CN116741194B - Spatial local noise reduction method, device, equipment, system and storage medium - Google Patents
Spatial local noise reduction method, device, equipment, system and storage medium Download PDFInfo
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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
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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
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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
- G10K11/17823—Reference signals, e.g. ambient acoustic environment
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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
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
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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
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
- G10L2021/02166—Microphone arrays; Beamforming
Abstract
The embodiment of the application discloses a spatial local noise reduction method, a device, equipment, a system and a storage medium. Acquiring each path of environment audio; determining noise reduction audios corresponding to the environmental audios according to the environmental audios of each path and the distance between the acquisition position of the environmental audios of each path and the target noise reduction position; and outputting noise reduction audio corresponding to each path of environment audio to realize local noise reduction of the space where the target noise reduction position is located. The embodiment of the application realizes local noise reduction in the open environment.
Description
Technical Field
Embodiments of the present application relate to communications technologies, and in particular, to a spatial local noise reduction method, device, equipment, system, and storage medium.
Background
In public areas such as subway stations, hospital halls and large-scale business superb, along with the use of intelligent voice functions in various self-service devices, the demands for local space noise reduction are increasing. When the environment where the self-service equipment is located is noisy, the function in the self-service equipment can be used by a user through the voice function, and user experience is reduced.
The prior art can only realize global noise reduction of a closed narrow space, but has no effective local space active noise reduction scheme aiming at a noisy open space environment.
Disclosure of Invention
The application provides a spatial local noise reduction method, device, equipment, system and storage medium, so as to realize local noise reduction in an open environment.
In a first aspect, an embodiment of the present application provides a spatial local area noise reduction method, where the spatial local area noise reduction method includes:
acquiring each path of environment audio;
determining noise reduction audios corresponding to the environmental audios according to the environmental audios of each path and the distance between the acquisition position of the environmental audios of each path and the target noise reduction position;
and outputting noise reduction audio corresponding to each path of environment audio to realize local noise reduction of the space where the target noise reduction position is located.
In a second aspect, an embodiment of the present application further provides a spatial local noise reduction device, where the spatial local noise reduction device includes:
the environment audio acquisition module is used for acquiring each path of environment audio;
the noise reduction audio determining module is used for determining noise reduction audio corresponding to each path of environmental audio according to each path of environmental audio and the distance between the acquisition position of each path of environmental audio and the target noise reduction position;
the noise reduction audio output module is used for outputting noise reduction audio corresponding to each path of environmental audio so as to realize local noise reduction of the space where the target noise reduction position is located.
In a third aspect, an embodiment of the present application further provides a spatial local noise reduction device, where the spatial local noise reduction device includes:
one or more processors;
a storage means for storing one or more programs;
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement any of the spatially localized noise reduction methods as provided by the embodiments of the present application.
In a fourth aspect, an embodiment of the present application further provides a spatial local noise reduction system, including: a spatial local area noise reduction device; the system also comprises a plurality of environmental microphones and a plurality of loudspeakers; wherein, each path of environment microphone corresponds to one path of loudspeaker, and the plurality of paths of environment microphones and the plurality of paths of loudspeakers are respectively and electrically connected with the spatial local noise reduction equipment;
the multi-path environmental microphone is used for acquiring environmental audio and sending the environmental audio to the spatial local noise reduction equipment;
the spatial local noise reduction equipment is used for determining noise reduction audios corresponding to the environmental audios according to the received environmental audios and the distance between the acquisition position of the environmental audios and the target noise reduction position, and sending the noise reduction audios to corresponding speakers;
the multipath loudspeakers are used for receiving and outputting corresponding noise reduction audio frequency so as to realize local noise reduction of the space where the target noise reduction position is located.
In a fifth aspect, embodiments of the present application also provide a storage medium comprising computer-executable instructions, which when executed by a computer processor, are configured to perform any one of the spatial localized noise reduction methods as provided by embodiments of the present application.
According to the method and the device, through obtaining the environmental audios of all paths, the environmental audios of a plurality of directions in an open environment can be obtained, and a comprehensive data base is provided for local denoising; according to each path of environment audio and the distance between each path of environment audio acquisition position and the target noise reduction position, determining noise reduction audio corresponding to each path of environment audio, and carrying out noise reduction on a local area where the target noise reduction position is located in space; and outputting noise reduction audio corresponding to each path of environmental audio to form stereo noise reduction audio in the space, and realizing local noise reduction of the space where the target noise reduction position is located. Therefore, through the technical scheme of the application, the problem that an effective local space active noise reduction scheme is not available for a noisy open space environment is solved, and the effect of local noise reduction in the open space environment is achieved.
Drawings
FIG. 1 is a flow chart of a spatial localized noise reduction method according to a first embodiment of the present application;
FIG. 2 is a flow chart of a spatial localized noise reduction method in a second embodiment of the present application;
fig. 3 is a schematic structural diagram of a spatial local noise reduction device in a third embodiment of the present application;
fig. 4 is a schematic structural diagram of an electronic device in a fourth embodiment of the present application;
fig. 5 is a schematic structural diagram of a spatial local noise reduction system in a fifth embodiment of the present application.
