solution of the present application will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 1 is a schematic view of an application scenario of the present application, and as shown in fig. 1, an audio processing system 1 provided in the present application may be used in a scenario that requires sound amplification, when a user a speaks, a sound signal including the speaking content of the user a is collected, and after the sound signal is processed, the processed sound signal is played through a speaker, so that more users B can hear the speaking content of the user a included in the sound signal.
For example, the scene shown in fig. 1 may also be a conference scene, and the audio processing system 1 may be configured to collect conference content of the speaker a, process the collected sound signals, and then play the sound signals, so that more participants B can hear the played sound signals, and obtain the conference content of the speaker a. Or, as shown in fig. 1, the scene may be a class teaching scene, and the audio processing system 1 may be configured to collect voice teaching contents of the teacher a, process the collected voice signals, and play the processed voice signals, so that more students B can hear the played voice signals to obtain the teaching contents of the teacher a.
In some embodiments, the audio processing system 1 provided herein comprises: an audio processing device 10, a first microphone 20 and a loudspeaker 30. The audio processing device 10 may be an electronic device such as a computer for processing sound signals, and the first microphone 20, the second microphone 22 and the speaker 30 are respectively connected to the audio processing device 10.
The first microphone 20 is configured to collect a sound signal spoken by the user a, send the sound signal to the audio processing apparatus 10 for processing, and perform subsequent processing on the sound signal by the audio processing apparatus 10.
The audio processing apparatus 10 is configured to receive a sound signal (referred to as a first sound signal, and distinguished from a second sound signal collected by the second microphone 22) from the first microphone 20, process the first sound signal, and then send the processed first sound signal to the speaker 30 for playing. Such treatments include, but are not limited to: echo Cancellation (AEC), automatic Gain Control (AGC), automatic Frequency Control (AFC), and/or Active Noise Reduction (ANR).
The speaker 30 is configured to play an audio signal after receiving the first audio signal sent by the audio processing apparatus 10. In some embodiments, an Amplifier (AMP) may be further included between the audio processing apparatus 10 and the speaker 30, and is configured to amplify the first sound signal sent by the audio processing apparatus 10 and play the amplified first sound signal through the speaker 30.
In some embodiments, when the audio processing system 1 is actually used, because there is noise in the environment, the audio processing apparatus 10 may set a "noise gate", that is, a threshold value of the intensity of one sound signal is passed, when the first sound signal is played, a part of the sound signal below the threshold value is filtered, and only a part of the sound signal above the threshold value is played, so as to prevent the ambient noise received by the first microphone 20 from being played by the speaker 30.
For example, fig. 2 is an application diagram of a noise gate, where it is noted that a threshold value corresponding to the noise gate of the audio processing apparatus 10 is D0, at a time point t0-t1, the first microphone 20 collects a first sound signal with an intensity of D1 and sends the first sound signal to the audio processing apparatus 10, and after receiving the first sound signal, the audio processing apparatus 10 does not play the received first sound signal according to the fact that the intensity of D1 of the first sound signal is smaller than D0. At the time point t1-t2, the first microphone 20 collects the first sound signal with the intensity D2 and sends the first sound signal to the audio processing device 10, and after the audio processing device 10 receives the first sound signal, the first sound signal is greater than D0 according to the intensity D2 of the first sound signal, and at this time, the audio processing device 10 plays a part of the sound signal greater than D0 in the first sound signal through the loudspeaker 30.
In other embodiments, the environment in which the audio processing system 1 is actually used is complex and changeable, and the intensity of the noise existing in the environment may change at any time, for example, fig. 3 is an application diagram of another noise gate, where after the time t2, assuming that the user a instructs the user B to discuss, the ambient noise will greatly increase after the time t3, and at this time, the intensity D3 of the first sound signal collected by the first microphone 20 will be greater than the threshold value D0 of the noise gate. Then at time t3-t4, even if the user a does not speak, the audio processing device 10 will play the part of the first sound signal with intensity greater than D0 after receiving the first sound signal, and even if the first sound signal only includes noise, the audio processing device 10 will play the part of the first sound signal with intensity greater than D0, causing the audio processing system 1 to amplify and play the noise signal, and losing the meaning of the noise gate.
