WO2023087572A1 - 声学装置及其传递函数确定方法 - Google Patents
声学装置及其传递函数确定方法 Download PDFInfo
- Publication number
- WO2023087572A1 WO2023087572A1 PCT/CN2022/079000 CN2022079000W WO2023087572A1 WO 2023087572 A1 WO2023087572 A1 WO 2023087572A1 CN 2022079000 W CN2022079000 W CN 2022079000W WO 2023087572 A1 WO2023087572 A1 WO 2023087572A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transfer function
- signal
- detector
- acoustic device
- sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
-
- 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
- G10K11/17813—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 acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
- G10K11/17817—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 acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms between the output signals and the error signals, i.e. secondary path
-
- 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
-
- 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
- G10K11/17813—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 acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
-
- 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
-
- 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
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17853—Methods, e.g. algorithms; Devices of the filter
-
- 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
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17857—Geometric disposition, e.g. placement of microphones
-
- 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
- G10K11/1787—General system configurations
- G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1008—Earpieces of the supra-aural or circum-aural type
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1041—Mechanical or electronic switches, or control elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers
- H04R3/04—Circuits for transducers for correcting frequency response
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
- G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/10—Applications
- G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
- G10K2210/1082—Microphones, e.g. systems using "virtual" microphones
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3024—Expert systems, e.g. artificial intelligence
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3038—Neural networks
-
- 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
- G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
- G10K2210/30—Means
- G10K2210/301—Computational
- G10K2210/3048—Pretraining, e.g. to identify transfer functions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1058—Manufacture or assembly
- H04R1/1075—Mountings of transducers in earphones or headphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/01—Hearing devices using active noise cancellation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/09—Non-occlusive ear tips, i.e. leaving the ear canal open, for both custom and non-custom tips
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/13—Hearing devices using bone conduction transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers
- H04R3/005—Circuits for transducers for combining the signals of two or more microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers
- H04R3/12—Circuits for transducers for distributing signals to two or more loudspeakers
Definitions
- connection may refer to a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be two A communication within an element or an interaction relationship between two elements, unless expressly defined otherwise.
- connection may refer to a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be two A communication within an element or an interaction relationship between two elements, unless expressly defined otherwise.
- the processor can accurately estimate the target spatial position by using the transfer function between the sounding unit, the first detector, the noise source, and the target spatial position and/or the mapping relationship between each transfer function
- the second residual signal at the location and then accurately control the sound unit to generate the noise reduction signal, effectively reduce the environmental noise at the user's ear canal (for example, the target spatial position), realize the active noise reduction of the acoustic device, and improve the user's performance during use.
- the amplitude of the ambient noise at the target spatial location and the amplitude of the noise reduction signal can be within the preset amplitude range.
- the processor 130 can respectively obtain the first transfer function between the sound emitting unit 110 and the first detector 120, the second transfer function between the sound emitting unit 110 and the target spatial position, the relationship between the environmental noise source and the first A third transfer function between the detectors 120, a fourth transfer function between the ambient noise source and the spatial location of the object.
- the processor 130 may estimate a second residual signal at the target spatial location based on the first transfer function, the second transfer function, the third transfer function, the fourth transfer function, the first sound signal and the first residual signal.
- the processor 130 does not need to obtain the third transfer function and the fourth transfer function separately, but only needs to obtain the ratio between the fourth transfer function and the third transfer function to determine the second residual signal.
- the processor 130 can obtain the first transfer function between the sounding unit 110 and the first detector 120, the second transfer function between the sounding unit 110 and the target spatial position, and the A fifth transfer function (eg, the ratio between the fourth transfer function and the third transfer function) of the relationship between the detector 120 and the object's spatial position.
- the processor 130 may estimate a second residual signal at the target spatial location based on the first transfer function, the second transfer function, the fifth transfer function, the first sound signal and the first residual signal.