Description of the embodiments
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first" and "second" and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented 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.
Examples
Fig. 1 is a flowchart of a spatial local noise reduction method provided in an embodiment of the present application, where the embodiment is applicable to a case of noise reduction in an open environment, and the method may be performed by a spatial local noise reduction device, where the device may be implemented by software and/or hardware and specifically configured in a client, for example, a mobile phone.
Referring to the spatial local noise reduction method shown in fig. 1, the spatial local noise reduction method is applied to a client, and specifically comprises the following steps:
s110, acquiring each path of environment audio.
The environmental audio may be audio in the environment acquired through a microphone for determining noise audio in the environment. The environmental audio is at least 6 paths so as to capture the environmental audio in all directions in the environment in an omnibearing way. Specifically, the number of paths of the environmental audio may be determined according to factors such as noise reduction effect requirements, an area of a field environment, and a noisy degree, which is not specifically limited in the present application.
S120, determining noise reduction audios corresponding to the environmental audios according to the environmental audios and the distance between the acquisition positions of the environmental audios and the target noise reduction positions.
The each path of environmental audio acquisition position may be a position for acquiring each path of environmental audio, and is used for determining noise reduction audio. For example, each path of environmental audio acquisition position may be the position of each microphone. The target noise reduction location may be a location where noise reduction is desired. For example, the target noise reduction location may be a solid obstruction. For example, the target noise reduction location may be a wall surface or a person, or the like. The target noise reduction position may be set manually or determined automatically, which is not particularly limited in this application. The noise reduction audio can be the audio for reducing noise of the target noise reduction position, and the noise reduction audio corresponding to each path of environment audio can be different.
According to the distance between the acquisition position of each path of environmental audio and the target noise reduction position, the intensity of each path of environmental audio at the target noise reduction position is determined, the phase of each path of environmental audio is inverted, each path of environmental audio can be counteracted at the target noise reduction position, and noise reduction of a local area is realized.
S130, outputting noise reduction audio corresponding to each path of environment audio to realize local noise reduction of the space where the target noise reduction position is located.
And outputting noise reduction audio corresponding to each path of environmental audio at each path of environmental audio acquisition position, and using the noise reduction audio at the target noise reduction position to realize local noise reduction of the space where the target noise reduction position is located. Optionally, the target audio is output while the noise reduction audio corresponding to each path of environment audio is output. The target audio is computer audio output in a specific direction and is used for conveying target information to a user. For example, in a station, the target audio may be broadcast audio of a train number list. Through outputting the noise reduction audio corresponding to each path of environment audio, the user can clearly acquire the target audio in the local space within the noise reduction range.
According to the technical scheme, through obtaining the environmental audios of all paths, environmental audios of a plurality of directions in an open environment can be obtained, and a comprehensive data base is provided for local denoising; according to each path of environment audio and the distance between each path of environment audio acquisition position and the target noise reduction position, determining noise reduction audio corresponding to each path of environment audio, and carrying out noise reduction on a local area where the target noise reduction position is located in space; and outputting noise reduction audio corresponding to each path of environmental audio to form stereo noise reduction audio in the space, and realizing local noise reduction of the space where the target noise reduction position is located. Therefore, through the technical scheme of the application, the problem that an effective local space active noise reduction scheme is not available for a noisy open space environment is solved, and the effect of local noise reduction in the open space environment is achieved.
Examples
Fig. 2 is a flowchart of a flowchart method of a spatial local noise reduction method according to a second embodiment of the present application, where the technical solution of the present embodiment is further refined on the basis of the technical solution.
Further, the noise reduction audio corresponding to each path of environmental audio is determined according to each path of environmental audio and the distance between the acquisition position of each path of environmental audio and the target noise reduction position, and is refined as follows: determining the intensity of noise reduction audio corresponding to each path of environmental audio according to the distance between the acquisition position of each path of environmental audio and the target noise reduction position; and inverting the phase of each path of environment audio, and determining the noise reduction audio corresponding to each path of environment audio based on the intensity of the corresponding noise reduction audio so as to determine the noise reduction audio.
Referring to fig. 2, a spatial local noise reduction method includes:
s210, acquiring each path of environment audio.
S220, determining the intensity of the noise reduction audio corresponding to each path of environmental audio according to the distance between the acquisition position of each path of environmental audio and the target noise reduction position.
And determining the distance between the audio acquisition position of each path of environment and the target noise reduction position through a distance measuring device. For example, a distance measuring device may be installed at each path of environmental audio acquisition position, and the distance from the installation position of the microphone for acquiring each path of environmental audio to the target noise reduction position is determined. The distance measuring device may be used for measuring distance by laser, infrared or ultrasonic, etc., which is not particularly limited in this application. The intensity of the noise reduction audio can be the volume of each path of noise reduction audio. The distances between the environmental audio frequencies at different positions and the target noise reduction position are different, so that the intensity of the noise reduction audio frequencies of the environmental audio frequencies is different in order to form stereo noise reduction audio frequencies. Based on the Deboehter effect principle, in order to obtain the quietest environmental effect at a position with a specific distance or the best noise reduction effect from a specific sound source (the sound conducted by the ground and the wall on the back), the intensity of the noise reduction audio corresponding to each path of environmental audio can be determined by the following formula:
；
wherein,the intensity of the noise reduction audio corresponding to each path of environmental audio; />The intensity of each path of environment audio frequency; />Obtaining the distance between the position and the target noise reduction position for each path of environment audio; />The audio sequence number of each path of environment; />Is the intensity unit of the audio.