In some embodiments, the threshold value D0 of the noise gate may be adjusted, for example, set in advance by a manufacturer of the audio processing apparatus 1, or set or adjusted by a worker, a user a, or a user B, or other relevant personnel, but this approach still has a link requiring manual field testing and debugging, so that the audio processing system 1 is complex and troublesome to use, and consumes much labor, debugging, maintenance, and use costs.
In some embodiments, the present application further provides an audio processing system 1, so that the audio processing apparatus 10 can automatically adjust the threshold value of the noise gate "automatically" according to the noise of the current environment, thereby playing a function of filtering the environmental noise by the noise gate, and also achieving adjustment and setting of the noise gate more intelligently and effectively, omitting the work of manual testing and setting the noise gate, and reducing the complexity and cost of the audio processing system 1 during use.
Fig. 4 is a schematic structural diagram of an embodiment of an audio processing system provided in the present application, and the audio processing apparatus shown in fig. 4 further includes, on the basis of fig. 1: and the detection device 40 is used for detecting the noise of the current environment and sending the detection result to the audio processing device 10, so that the audio processing device 10 determines the noise intensity of the current environment according to the detection result. Subsequently, the audio processing apparatus 10 may set the threshold value of its noise gate according to the noise intensity of the current environment.
In some embodiments, the audio processing system 1 as shown in fig. 4 may be provided in a housing, in the overall arrangement of a device; alternatively, the audio processing device 10 in the audio processing system 1 is disposed in a housing and can be connected to the external first microphone 20, the detecting device 40 and the speaker 30 through a wired or wireless connection.
In some embodiments, the detecting device 40 may be a second microphone, and the second microphone 22 is configured to collect a noise signal (denoted as a second sound signal) of an environment where the audio processing system 1 is located, and send the collected second sound signal to the audio processing device 10 for processing.
In some embodiments, the first microphone may be a directional microphone and the second microphone may be an omni-directional microphone.
In some embodiments, a processor such as a CPU may be integrated in the second microphone, so that after the second microphone collects the noise signal, the second microphone calculates the noise intensity of the noise signal, and sends noise intensity information to the audio processing apparatus 10, so that the audio processing apparatus 10 directly receives the noise intensity determined by the second microphone, and the amount of calculation of the audio processing apparatus 10 is reduced.
In some embodiments, a plurality of second microphones may be included in the audio processing system 10, and each of the second microphones may be used to collect a noise signal, and the audio processing apparatus 10 may jointly determine the noise intensity of the current environment according to the received detection results sent by the plurality of second microphones, for example, calculate an average value or a maximum value of the intensities of the noise signals collected by all the second microphones as the noise intensity. For example, the audio processing system 10 may include four second microphones, respectively disposed at four corners in a conference room, etc., for capturing ambient noise at the four corner locations.
Fig. 5 is a flowchart illustrating an embodiment of a method for setting a noise gate provided in the present application, and shows a flow of a method for setting a threshold of a noise gate according to a noise intensity of the audio processing apparatus 10 shown in fig. 4, which includes:
s101: the audio processing device 10 determines the noise level of the environment in which it is located. In order to adjust the threshold value of the noise gate, the audio processing apparatus 10 first determines the noise intensity of the current environment. Since the audio processing system 1 comprises the audio processing device 10, it is also equivalent to the audio processing device 10 determining the noise level of the environment in which the entire audio processing system 1 is located.
In an embodiment, the detecting device 40 in the audio processing system 1 may collect a noise signal, calculate the noise intensity of the noise signal, and send the noise intensity to the audio processing device 10 through the noise intensity information, so that the audio processing device 10 determines the noise intensity carried in the noise signal after receiving the noise intensity information from the detecting device 40. At this time, the detection device 40 has a processing capability of calculating the noise intensity instead of the audio processing device 10, for example, after the detection device 40 collects the noise signal, an average value or a maximum value of the intensity of the noise signal is calculated as the noise intensity and is directly transmitted to the audio processing device 10, so that the audio processing device 10 can directly determine the noise intensity in S101.