- the processor 130 may only acquire the first transfer function between the sound emitting unit 110 and the first detector 120, and further estimate the target space based on the first transfer function, the first sound signal and the first residual signal.
- the second residual signal at position For more details about the processor 130 estimating the second residual signal at the target spatial position, reference may be made to other positions in this description (such as the part of FIG. 3 and its related discussions), which will not be described in detail here.
- the processor 130 may control the switch state of the bone conduction microphone and/or the air conduction microphone in the third detector based on the working state of the acoustic device 100 .
- the working state of the acoustic device 100 may refer to a usage state used by the user wearing the acoustic device 100 .
- the working state of the acoustic device 100 may include, but not limited to, a call state, a non-call state (for example, a music playing state), a voice message sending state, and the like.
- the processor 130 may control the bone conduction microphone in the third detector to maintain the working state.
- the sound pressure of the ambient noise can reflect the intensity of the ambient noise.
- the preset threshold here may be a value pre-stored in the acoustic device 100 , for example, 50dB, 60dB or 70dB or any other value.
- the processor 130 can control the bone conduction microphone to keep working by sending a control signal.
- different users may have different organizational forms (for example, the size of the head is different, and the composition of human tissues such as muscle tissue, fat tissue, and bone is different), and the corresponding first transfer function, second transfer function, third The transfer function, the fourth transfer function may be different.
- Different wearing postures may refer to the different wearing positions of the user when wearing the acoustic device 100, the wearing direction of the acoustic device 100, the force between the acoustic device 100 and the user, etc., and the corresponding first transfer function, second transfer function, and third transfer function , the fourth transfer function can also be different.
- the acoustic device 100 may include a housing structure 170 .
- the housing structure 170 may be configured to carry other components of the acoustic device 100 (eg, the sound emitting unit 110, the first detector 120, the processor 130, the distance sensor 140, the memory 150, the signal transceiver 160, etc.).
- the housing structure 170 may be a closed or semi-closed structure with a hollow interior, and other components of the acoustic device 100 are located in or on the housing structure.
- the shape of the housing structure may be a regular or irregular three-dimensional structure such as a cuboid, cylinder, or truncated cone.
- the housing structure may be located near the user's ear.
- the shell structure may be located on a peripheral side (eg, front side or back side) of the pinna of the user.
- the housing structure may sit over the user's ear but not block or cover the user's ear canal.
- the acoustic device 100 may be a bone conduction earphone, and at least one side of the shell structure may be in contact with the user's skin.
- Acoustic drivers eg, vibrating speakers
- in bone conduction earphones convert audio signals into mechanical vibrations that can be transmitted to the user's auditory nerves through the shell structure and the user's bones.
- the rigid part may be made of rigid material (for example, plastic or metal), and the rigid part may be fixed with the housing structure 170 of the acoustic device 100 through physical connection (for example, clamping, threaded connection, etc.).
- the flexible portion may be made of elastic material (eg, cloth, composite, or/and neoprene).
- securing structure 180 may be a neck strap configured to be worn around the neck/shoulder area.
- the fixing structure 180 may be a spectacle arm, which, as a part of the glasses, is erected on the user's ear.
- the first detector 220 may be located on the side of the sound emitting unit 210 facing the user's ear canal. In some embodiments, the ratio of the acoustic path from the first detector 220 to the target spatial position A to the acoustic path from the first detector 220 to the sound generating unit 210 may be between 0.5-20. In some embodiments, the acoustic path between the first detector 220 and the target spatial location A may be 5mm ⁇ 50mm. In some embodiments, the acoustic path between the first detector 220 and the target spatial location A may be 15mm ⁇ 40mm. In some embodiments, the acoustic path between the first detector 220 and the target spatial location A may be 25mm ⁇ 35mm. In some embodiments, the number of microphones in the first detector 220 and/or the distribution positions relative to the user's ear canal can be adjusted according to the acoustic path between the first detector 220 and the target spatial position A.
- step 310 the first sound signal generated by the sound generating unit 110 according to the noise reduction control signal may be acquired.