It should be noted thatFor noise that does not satisfy the condition, auxiliary noise reduction may be achieved by adding appropriate background music, white noise, pink noise, or the like.
In an alternative embodiment, background audio is added to each path of environmental audio according to the target scene.
The target scene may be a scene to which the spatial local noise reduction method is applied. By way of example, the target scene may be a conference room, a waiting station, a restroom, or the like. The background audio can be the audio used for auxiliary noise reduction, so that all paths of environment audio are shielded, and the user experience is improved. By way of example, the background audio may be background music, white noise, rain sound, pink noise, etc., which is not particularly limited in this application.
White noise is noise having equal power spectral densities of noise contained in frequency bands of equal bandwidths in a wide frequency range. Pink noise is also known as inverse frequency noise because its energy distribution is inversely proportional to frequency, or the energy per Octave (Octave) decays by 3dB.
For example, when there is always a complex sound in the target scene, the background audio may be white noise. Illustratively, there is always a speaking sound in the target scene, and pink noise may be selected for the background audio. The pink noise can also improve the privacy of the space, and can be increased when the target scene is a meeting room scene or a man-machine interaction scene, for example, when the target scene is a self-service ticket purchasing scene. For example, when the target scene needs to provide sleeping service for the user, the background audio can select rainy sound to provide a comfortable sleeping environment for the user. For example, when the target scene is other scenes, the background audio may be selected as background music.
By adding background audio to each path of environment audio according to the target scene, each path of environment audio can be assisted to reduce noise, personalized service is provided for the user according to the target scene, and user experience is improved.
In an alternative embodiment, determining the intensity of the noise reduction audio corresponding to each path of environmental audio according to the distance between the acquisition position of each path of environmental audio and the target noise reduction position includes: determining whether preset noise audio exists according to each path of environment audio; if yes, determining the position of each path of additional environmental audio according to the preset noise audio; and determining the intensity of the noise reduction audio corresponding to the preset noise audio according to the distance between the acquisition position of each path of additional environmental audio and the target noise reduction position.
The preset noise audio may be noise audio in a specific direction. For example, the preset noise audio may be audio with a high noise intensity. Specifically, the preset noise audio may be specified manually, or may be determined automatically by determining the intensity of each path of environmental audio, which is not specifically limited in the present application. For example, if the preset noise audio is manually specified, it is determined whether each path of environmental audio is specified as the preset noise audio, and if so, the path of environmental audio is determined as the preset noise audio. By way of example, whether preset noise audio exists can be automatically determined by judging the intensity of each path of environmental audio. For example, whether each path of environmental audio is greater than or equal to a preset noise intensity may be determined, and if there is a path of environmental audio whose intensity is greater than or equal to the preset noise intensity, the path of environmental audio is determined to be the preset noise audio. Alternatively, the preset noise audio may be new audio in a certain direction, that is, the preset noise audio is audio other than the environmental audio of each path.
The additional environmental audio may be environmental audio of each path around the preset noise audio acquisition position, for eliminating the preset noise audio. The number of the additional environmental audio may be determined according to a requirement or a preset noise audio, which is not particularly limited in this application. For example, the multiple paths of additional environmental audio are determined according to the preset noise audio, and the environmental audio in a direction close to the acquisition position of the preset noise audio can be used as the additional environmental audio. For example, the additional environmental audio may be environmental audio contained in a sphere centered at a preset noise audio acquisition position and having a preset length as a radius.
Optionally, the acquisition positions of the additional environmental audio are located on 3 adjacent spatial planes with the preset noise audio acquisition positions as vertices.
If the preset noise audio is the audio in the specific direction other than the environmental audio of each path, each path of environmental audio on the 3 adjacent spatial planes with the preset noise audio acquisition position as the vertex hexahedron can be used as the additional environmental audio.
The acquisition positions of the additional environmental audio are located on 3 adjacent space planes taking the acquisition positions of the additional environmental audio as the vertex hexahedrons, so that the number of paths of the additional environmental audio can be reduced as much as possible, and the omnibearing package of the additional environmental audio can be realized, so that the later stage can eliminate the additional environmental audio from omnibearing according to the additional environmental audio at the target noise reduction position.
According to the distance between the acquisition position of each path of extra environmental audio and the target noise reduction position, the intensity of the noise reduction audio corresponding to each path of extra environmental audio is determined, and in order to better eliminate main noise, the intensity of the noise reduction audio corresponding to each path of extra environmental audio can be properly increased.