In another embodiment, the detecting device 40 in the audio processing system 1 is configured to collect a noise signal and directly send the collected noise signal to the audio processing device 10, and after the audio processing device 10 receives the noise signal, the audio processing device 10 further specifically calculates the noise intensity of the noise signal, for example, after the audio processing device 10 receives the noise signal collected by the detecting device 40, an average value or a maximum value of the intensity of the noise signal is calculated as the noise intensity.
For example, fig. 6 is a schematic diagram of calculating the noise intensity provided by the present application, and it is assumed that the audio processing device 10 receives the noise signal sent from the detecting device 40 during the first time period t3-t 31. The audio processing apparatus 10 performs a filtering process on the noise signal before calculating the noise intensity, so as to filter out the sound signal with a sudden change between t32 and t33 in the noise signal. The audio processing apparatus 10 may set a preset fluctuation intensity range, for example, d31-d32, for the noise signal, then determine that the intensity of the noise signal between t32-t33 exceeds the intensity range, and then determine that the duration t32-t33 is less than the preset time, determine that the part of the abrupt sound signal is not the noise signal desired to be collected, but is a sudden interference signal, and thus filter the part of the signal. Subsequently, the audio processing apparatus 10 calculates the average value d3 of the intensities of the noise signals of the filtered first period as the noise intensity. Alternatively, the maximum value d31 of the intensity of the noise signal in the first period may be used as the noise intensity.
S102: the audio processing apparatus 10 sets the threshold value of the noise gate according to the noise intensity determined in S101. The audio processing apparatus 10 may specifically determine the first threshold according to the noise intensity, and then set the threshold of the noise gate as the first threshold. It is understood that, if the threshold value of the previous noise value is the second threshold value, the audio processing apparatus 10 adjusts the threshold value of the noise gate thereof from the second threshold value to the first threshold value.
In some embodiments, the audio processing apparatus 10 may directly use the noise strength determined in S101 as the first threshold, or may further obtain the first threshold after adding the noise strength to a preset value, so that the threshold of the noise gate is slightly higher than the noise strength, but the first threshold should also be smaller than the strength of the first sound signal, otherwise, the first sound signal that should be played is calculated as noise and is not played.
Finally, after the audio processing apparatus 10 sets the threshold value of the noise gate to the first threshold value in S102, the audio processing apparatus 10 subsequently receives the first sound signal from the first microphone, compares the intensity of the first sound signal with the first threshold value, and when the intensity of the first sound signal is greater than the first threshold value, the audio processing apparatus 10 plays a part of the sound signal of the first sound signal whose intensity is greater than the first threshold value through the speaker 30; when the intensity of the first sound signal is smaller than the first threshold, the audio processing apparatus 10 does not play the first sound signal. In addition, when the intensity of the first sound signal is equal to the first threshold value, the audio processing apparatus 10 may play or not play the first sound signal, and may be set according to different scenes or by different users.
In some embodiments, fig. 7 is a schematic diagram of an application of a noise gate provided by the present application, where at time t3, a threshold value of the noise gate of the audio processing apparatus 10 is D0, and then the audio processing apparatus 10 determines a noise intensity of an environment in a time period from t3 to t31 as D3 according to S101, and adjusts the threshold value of the noise gate from D0 to D1 according to S102. Before the time t31, since the noise intensity D3 of the environment where the audio processing apparatus 10 is located is greater than the threshold value D0 of the noise gate, after the audio processing apparatus 10 receives the first sound signal of the first microphone, even the noise signal with the intensity D3, a part of the noise signal greater than the threshold value is played through the speaker 30. After the threshold value of the noise gate is reset to D1 at t31, the audio processing apparatus 10 receives the noise signal with the intensity of D3 and then does not play the received noise signal through the speaker 30, but only after the first sound signal with the intensity of D1 greater than the threshold value D1 is received between time t4 and time t5, the audio processing apparatus plays a part of the sound signal with the intensity greater than the threshold value D1 in the first sound signal through the speaker 30.