- step 310 may be performed by the processor 130 .
- the transfer function between the environmental noise source and the first detector 120 may characterize the transmission quality of the environmental noise during the transmission process from the environmental noise source to the first detector 120 or the first detector 120 obtained by the first detector 120. A relationship between the residual signal and the ambient noise produced by the ambient noise source.
- the processor 130 can directly determine the first transfer function, the second transfer function, third transfer function and fourth transfer function. Specifically, different distances between the acoustic device 100 and the user's ear and/or different relative positions between the acoustic device 100 and the user's ear may correspond to different first transfer functions, second transfer functions, third transfer functions, and fourth transfer functions .
- the processor 130 may directly call the first transfer function, the second transfer function, the third transfer function and the fourth transfer function corresponding to the distance data and/or position data acquired by the sensor.
- the processor 130 may determine the second transfer function according to the first transfer function and the first mapping relationship between the first transfer function and the second transfer function, and determine the second transfer function according to the fourth transfer function and the third
- the ratio between the transfer functions and the second mapping relationship between the first transfer functions determines the fifth transfer function (that is, the ratio of the fourth transfer function to the third transfer function).
- the process 300 may be stored in a computer-readable storage medium in the form of computer instructions.
- the above noise reduction method can be realized when the computer instructions are executed.
- Fig. 4 is an exemplary flowchart of a method for determining a transfer function of an acoustic device according to some embodiments of the present application.
- the acoustic device may at least include a sound emitting unit, a first detector, a processor and a fixed structure.
- the fixing structure can fix the acoustic device near the user's ear and not block the user's ear canal, and make the target spatial position (such as the user's tympanic membrane or basilar membrane) compared with the first detection The device is closer to the user's ear canal.
- the first transfer function H SM is positively related to the ratio of the second signal M 0 to the first signal S 0 .
- the relationship of the first transfer function H SM to the first signal S 0 and the second signal M 0 may satisfy:
- the processor 130 may acquire a third signal picked up by the second detector.
- the second detector can be set at the target spatial position to simulate the sound signal picked up by the tympanic membrane (or basilar membrane) of the human ear.
- the target spatial position is closer to the tester's ear canal than the first detector 120 .
- the target spatial location may be the location of the tester's ear canal, tympanic membrane or basilar membrane.
- the target spatial position may be the tester's eardrum or near it.
- the target spatial location may be at or near the tester's basilar membrane.
- the second detector can be a miniature microphone (eg, MEMS microphone), which can enter the user's ear canal and collect sound inside the ear canal.
- the processor 130 may acquire the fourth signal picked up by the first detector 120 and the fifth signal picked up by the second detector in a scene where there is ambient noise and the sound unit 110 does not emit any signal.
- Ambient noise may be generated by one or more ambient noise sources.
- the ambient noise source can be any sound source except the sounding unit.