Determining whether preset noise audio exists or not according to each path of environment audio; if yes, determining the position of each path of additional environmental audio according to the preset noise audio; according to the distance between each path of additional environmental audio acquisition position and the target noise reduction position, the intensity of the noise reduction audio corresponding to the preset noise audio is determined, the specific preset noise audio can be eliminated at the target noise reduction position, a better local noise reduction effect is realized, the influence of noise in a specific direction on the noise reduction result of the target noise reduction position is avoided, and the local noise reduction effect is achieved.
In an alternative embodiment, determining the intensity of the noise reduction audio corresponding to the preset noise audio according to the distance between the preset noise audio acquisition position and the target noise reduction position in each path includes: according to the relative relation between the acquisition position of the preset noise audio and the acquisition position of each path of additional environmental audio, determining the intensity of the noise reduction audio corresponding to each path of additional environmental audio based on an imaging principle.
The relative relation between the acquisition position of the preset noise audio and the acquisition position of each path of additional environmental audio can be a relative distance and a relative angle. According to the imaging principle, according to the relative relation between the acquisition position of the preset noise audio and the acquisition position of each path of additional environmental audio, the intensity of the noise reduction audio corresponding to the additional environmental audio is increased, and the spatial local noise reduction of the preset noise audio at the target noise reduction position is realized.
Imaging is a geometric term that, for a stereo playback system, after a musical instrument (or a group of musical instruments) or a singer (or a group of singers) sounds at a location, a person perceives its location and shape on the sound stage through the experience of the sound in the playback system. The imaging concept comprises two aspects of positioning (azimuth, distance) and shape, and the empty positioning concept is just one azimuth and distance space point; adding to the shape of the instrument constitutes a complete concept of "imaging", i.e. the sound of the shaped body from this point in space. The omnibearing denoising of noise in the local open space can be realized by using at least 6 paths of noise reduction audios based on an imaging principle.
According to the relative relation between the acquisition position of the preset noise audio and the acquisition position of each path of additional environmental audio, the intensity of the noise reduction audio corresponding to each path of additional environmental audio is determined based on an imaging principle, so that the influence of the additional environmental audio on the target noise reduction position can be eliminated more accurately, accurate noise reduction at the target noise reduction position is realized, and a better noise reduction effect is achieved.
In an alternative embodiment, according to a relative relation between an acquisition position of a preset noise audio and an acquisition position of each path of additional environmental audio, determining, based on an imaging principle, an intensity of noise reduction audio corresponding to each path of additional environmental audio includes: determining the basic noise reduction strength corresponding to each path of additional environmental audio according to the distance between the acquisition position of each path of additional environmental audio and the target noise reduction position; determining the additional noise reduction intensity corresponding to each additional environmental audio according to the relative relation between the acquisition position of the preset noise audio and the acquisition position of each additional environmental audio; and determining the intensity of the noise reduction audio corresponding to each path of additional environmental audio according to the basic noise reduction intensity and the additional noise reduction intensity corresponding to each path of additional environmental audio.
The basic noise reduction strength can be the strength of noise reduction audio determined based on an imaging principle according to the distance between the acquisition position of each path of additional environmental audio and the target noise reduction position. Specifically, the basic noise reduction strength may be determined by the method in the above embodiment, which is not described herein.
The additional noise reduction strength may be the additional strength of the noise reduction audio determined based on the imaging principle according to the relative relationship between the acquisition position of the preset noise audio and the acquisition position of each path of additional environmental audio, and is used for improving the noise reduction effect of the preset noise audio. Specifically, the additional noise reduction strength may be determined by:
；
wherein,the relative distance between the acquisition position of the noise audio and the acquisition position of each path of additional environmental audio is preset.
The distance between the acquisition position of each path of additional environmental audio and the target noise reduction position can be acquired through a distance measuring device installed at the acquisition position of each path of additional environmental audio, or can be determined through the relative relation between the acquisition position of the preset noise audio and the acquisition position of each path of additional environmental audio and the position relation between the preset noise audio and each path of environmental audio, so that the hardware cost is reduced.
And adding the basic noise reduction intensity and the additional noise reduction intensity corresponding to each path of additional environmental audio as the intensity of the noise reduction audio corresponding to each path of additional environmental audio.
Determining the basic noise reduction strength corresponding to each path of additional environmental audio according to the distance between the acquisition position of each path of additional environmental audio and the target noise reduction position; determining additional noise reduction intensity corresponding to each additional environmental audio according to the relative relation between the acquisition position of the preset noise audio and the acquisition position of each additional environmental audio, determining the additional noise reduction intensity according to the relative distance, and determining the additional noise reduction intensity according to the distance between the acquisition position of each additional environmental audio and the acquisition position of the preset noise audio so as to realize accurate noise reduction of the preset noise audio at the target noise reduction position; according to the basic noise reduction intensity and the additional noise reduction intensity corresponding to each path of additional environmental audio, the intensity of the noise reduction audio corresponding to each path of additional environmental audio is determined, the intensity of the noise reduction audio corresponding to each path of additional environmental audio is accurately determined through the basic noise reduction intensity and the additional noise reduction intensity, the noise reduction effect of the preset noise audio at the target noise reduction position is improved, and the better spatial local noise reduction effect is realized.