Compared with the embodiment shown in fig. 3, the embodiment shown in fig. 7 can keep the function of eliminating the environmental noise on the one hand and reduce the unnecessary cost of manually adjusting the threshold value of the noise gate on the other hand, because the audio processing device 10 can increase the threshold value of the noise gate accordingly after the environmental noise becomes stronger at time t 3.
In some embodiments, the length between t3-t31 may be 5 minutes, 10 minutes, or may be adjusted and set. In some embodiments, the audio processing device performs the noise gate setting method provided herein once every interval, for example, every 30 minutes, to set the noise gate, so that the real-time performance of the noise gate setting can be maintained.
In other embodiments, the threshold value may be increased by the audio processing apparatus when the noise gate is set, as shown in fig. 7, or, in other embodiments, the threshold value may also be decreased, for example, fig. 8 is an application schematic diagram of another noise gate provided in this application, where, after time t5 in fig. 8, the audio processing apparatus 10 determines that the received noise strength is D1 in a time period from t6 to t7, and may decrease the threshold value of the noise gate from D1 to D0, so that after time t8, the audio processing apparatus 10 determines whether to play the first sound signal according to the noise gate of D0, and the degree of distinction between the first sound signal and the first sound signal can be increased.
In summary, the method for setting the noise gate and the audio processing system applying the method provided by the embodiment can actively determine the noise intensity of the environment where the audio processing device is located, and set the threshold value of the noise gate "automatically" without manual setting. Therefore, on the basis that the audio processing system has the noise gate for filtering the environmental noise, according to the intensity of different environmental noises, different environmental noises are filtered, the noise signal received by the audio processing device when the first sound signal is played can be eliminated, the threshold value of the noise gate can be flexibly set, the use time of the audio processing system under different scenes can be further reduced, the complicated setting operation caused by the difference of the environmental noises is reduced, the manpower required by the audio processing system when in use is reduced, the debugging, the maintenance and use cost are reduced, and the user experience of the audio processing system is greatly improved.
As an example, when the audio processing system provided by the present application is applied in a conference scenario as shown in fig. 1, where a user a speaks using the first microphone 21, the first microphone 21 collects a first sound signal of the user a and sends the first sound signal to the audio processing apparatus 10, and the first sound signal is processed by the audio processing apparatus 10 and then sent to the speaker 30 for playing. Meanwhile, the audio processing apparatus 10 further filters the first sound signal through the noise gate D0, filters out noise of other users in the first sound signal, and only plays a part of the sound signal in the first sound signal, where the part of the sound signal includes the speech content of the user a and has the intensity greater than D0. Subsequently, when the user a stops speaking into the first microphone 21 during the conference and is discussed by all users B, the ambient noise signal in the conference room at this time will greatly increase, and the intensity may exceed the threshold value D0 of the noise gate, at this time, the audio processing device 10 may set the threshold value of the noise gate to D1 according to the intensity of the noise, so as to filter the ambient noise, and when the user a speaks into the first microphone 21 again, even though the user B is still discussing, the ambient noise from the user B may be filtered, so that the playing of the first sound signal of the user a is not affected, and the audio processing device 10 will not play the ambient noise through the speaker, so as to affect the discussion of the user B.
In some embodiments, fig. 9 is a schematic structural diagram of another embodiment of the audio processing system provided in the present application, and the audio processing system shown in fig. 9 further includes, on the basis of the embodiment shown in fig. 4: and a control device 50. The control device 50 may be communicatively coupled to the audio processing device 10 via wired or wireless communication. The control device 50 may be a remote controller, a key, or other physical device, and when the control device 50 detects a clicking action corresponding to the closing instruction, sends a noise gate closing instruction to the audio processing device 10, so that the audio processing device 10 stops using the noise gate after receiving the noise gate closing instruction, and then directly plays through the speaker 30 after receiving the first sound signal. In some embodiments, when the control device 50 detects the click action corresponding to the opening instruction again, a noise door opening instruction is sent to the audio processing device 10, so that the audio processing device 10 reopens the noise door.