- the environmental noise N 0 can be obtained by simulating other sound-generating devices in the test environment.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Headphones And Earphones (AREA)
Abstract
Description
Claims (18)
- 一种声学装置,包括发声单元、第一探测器、处理器以及固定结构,其中,所述发声单元用于根据降噪控制信号产生第一声音信号;所述第一探测器用于获取第一残余信号,所述第一残余信号包括环境噪声和所述第一声音信号在所述第一探测器处叠加形成的残余噪声信号;所述处理器用于根据所述第一声音信号和所述第一残余信号估计目标空间位置处的第二残余信号,并根据所述第二残余信号更新所述降噪控制信号;以及所述固定结构用于将所述声学装置固定在用户耳朵附近且不堵塞用户耳道的位置,且所述目标空间位置相比于所述第一探测器更加靠近所述用户耳道。
- 根据权利要求1所述的声学装置,其中,所述根据所述第一声音信号和所述第一残余信号估计目标空间位置处的第二残余信号包括:获取所述发声单元与所述第一探测器之间的第一传递函数、所述发声单元与所述目标空间位置之间的第二传递函数、环境噪声源与所述第一探测器之间的第三传递函数、所述环境噪声源与所述目标空间位置之间的第四传递函数;以及基于所述第一传递函数、所述第二传递函数、所述第三传递函数、所述第四传递函数、所述第一声音信号以及所述第一残余信号,估计所述目标空间位置处的所述第二残余信号。
- 根据权利要求2所述的声学装置,其中,所述获取所述发声单元与所述第一探测器之间的第一传递函数、所述发声单元与所述目标空间位置之间的第二传递函数、环境噪声源与所述第一探测器之间的第三传递函数、所述环境噪声源与所述目标空间位置之间的第四传递函数包括:获取所述第一传递函数;以及根据所述第一传递函数,以及所述第一传递函数与所述第二传递函数、所述第三传递函数、所述第四传递函数之间的映射关系,确定所述第二传递函数、所述第三传递函数和所述第四传递函数。
- 根据权利要求3所述的声学装置,其中,所述第一传递函数与所述第二传递函数、所述第三传递函数、所述第四传递函数之间的映射关系基于所述声学装置在不同佩戴场景下的测试数据生成。
- 根据权利要求2所述的声学装置,其中,所述获取所述发声单元与所述第一探测器之间的第一传递函数、所述发声单元与所述目标空间位置之间的第二传递函数、环境噪声源与所述第一探测器之间的第三传递函数、所述环境噪声源与所述目标空间位置之间的第四传递函数包括:获取所述第一传递函数;以及将所述第一传递函数输入训练好的神经网络,获取所述训练好的神经网络的输出作为所述第二传递函数、所述第三传递函数、所述第四传递函数。
- 根据权利要求2至5中任一所述的声学装置,其中,所述获取所述第一传递函数包括:根据所述降噪控制信号和所述第一残余信号,计算所述第一传递函数。
- 根据权利要求2所述的声学装置,其中,所述声学装置还包括距离传感器,所述距离传感器用于检测所述声学装置到所述用户耳朵的距离,所述处理器进一步用于根据所述距离,确定所述第一传递函数、所述第二传递函数、所述第三传递函数、及所述第四传递函数。
- 根据权利要求1所述的声学装置,其中,所述根据所述第一声音信号和所述第一残余信号估计目标空间位置处的第二残余信号包括:获取所述发声单元与所述第一探测器之间的第一传递函数、所述发声单元与所述目标空间位置之间的第二传递函数、以及反映环境噪声源与所述第一探测器、所述目标空间位置之间关系的第五传递函数;以及基于所述第一传递函数、所述第二传递函数、所述第五传递函数、所述第一声音信号以及所述第一残余信号,估计所述目标空间位置处的第二残余信号。
- 根据权利要求8所述的声学装置,其中,所述第一传递函数与所述第二传递函数之间具有第一映射关系;以及所述第五传递函数与所述第一传递函数之间具有第二映射关系。
- 根据权利要求1所述的声学装置,其中,所述根据所述第一声音信号和所述第一残余信号估计目标空间位置处的第二残余信号包括:获取所述发声单元与所述第一探测器之间的第一传递函数;以及基于所述第一传递函数、所述第一声音信号以及所述第一残余信号,估计所述目标空间位置处的第二残余信号。
- 根据权利要求1至10中任一所述的声学装置,其中,所述目标空间位置为所述用户的鼓膜位置。
- 一种声学装置的传递函数确定方法,所述声学装置包括发声单元、第一探测器、处理器以及固定结构,所述固定结构用于将所述声学装置固定在测试者耳朵附近且不堵塞测试者耳道的位置,其中,所述方法包括:在不存在环境噪声的场景下,获取所述发声单元基于降噪控制信号发出的第一信号,以及所述第一探测器拾取的第二信号,其中,所述第二信号包括所述第一信号传递至所述第一探测器处的残余噪声信号;基于所述第一信号及所述第二信号,确定所述发声单元与所述第一探测器之间的第一传递函数;获取第二探测器获取的第三信号,其中,所述第二探测器设置于目标空间位置处,所述目标空间位置相比于所述第一探测器更加靠近所述测试者耳道,所述第三信号包括所述第一信号传递至所述目标空间位置处的残余噪声信号;基于所述第一信号及所述第三信号,确定所述发声单元与所述目标空间位置之间的第二传递函数;在存在所述环境噪声且所述发声单元不发出任何信号的场景下,获取所述第一探测器拾取的第四信号,以及所述第二探测器拾取的第五信号;基于所述环境噪声及所述第四信号,确定环境噪声源与所述第一探测器之间的第三传递函数;以及基于所述环境噪声及所述第五信号,确定所述环境噪声源与所述目标空间位置之间的第四传递函数。
- 根据权利要求12所述的方法,还包括:针对不同的佩戴场景或不同的测试者,确定多组传递函数,其中,每组传递函数包括对应的第一传递函数、第二传递函数、第三传递函数以及第四传递函数;以及基于所述多组传递函数,确定所述第一传递函数与所述第二传递函数、所述第三传递函数、所述第四传递函数之间的关系。