S230, inverting the environmental audios of each path, and determining the noise reduction audios corresponding to the environmental audios of each path based on the intensity of the corresponding noise reduction audios.
By inverting the phase of each path of environmental audio, the cancellation of each path of environmental audio can be realized through the phase inversion, thereby realizing noise reduction. The phase of the noise reduction audio corresponding to each path of environmental audio is determined by inverting the environmental audio, the amplitude of the noise reduction audio corresponding to each path of environmental audio is determined based on the intensity of the noise reduction audio corresponding to each path of environmental audio, and the frequency of the noise reduction audio corresponding to each path of environmental audio is the same as that of each path of environmental audio. And determining the noise reduction audio corresponding to each path of environmental audio through the frequency, the amplitude and the phase of the noise reduction audio corresponding to each path of environmental audio.
S240, outputting noise reduction audio corresponding to each path of environment audio to realize local noise reduction of the space where the target noise reduction position is located.
According to the technical scheme of the embodiment, the intensity of the noise reduction audio corresponding to each path of environmental audio is determined according to the distance between the acquisition position of each path of environmental audio and the target noise reduction position, and the imaging effect at the target noise reduction position is realized according to different intensities; and inverting each path of environment audio to offset the acquired path of environment audio so as to realize noise reduction, determining the noise reduction audio corresponding to each path of environment audio based on the intensity of the corresponding noise reduction audio, and realizing the spatial local noise reduction of the target noise reduction position.
Examples
Fig. 3 is a schematic structural diagram of a spatial local noise reduction device according to a third embodiment of the present application, where the embodiment is applicable to noise reduction in an open environment, and the spatial local noise reduction device has the following specific structure:
an environmental audio acquisition module 310, configured to acquire environmental audio of each path;
the noise reduction audio determining module 320 is configured to determine noise reduction audio corresponding to each path of environmental audio according to each path of environmental audio and a distance between the acquisition position of each path of environmental audio and the target noise reduction position;
the noise reduction audio output module 330 is configured to output noise reduction audio corresponding to each path of environmental audio, so as to implement local noise reduction for the space where the target noise reduction position is located.
According to the technical scheme, through obtaining the environmental audios of all paths, environmental audios of a plurality of directions in an open environment can be obtained, and a comprehensive data base is provided for local denoising; according to each path of environment audio and the distance between each path of environment audio acquisition position and the target noise reduction position, determining noise reduction audio corresponding to each path of environment audio, and carrying out noise reduction on a local area where the target noise reduction position is located in space; and outputting noise reduction audio corresponding to each path of environmental audio to form stereo noise reduction audio in the space, and realizing local noise reduction of the space where the target noise reduction position is located. Therefore, through the technical scheme of the application, the problem that an effective local space active noise reduction scheme is not available for a noisy open space environment is solved, and the effect of local noise reduction in the open space environment is achieved.
Optionally, the noise reduction audio determining module 320 includes:
the noise reduction intensity determining unit is used for determining the intensity of the noise reduction audio corresponding to each path of environmental audio according to the distance between the acquisition position of each path of environmental audio and the target noise reduction position;
the noise reduction phase determining unit is used for inverting each path of environment audio and determining the noise reduction audio corresponding to each path of environment audio based on the intensity of the corresponding noise reduction audio.
Optionally, the noise reduction strength determining unit includes:
the preset noise audio judging subunit is used for determining whether preset noise audio exists according to the environmental audio of each path;
the additional environmental audio determining subunit is used for determining the position of each path of additional environmental audio according to the preset noise audio if yes;
the noise reduction intensity determination subunit is used for determining the intensity of noise reduction audio corresponding to the preset noise audio according to the distance between the acquisition position of each path of additional environmental audio and the target noise reduction position.
Optionally, the noise reduction strength determining subunit is specifically configured to:
according to the relative relation between the acquisition position of the preset noise audio and the acquisition position of each path of additional environmental audio, determining the intensity of the noise reduction audio corresponding to each path of additional environmental audio based on an imaging principle.
Optionally, according to a relative relation between an acquisition position of a preset noise audio and an acquisition position of each path of additional environmental audio, determining, based on an imaging principle, an intensity of noise reduction audio corresponding to each path of additional environmental audio includes:
determining the basic noise reduction strength corresponding to each path of additional environmental audio according to the distance between the acquisition position of each path of additional environmental audio and the target noise reduction position;
determining the additional noise reduction intensity corresponding to each additional environmental audio according to the relative relation between the acquisition position of the preset noise audio and the acquisition position of each additional environmental audio;
and determining the intensity of the noise reduction audio corresponding to each path of additional environmental audio according to the basic noise reduction intensity and the additional noise reduction intensity corresponding to each path of additional environmental audio.
Optionally, the acquisition positions of the additional environmental audio are located on 3 adjacent spatial planes with the preset noise audio acquisition positions as vertices.