It should be noted that, in the audio processing system described above in this embodiment, the division of each device/apparatus is only a logical division, and all or part of the actual implementation may be integrated into one physical entity, or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. The processing element may be a separate processing element, or may be integrated into a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and a processing element of the apparatus may call and execute the functions of the above determination module. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
For example, the above modules/units may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. For another example, when some of the above modules are implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. As another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
In the above embodiments, all or part of the method steps performed by the audio processing apparatus in the audio processing system may be implemented by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.
The present application further provides an electronic device, comprising: a processor and a memory; wherein the memory has stored therein a computer program which, when executed by the processor, is operable to perform a method of setting a noise gate as in any one of the preceding embodiments of the present application.
The present application also provides a computer-readable storage medium storing a computer program which, when executed, is operable to perform the setting method of the noise gate as in any one of the preceding embodiments of the present application.
The embodiment of the present application further provides a chip for executing the instruction, where the chip is used to execute the setting method of the noise gate executed by the audio processing apparatus in any one of the foregoing embodiments of the present application.
Embodiments of the present application also provide a program product comprising a computer program stored in a storage medium, the computer program being readable from the storage medium by at least one processor, the at least one processor being capable of implementing a method of setting a noise gate as performed by an audio processing apparatus in any of the embodiments of the present application when executing the computer program.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill 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 application.

Claims (10)

1. A method of setting a noise gate, comprising:
determining the noise intensity of the environment where the audio processing device is located;
and setting a threshold value of a noise gate of the audio processing device according to the noise intensity.
2. The method of claim 1, wherein setting a threshold value of a noise gate of the audio processing device according to the noise strength comprises:
determining a first threshold value according to the noise intensity;
setting a threshold value of a noise gate of the audio processing apparatus to the first threshold value.
3. The method of claim 2, wherein determining the noise level of the environment in which the audio processing device is located comprises:
and receiving a noise signal of the environment where the detection device is located from the detection device, and calculating the noise intensity according to the noise signal.
4. The method of claim 1, wherein determining the noise level of the environment in which the audio processing device is located comprises:
receiving the noise intensity from the detection device; wherein the noise strength is determined by the detection device from an ambient noise signal.
5. The method according to claim 3 or 4, wherein the determining a first threshold value according to the noise strength comprises:
taking the noise intensity as the first threshold value;
alternatively, the first and second electrodes may be,
and adding the noise intensity and a preset value to obtain the first threshold value.
6. The method of claim 3, wherein said calculating the noise strength from the noise signal comprises:
calculating the average value of the intensity of the noise signal in the first time period, wherein the average value is the noise intensity;
alternatively, the first and second electrodes may be,
and calculating the maximum value of the intensity of the noise signal in the first time period, wherein the maximum value is the noise intensity.
7. The method of claim 6, wherein before calculating the noise strength from the noise signal, further comprising:
filtering the noise signal in the first time period; and the filtering processing is used for filtering out partial signals of which the duration is less than the preset time and which are out of a preset fluctuation intensity range in the noise signals.
8. The method of claim 1, further comprising:
receiving a noise gate closing instruction;
and closing the noise door according to the noise door closing instruction.
9. An audio processing system, comprising:
the device comprises an audio processing device, a first microphone, a loudspeaker and a detection device, wherein the first microphone, the loudspeaker and the detection device are respectively connected with the audio processing device;
the audio processing device is used for determining the noise intensity of the environment where the audio processing device is located through the detection device; setting a threshold value of a noise gate of the audio processing device according to the noise intensity;
the audio processing apparatus is further configured to, after receiving a first sound signal from a first microphone, compare the intensity of the first sound signal with the threshold value, and play a part of the sound signal of which the intensity is greater than the threshold value in the first sound signal.
10. The system of claim 9,
the detection device is used for detecting the noise intensity of the environment where the audio processing device is located and sending the noise intensity to the audio processing device;
alternatively, the first and second electrodes may be,
the detection device is used for collecting noise signals of the environment where the audio processing device is located and sending the two noise signals to the audio processing device, and the audio processing device is used for calculating the noise intensity according to the noise signals.
CN202110651039.XA 2021-06-10 2021-06-10 Noise gate setting method and audio processing system Pending CN115472173A (en)

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