- 根据权利要求13所述的方法,其中,所述基于所述多组传递函数,确定所述第一传递函数与所述第二传递函数、所述第三传递函数、所述第四传递函数之间的关系包括:将所述多组传递函数作为训练样本,训练神经网络;以及将训练好的神经网络作为所述第一传递函数与所述第二传递函数、所述第三传递函数、所述第四传递函数之间的关系。
- 根据权利要求13或14所述的方法,其中,所述第一传递函数与所述第二传递函数、所述第三传递函数、所述第四传递函数之间的关系包括:所述第一传递函数与所述第二传递函数之间的第一映射关系;以及所述第三传递函数和所述第四传递函数之间的比值与所述第一传递函数之间的第二映射关系。
- 根据权利要求12至15中任一所述的方法,其中,所述第一传递函数与所述第二信号和所述第一信号的比值正相关;所述第二传递函数与所述第三信号和所述第一信号的比值正相关;所述第三传递函数与所述第四信号和所述环境噪声的比值正相关;以及所述第四传递函数与所述第五信号和所述环境噪声的比值正相关。
- 根据权利要求13所述的方法,其中,所述基于所述多组传递函数,确定所述第一传递函数与所述第二传递函数、所述第三传递函数、所述第四传递函数之间的关系包括:针对所述不同的佩戴场景或所述不同的测试者,获取所述声学装置到对应测试者耳朵的距离;以及基于所述距离及所述多组传递函数,确定所述第一传递函数与所述第二传递函数、所述第三传递函数、所述第四传递函数之间的关系。
- 根据权利要求12所述的方法,其中,所述目标空间位置为所述测试者的鼓膜位置。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020237044934A KR102834692B1 (ko) | 2021-11-19 | 2022-03-03 | 음향장치 및 그 전달함수 확정방법 |
| JP2024502215A JP7719546B2 (ja) | 2021-11-19 | 2022-03-03 | 音響装置及びその伝達関数の決定方法 |
| CN202280028281.4A CN117178565A (zh) | 2021-11-19 | 2022-03-03 | 声学装置及其传递函数确定方法 |
| EP22894118.3A EP4325885A4 (en) | 2021-11-19 | 2022-03-03 | ACOUSTIC APPARATUS AND ITS TRANSFER FUNCTION DETERMINATION METHOD |
| US18/508,417 US20240078991A1 (en) | 2021-11-19 | 2023-11-14 | Acoustic devices and methods for determining transfer functions thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111408329.8 | 2021-11-19 | ||
| CN202111408329 | 2021-11-19 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/508,417 Continuation US20240078991A1 (en) | 2021-11-19 | 2023-11-14 | Acoustic devices and methods for determining transfer functions thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023087572A1 true WO2023087572A1 (zh) | 2023-05-25 |
Family
ID=86351257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2022/079000 Ceased WO2023087572A1 (zh) | 2021-11-19 | 2022-03-03 | 声学装置及其传递函数确定方法 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20240078991A1 (zh) |
| EP (1) | EP4325885A4 (zh) |
| JP (1) | JP7719546B2 (zh) |
| KR (1) | KR102834692B1 (zh) |
| CN (2) | CN116156372B (zh) |
| TW (1) | TWI850844B (zh) |
| WO (1) | WO2023087572A1 (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117174100B (zh) * | 2023-10-27 | 2024-04-05 | 荣耀终端有限公司 | 骨导语音的生成方法、电子设备及存储介质 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140044275A1 (en) * | 2012-08-13 | 2014-02-13 | Apple Inc. | Active noise control with compensation for error sensing at the eardrum |
| CN106792305A (zh) * | 2015-11-19 | 2017-05-31 | 鹦鹉无人机股份有限公司 | 音频头戴式耳机 |