The spatial local noise reduction device provided by the embodiment of the application can execute the spatial local noise reduction method provided by any embodiment of the application, and has the corresponding functional modules and beneficial effects of executing the spatial local noise reduction method.
Examples
Fig. 4 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present application, and as shown in fig. 4, the electronic device includes a processor 410, a memory 420, an input device 430 and an output device 440; the number of processors 410 in the electronic device may be one or more, one processor 410 being taken as an example in fig. 4; the processor 410, memory 420, input device 430, and output device 440 in the electronic device may be connected by a bus or other means, for example in fig. 4.
The memory 420 is used as a computer readable storage medium for storing software programs, computer executable programs, and modules, such as program instructions/modules (e.g., the environmental audio acquisition module 310, the noise reduction audio determination module 320, and the noise reduction audio output module 330) corresponding to the spatial local noise reduction method in the embodiments of the present application. The processor 410 executes various functional applications of the electronic device and data processing, i.e., implements the spatial localized noise reduction method described above, by running software programs, instructions, and modules stored in the memory 420.
Memory 420 may include primarily a program storage area and a data storage area, wherein the program storage area may store an operating system, at least one application program required for functionality; the storage data area may store data created according to the use of the terminal, etc. In addition, memory 420 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 420 may further include memory remotely located relative to processor 410, which may be connected to the electronic device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 430 may be used to receive input character information and to generate key signal inputs related to user settings and function control of the electronic device. The output 440 may include a display device such as a display screen.
Examples
The fifth embodiment of the present application further provides a spatial local noise reduction system, including: the spatial local noise reduction device 510 in the above embodiment; the system also includes a multi-channel ambient microphone 520 and a multi-channel speaker 530; wherein, each path of environment microphone 520 corresponds to one path of loudspeaker 530, and the plurality of paths of environment microphones 520 and the plurality of paths of loudspeakers 530 are respectively electrically connected with the spatial local noise reduction device 510;
specifically, the installation position angle of each path of horn 530 is in parallel or perpendicular relation with the device, the height in the perpendicular direction can be about 1.6 meters, the installation height is close to the height of the human ear, noise is reduced in the hearing range of the user, noise felt by the user is minimum, and the user experiences better noise reduction effect. The multipath ambient microphone 520 is oriented in the same direction as the horn and in the same horizontal plane as the horn. Optionally, some environmental microphones 520 may be supplemented in the remaining directions to pick up preset noise audio, and the microphones are correspondingly installed to output noise reduction audio for reducing noise of the preset noise audio. The spatial local noise reduction device 510 may be an embedded board card, where the spatial local noise reduction method in the above embodiment may be operated in the spatial local noise reduction device 510, the input may be a multi-channel environmental microphone 520, and the output may be a multi-channel loudspeaker 530.
The multi-path environmental microphone 520 is used for acquiring environmental audio and sending the environmental audio to the spatial local noise reduction device 510;
the spatial local noise reduction device 510 is configured to determine noise reduction audio corresponding to each path of environmental audio according to each path of received environmental audio and a distance between an acquisition position of each path of environmental audio and a target noise reduction position, and send each path of noise reduction audio to each corresponding path of loudspeaker 530; specifically, the method for determining the noise reduction audio corresponding to each path of environmental audio is described in the above embodiment, which is further described herein.
The multi-channel loudspeaker 530 is configured to receive and output corresponding noise reduction audio, so as to implement local noise reduction for the space where the target noise reduction location is located.
The system can be configured in equipment needing voice interaction, such as customer service stations in public environments (e.g. subway stations, hospitals, high-speed rail stations, markets and the like). Through the spatial local noise reduction method, accurate noise reduction pickup is achieved, further follow-up voice recognition accuracy is improved, a low-noise environment in a certain spatial area is provided for the periphery of equipment where the spatial local noise reduction system is located through the multipath environment microphone 520, and experience of experimenters is improved.
Examples
A sixth embodiment of the present application also provides a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform a method of spatially localized noise reduction, the method comprising: acquiring each path of environment audio; determining noise reduction audios corresponding to the environmental audios according to the environmental audios of each path and the distance between the acquisition position of the environmental audios of each path and the target noise reduction position; and outputting noise reduction audio corresponding to each path of environment audio to realize local noise reduction of the space where the target noise reduction position is located.
Of course, the storage medium containing the computer executable instructions provided in the embodiments of the present application is not limited to the method operations described above, and may also perform the related operations in the spatial local noise reduction method provided in any embodiment of the present application.
From the above description of embodiments, it will be clear to a person skilled in the art that the present application may be implemented by means of software and necessary general purpose hardware, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a FLASH Memory (FLASH), a hard disk, or an optical disk of a computer, etc., including several instructions for causing an electronic device (which may be a personal computer, a server, or a network device, etc.) to perform the method described in the embodiments of the present application.
It should be noted that, in the above-mentioned embodiments of the search apparatus, each unit and module included are only divided according to the functional logic, but not limited to the above-mentioned division, as long as the corresponding functions can be implemented; in addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present application.