| CN108200492A (zh) * | 2017-07-12 | 2018-06-22 | 北京金锐德路科技有限公司 | 语音控制优化方法、装置以及集成入耳式麦克风的耳机和穿戴设备 |
| CN111935589A (zh) * | 2020-09-28 | 2020-11-13 | 深圳市汇顶科技股份有限公司 | 主动降噪的方法、装置、电子设备和芯片 |
| CN112637724A (zh) * | 2020-12-29 | 2021-04-09 | 西安讯飞超脑信息科技有限公司 | 耳机降噪方法、系统及存储介质 |
| CN112992114A (zh) * | 2019-12-12 | 2021-06-18 | 深圳市韶音科技有限公司 | 噪声控制系统和方法 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8649526B2 (en) * | 2010-09-03 | 2014-02-11 | Nxp B.V. | Noise reduction circuit and method therefor |
| US9037458B2 (en) * | 2011-02-23 | 2015-05-19 | Qualcomm Incorporated | Systems, methods, apparatus, and computer-readable media for spatially selective audio augmentation |
| JP5829052B2 (ja) * | 2011-05-31 | 2015-12-09 | 住友理工株式会社 | 能動型消音装置 |
| EP3273608B1 (en) * | 2016-07-20 | 2022-01-12 | Sennheiser Electronic GmbH & Co. KG | An adaptive filter unit for being used as an echo canceller |
| US10075783B2 (en) * | 2016-09-23 | 2018-09-11 | Apple Inc. | Acoustically summed reference microphone for active noise control |
| JP7070576B2 (ja) * | 2017-09-13 | 2022-05-18 | ソニーグループ株式会社 | 音響処理装置及び音響処理方法 |
| EP3644307A1 (en) * | 2018-10-23 | 2020-04-29 | AMS Sensors UK Limited | Tuning method, manufacturing method, computer-readable storage medium and tuning system |
| US11197083B2 (en) * | 2019-08-07 | 2021-12-07 | Bose Corporation | Active noise reduction in open ear directional acoustic devices |
| EP3799031B1 (en) * | 2019-09-30 | 2022-11-30 | Ams Ag | Audio system and signal processing method for an ear mountable playback device |
| US11386881B2 (en) * | 2020-03-27 | 2022-07-12 | Google Llc | Active noise cancelling based on leakage profile |
| WO2022020122A1 (en) * | 2020-07-21 | 2022-01-27 | Starkey Laboratories, Inc. | Ear-wearable device with active noise cancellation system that uses internal and external microphones |
| CN112053698A (zh) * | 2020-07-31 | 2020-12-08 | 出门问问信息科技有限公司 | 语音转换方法及装置 |
| EP4292077A4 (en) * | 2021-02-14 | 2025-04-09 | Silentium Ltd. | Apparatus, system, and method for active acoustic control on an open-back acoustic headphone |
| CN113421540B (zh) * | 2021-07-26 | 2023-10-31 | 北京安声浩朗科技有限公司 | 主动降噪方法、主动降噪装置及半入耳式主动降噪耳机 |
| US12302057B1 (en) * | 2021-08-27 | 2025-05-13 | Apple Inc. | Adaptive virtual microphone for earbuds |
-
2022
- 2022-03-03 CN CN202210208101.2A patent/CN116156372B/zh active Active
- 2022-03-03 CN CN202280028281.4A patent/CN117178565A/zh active Pending
- 2022-03-03 EP EP22894118.3A patent/EP4325885A4/en active Pending
- 2022-03-03 WO PCT/CN2022/079000 patent/WO2023087572A1/zh not_active Ceased