Note that the above is only a preferred embodiment of the present application and the technical principle applied. Those skilled in the art will appreciate that the present application is not limited to the particular embodiments described herein, but is capable of numerous obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the present application. Therefore, while the present application has been described in connection with the above embodiments, the present application is not limited to the above embodiments, but may include many other equivalent embodiments without departing from the spirit of the present application, the scope of which is defined by the scope of the appended claims.
Claims (8)
1. A method of spatially localized noise reduction, comprising:
acquiring each path of environment audio;
determining noise reduction audios corresponding to all paths of the environmental audios according to all paths of the environmental audios and the distance between the acquisition positions of all paths of the environmental audios and the target noise reduction positions; each path of the environment audio corresponds to one path of the noise reduction audio;
outputting noise reduction audio corresponding to each path of environmental audio so as to realize local noise reduction of the space where the target noise reduction position is located;
the determining the noise reduction audio corresponding to each path of the environmental audio according to the environmental audio of each path and the distance between the acquisition position of each path of the environmental audio and the target noise reduction position comprises the following steps:
determining the intensity of noise reduction audio corresponding to each path of environmental audio according to the distance between the environmental audio acquisition position and the target noise reduction position;
inverting the phase of each path of the environmental audio, and determining the noise reduction audio corresponding to each path of the environmental audio based on the intensity of the corresponding noise reduction audio;
specifically, the intensity of the noise reduction audio corresponding to each path of the environmental audio is determined by the following formula:
；
wherein,the intensity of the noise reduction audio corresponding to each path of environmental audio; />The intensity of each path of environment audio frequency; />Obtaining the distance between the position and the target noise reduction position for each path of environment audio; />The audio sequence number of each path of environment; />Is the intensity unit of the audio and satisfies +.>；
When not meetingIf the target scene has complicated sound, white noise is added for each path of environment audio; if the target scene is a meeting room scene or a man-machine interaction scene, adding pink noise for each path of environmental audio; if the target scene is a sleep service providing scene, adding rainmaking sound for each path of environmental audio; if the target scene is other scenes, adding background music for each path of the environmental audio；
The determining the intensity of the noise reduction audio corresponding to each path of the environmental audio according to the distance between the environmental audio acquisition position and the target noise reduction position comprises the following steps:
determining whether preset noise audio exists according to each path of the environmental audio;
if yes, determining the position of each path of additional environmental audio according to the preset noise audio;
and determining the intensity of the noise reduction audio corresponding to the preset noise audio according to the distance between the additional environmental audio acquisition position and the target noise reduction position.
2. The method according to claim 1, wherein the determining the intensity of the noise reduction audio corresponding to the preset noise audio according to the distance between each path of the preset noise audio acquisition position and the target noise reduction position includes:
and determining the intensity of the noise reduction audio corresponding to each path of the additional environmental audio based on an imaging principle according to the relative relation between the acquisition position of the preset noise audio and the acquisition position of each path of the additional environmental audio.
3. The method according to claim 2, wherein the determining the intensity of the noise reduction audio corresponding to each of the additional environmental audio based on the imaging principle according to the relative relation between the acquisition position of the preset noise audio and the acquisition position of each of the additional environmental audio comprises:
determining the basic noise reduction strength corresponding to each path of the additional environmental audio according to the distance between the additional environmental audio acquisition position and the target noise reduction position;
determining the additional noise reduction intensity corresponding to each additional environmental audio according to the relative relation between the acquisition position of the preset noise audio and the acquisition position of each additional environmental audio;
and determining the intensity of the noise reduction audio corresponding to each path of the additional environmental audio according to the basic noise reduction intensity and the additional noise reduction intensity corresponding to each path of the additional environmental audio.
4. The method according to claim 2, wherein the acquisition positions of the additional environmental audio are located on 3 adjacent spatial planes having the preset noise audio acquisition positions as vertices hexahedrons.
5. A spatial localized noise reduction device, comprising:
the environment audio acquisition module is used for acquiring each path of environment audio;
the noise reduction audio determining module is used for determining noise reduction audio corresponding to each path of environmental audio according to each path of environmental audio and the distance between the acquisition position of each path of environmental audio and the target noise reduction position; each path of the environment audio corresponds to one path of the noise reduction audio;
the noise reduction audio output module is used for outputting noise reduction audio corresponding to each path of environmental audio so as to realize local noise reduction of the space where the target noise reduction position is located;
wherein, the noise reduction audio frequency determining module comprises:
the noise reduction intensity determining unit is used for determining the intensity of the noise reduction audio corresponding to each path of the environmental audio according to the distance between the acquisition position of the environmental audio and the target noise reduction position;
the noise reduction phase determining unit is used for inverting each path of the environmental audio and determining the noise reduction audio corresponding to each path of the environmental audio based on the intensity of the corresponding noise reduction audio;
specifically, the intensity of the noise reduction audio corresponding to each path of the environmental audio is determined by the following formula:；
wherein,the intensity of the noise reduction audio corresponding to each path of environmental audio; />The intensity of each path of environment audio frequency; />Obtaining the distance between the position and the target noise reduction position for each path of environment audio; />The audio sequence number of each path of environment; />Is the intensity unit of the audio and satisfies +.>；
When not meetingIf the target scene has complicated sound, white noise is added for each path of environment audio; if the target scene is a meeting room scene or a man-machine interaction scene, adding pink noise for each path of environmental audio; if the target scene is a sleep service providing scene, adding rainmaking sound for each path of environmental audio; if the target scene is other scenes, adding background music for each path of the environmental audio;
the noise reduction strength determination unit includes:
the preset noise audio judging subunit is used for determining whether preset noise audio exists according to the environmental audio of each path;
the additional environmental audio determining subunit is used for determining the position of each path of additional environmental audio according to the preset noise audio if yes;
the noise reduction intensity determining subunit is used for determining the intensity of the noise reduction audio corresponding to the preset noise audio according to the distance between the additional environmental audio acquisition position and the target noise reduction position of each path.
6. A spatial localized noise reduction device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the spatial localized noise reduction method according to any one of claims 1-4 when executing the program.
7. A spatial localized noise reduction system, comprising: the spatial localized noise reduction device of claim 6; the system further includes a plurality of environmental microphones and a plurality of speakers; each path of environment microphone corresponds to one path of loudspeaker, and the plurality of paths of environment microphones and the plurality of paths of loudspeakers are respectively and electrically connected with the spatial local noise reduction equipment;
the multipath environmental microphones are used for acquiring environmental audio and sending the environmental audio to the spatial local noise reduction equipment;
the spatial local noise reduction equipment is used for determining noise reduction audios corresponding to the environmental audios according to the received environmental audios and the distance between the acquisition positions of the environmental audios and the target noise reduction positions, and sending the noise reduction audios to the corresponding loudspeakers;
the multipath loudspeakers are used for receiving and outputting corresponding noise reduction audio frequency so as to realize local noise reduction of the space where the target noise reduction position is located.
8. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the spatial localized noise reduction method according to any one of claims 1-4.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011044846A (en) * | 2009-08-20 | 2011-03-03 | Sanyo Electric Co Ltd | Image processor and imaging apparatus |
| CN102438195A (en) * | 2011-09-29 | 2012-05-02 | 林建辉 | Timesharing simulation system for passenger compartment noise sound field of high-speed vehicle and simulation methodsystem thereof |
| CN111754969A (en) * | 2020-07-06 | 2020-10-09 | 歌尔科技有限公司 | Noise reduction method and device, electronic equipment and noise reduction system |
| CN112767908A (en) * | 2020-12-29 | 2021-05-07 | 安克创新科技股份有限公司 | Active noise reduction method based on key sound recognition, electronic equipment and storage medium |
| CN113949955A (en) * | 2020-07-16 | 2022-01-18 | Oppo广东移动通信有限公司 | Noise reduction processing method and device, electronic equipment, earphone and storage medium |
| CN114283773A (en) * | 2021-12-09 | 2022-04-05 | 青岛海尔科技有限公司 | Method and apparatus for reducing environmental noise for voice device, and storage medium |
| CN115527517A (en) * | 2022-09-16 | 2022-12-27 | 科大讯飞股份有限公司 | Indoor noise reduction system, method, device, equipment and readable storage medium |
| CN116033311A (en) * | 2021-10-26 | 2023-04-28 | 珠海市杰理科技股份有限公司 | Active noise reduction method, device, circuit, equipment and system |
-
2023
- 2023-08-10 CN CN202311000984.9A patent/CN116741194B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011044846A (en) * | 2009-08-20 | 2011-03-03 | Sanyo Electric Co Ltd | Image processor and imaging apparatus |
| CN102438195A (en) * | 2011-09-29 | 2012-05-02 | 林建辉 | Timesharing simulation system for passenger compartment noise sound field of high-speed vehicle and simulation methodsystem thereof |
| CN111754969A (en) * | 2020-07-06 | 2020-10-09 | 歌尔科技有限公司 | Noise reduction method and device, electronic equipment and noise reduction system |
| CN113949955A (en) * | 2020-07-16 | 2022-01-18 | Oppo广东移动通信有限公司 | Noise reduction processing method and device, electronic equipment, earphone and storage medium |
| CN112767908A (en) * | 2020-12-29 | 2021-05-07 | 安克创新科技股份有限公司 | Active noise reduction method based on key sound recognition, electronic equipment and storage medium |
| CN116033311A (en) * | 2021-10-26 | 2023-04-28 | 珠海市杰理科技股份有限公司 | Active noise reduction method, device, circuit, equipment and system |
| CN114283773A (en) * | 2021-12-09 | 2022-04-05 | 青岛海尔科技有限公司 | Method and apparatus for reducing environmental noise for voice device, and storage medium |
| CN115527517A (en) * | 2022-09-16 | 2022-12-27 | 科大讯飞股份有限公司 | Indoor noise reduction system, method, device, equipment and readable storage medium |
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