- 2022-03-03 JP JP2024502215A patent/JP7719546B2/ja active Active
- 2022-03-03 KR KR1020237044934A patent/KR102834692B1/ko active Active
- 2022-11-11 TW TW111143190A patent/TWI850844B/zh active
-
2023
- 2023-11-14 US US18/508,417 patent/US20240078991A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140044275A1 (en) * | 2012-08-13 | 2014-02-13 | Apple Inc. | Active noise control with compensation for error sensing at the eardrum |
| CN106792305A (zh) * | 2015-11-19 | 2017-05-31 | 鹦鹉无人机股份有限公司 | 音频头戴式耳机 |
| CN108200492A (zh) * | 2017-07-12 | 2018-06-22 | 北京金锐德路科技有限公司 | 语音控制优化方法、装置以及集成入耳式麦克风的耳机和穿戴设备 |
| CN112992114A (zh) * | 2019-12-12 | 2021-06-18 | 深圳市韶音科技有限公司 | 噪声控制系统和方法 |
| CN111935589A (zh) * | 2020-09-28 | 2020-11-13 | 深圳市汇顶科技股份有限公司 | 主动降噪的方法、装置、电子设备和芯片 |
| CN112637724A (zh) * | 2020-12-29 | 2021-04-09 | 西安讯飞超脑信息科技有限公司 | 耳机降噪方法、系统及存储介质 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4325885A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| TW202322637A (zh) | 2023-06-01 |
| CN117178565A (zh) | 2023-12-05 |
| KR102834692B1 (ko) | 2025-07-15 |
| EP4325885A1 (en) | 2024-02-21 |
| CN116156372A (zh) | 2023-05-23 |
| JP7719546B2 (ja) | 2025-08-06 |
| TWI850844B (zh) | 2024-08-01 |
| KR20240012580A (ko) | 2024-01-29 |
| CN116156372B (zh) | 2025-12-16 |
| JP2024527782A (ja) | 2024-07-26 |
| EP4325885A4 (en) | 2024-10-16 |
| US20240078991A1 (en) | 2024-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI851997B (zh) | 聲學裝置及降噪方法 | |
| US12284485B2 (en) | Hearing aid device comprising a sensor member | |
| CN115240697B (zh) | 声学装置 | |
| JP6972814B2 (ja) | イヤホン装置、ヘッドホン装置及び方法 | |
| TWI878729B (zh) | 開放式聲學裝置 | |
| CN113329312A (zh) | 确定话轮转换的助听器 | |
| CN114630223A (zh) | 一种优化听戴式设备功能的方法及听戴式设备 | |
| CN114567845A (zh) | 包括声学传递函数数据库的助听器系统 | |
| CN116711326A (zh) | 一种开放式声学装置 | |
| TWI850844B (zh) | 聲學裝置及其傳遞函數確定方法 | |
| HK40086106A (zh) | 一种开放式声学装置 | |
| HK40077980A (zh) | 声学装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22894118 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2022894118 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2022894118 Country of ref document: EP Effective date: 20231116 |
|
| ENP | Entry into the national phase |
Ref document number: 20237044934 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1020237044934 Country of ref document: KR |
|
| ENP | Entry into the national phase |
Ref document number: 2024502215 Country of ref document: JP Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |