WO2021184501A1 - 音频输出设备及其漏音消除方法 - Google Patents

音频输出设备及其漏音消除方法 Download PDF

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Publication number
WO2021184501A1
WO2021184501A1 PCT/CN2020/088333 CN2020088333W WO2021184501A1 WO 2021184501 A1 WO2021184501 A1 WO 2021184501A1 CN 2020088333 W CN2020088333 W CN 2020088333W WO 2021184501 A1 WO2021184501 A1 WO 2021184501A1
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Prior art keywords
audio
file
audio output
output device
audio file
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PCT/CN2020/088333
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English (en)
French (fr)
Inventor
田文强
庄嘉宜
余庆华
王泷
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锐迪科微电子(上海)有限公司
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Priority to US17/912,668 priority Critical patent/US20230171539A1/en
Publication of WO2021184501A1 publication Critical patent/WO2021184501A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S7/00Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30Control circuits for electronic adaptation of the sound field
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods 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
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods 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
    • G10K11/1785Methods, e.g. algorithms; Devices
    • G10K11/17857Geometric disposition, e.g. placement of microphones
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00Methods 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
    • G10K11/16Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178Methods 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
    • G10K11/1787General system configurations
    • G10K11/17873General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1041Mechanical or electronic switches, or control elements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • H04R3/02Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • H04R3/12Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10Applications
    • G10K2210/108Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081Earphones, e.g. for telephones, ear protectors or headsets
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10KSOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30Means
    • G10K2210/321Physical
    • G10K2210/3216Cancellation means disposed in the vicinity of the source
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00Signal processing covered by H04R, not provided for in its groups
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2430/00Signal processing covered by H04R, not provided for in its groups
    • H04R2430/01Aspects of volume control, not necessarily automatic, in sound systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00Details 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
    • H04R2460/01Hearing devices using active noise cancellation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10General applications
    • H04R2499/11Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

  • This application relates to an audio output device, and in particular to an audio output device and a method for eliminating sound leakage.
  • the purpose of this application is to provide an audio output device and a method for eliminating sound leakage to solve the above technical problems.
  • an audio output device includes: a processing unit, a first audio output unit, and a second audio output unit; the processing unit and the first audio output unit are respectively Electrically connected to the second audio output unit; the processing unit is used to generate a second audio file based on the first audio file and the parameter adjustment value; the processing unit is used to control the first audio output unit to play the first audio file The first audio is generated, and the second audio output unit is synchronously controlled to play the second audio file to generate the second audio, wherein the first audio is transmitted to the user’s ears for the user to listen to, and the second audio is used for In order to eliminate the audio leakage of the first audio to the outside of the audio output device in the process of transmitting the first audio to the user's ears.
  • the present application also provides a method for eliminating sound leakage, which is applied to an audio output device, and the method for eliminating sound leakage includes the steps:
  • the audio output device and the method for eliminating sound leakage provided by the present application adopt the second audio output from the second audio output unit to eliminate the audio leakage from the first audio output unit to the outside of the audio output device, thereby eliminating sound leakage.
  • FIG. 1 is a schematic diagram of modules of an audio output device in the first embodiment of the application.
  • FIG. 2 is a schematic flowchart of the method for eliminating sound leakage in the first embodiment of the application.
  • the audio output devices involved in the embodiments of the present application may include speakers, earphones, and various handheld devices with audio output functions, vehicle-mounted devices, wearable devices, and so on.
  • audio output devices For ease of description, the devices mentioned above are collectively referred to as audio output devices.
  • FIG. 1 is a schematic diagram of modules of the audio output device 100 in the first embodiment of the application.
  • the audio output device 100 includes a first audio output unit 10, a second audio output unit 30 and a processing unit 50.
  • the processing unit 50 is connected to the first audio output unit 10 and the second audio output unit 30 respectively.
  • the processing unit 50 is used to control the first audio output unit 10 to play a first audio file to generate first audio
  • the processing unit 50 is used to generate a second audio file based on the first audio file and the parameter adjustment value
  • the second audio output unit 30 is synchronously controlled to play the second audio file to generate second audio.
  • the first audio is used to transmit to the user's ears for the user to listen to
  • the second audio is used to eliminate audio that leaks to the outside of the audio output device 100 during the transmission of the first audio to the user's ears.
  • the audio output device 100 and the method for eliminating sound leakage provided in the present application adopt the second audio to eliminate the audio that leaks from the first audio to the outside of the audio output device 100 and eliminate the sound leakage.
  • the first audio output unit 10 and the second audio output unit 30 are arranged opposite to each other. It can be understood that in other embodiments, the first audio output unit 10 and the second audio output unit 30 may also have other positional relationships, which are not limited herein.
  • the first audio output unit 10 and the second audio output unit 30 may be, but not limited to, sound generating units such as speakers.
  • the first audio output unit 10 faces the user’s ears and is used to transmit the first audio to the user’s ears for the user to listen to;
  • the second audio output unit 30 faces away from the user’s ears and is used to generate a second audio output.
  • the first audio is transmitted to the user's ears and the audio leaked to the outside of the audio output device 100 is muted. Thus, the leakage of sound is eliminated.
  • the processing unit 50 determines the audio leaked to the outside of the audio output device 100 according to the first audio file and its playback parameters, and according to the first audio and the leaked audio to the audio output device 100 external audio determines the parameter adjustment value, and generates a second audio file according to the first audio file and the parameter adjustment value.
  • the processing unit 50 determines the spectrum curve of the audio leaking to the outside of the audio output device 100 according to the first audio file and its playback parameters, and according to the spectrum curve and the leakage of the first audio file.
  • the frequency spectrum curve of the audio to the outside of the audio output device 100 determines the parameter adjustment value, and a second audio file is generated according to the first audio file and the parameter adjustment value.
  • the frequency spectrum curve is a curve with frequency as the horizontal axis and amplitude and phase as the vertical axis.
  • the audio output device 100 since the audio output device 100 cannot completely fit the user's ears, part of the first audio will leak to the audio output device 100 during the transmission of the first audio to the user's ears. Externally, the greater the loudness of the first audio, the greater the loudness of the audio leaking to the outside of the audio output device 100, but the loudness of the audio leaking to the outside of the audio output device 100 is always smaller than the loudness of the first audio. Therefore, the audio output device 100 pre-stores a corresponding relationship table, and the corresponding relationship table includes the corresponding relationship between the first audio file and its playback parameter and the parameter adjustment value.
  • the corresponding relationship may be set according to the corresponding relationship between the first audio file and its playback parameter in the history record and the parameter adjustment value; of course, the corresponding relationship may also be set according to the audio output device 100
  • the structure, material, and other performance estimates are set by using the playback parameters to set the audio parameters that may be exposed when the first audio file is played.
  • the first audio file may be, but not limited to, stored in the storage unit 70 of the audio output device 100.
  • the first audio file may be an audio file sent by an external device to the audio output device 100 and stored in its storage unit 70, or an audio file stored locally in the storage unit 70.
  • the first audio file may be divided into several audio segments, for example, according to the playback order, the first segment, the second segment, ..., the first segment N fragment.
  • the second audio file can also be divided into several audio segments, for example, according to the playback order, the first segment, the second segment, ..., the Nth segment are in sequence.
  • the audio segments of the first audio file correspond to the audio segments of the second audio file one-to-one, that is, the first segment of the first audio file corresponds to the first segment of the second audio file, and so on ,
  • the Nth segment of the first audio file corresponds to the Nth segment of the second audio file.
  • the first audio may include, but is not limited to, three parameters: period, phase, and amplitude.
  • the second audio frequency may include, but is not limited to, three parameters: period, phase, and amplitude.
  • the amplitude and period of the audio leaked to the outside of the audio output device during the transmission of the first audio to the user's ears are the same as the amplitude and period of the second audio;
  • the phase of the audio leaking to the outside of the audio output device during the transmission of the first audio to the user's ear is opposite to the phase of the second audio.
  • the parameter adjustment value includes one or more of an amplitude adjustment value and a phase adjustment value.
  • the audio output device 100 further includes a first digital-to-analog conversion circuit 20.
  • the first digital-to-analog conversion circuit 20 is located between the processing unit 50 and the first audio output unit 10.
  • the first digital-to-analog conversion circuit 20 is used to perform digital-to-analog conversion on the first audio file to convert it into an analog signal suitable for the first audio output unit 10.
  • the audio output device 100 further includes a second digital-to-analog conversion circuit 40.
  • the second digital-to-analog conversion circuit 40 is located between the processing unit 50 and the second audio output unit 30.
  • the second digital-to-analog conversion circuit 40 is used to convert the second audio into an analog signal suitable for the second audio output unit 30.
  • the audio output device 100 further includes an audio collection unit 60, and the audio collection unit 60 is used when the first audio output unit 10 plays a certain segment of the first audio file , Picking up the second audio and the audio leaking from the first audio to the outside of the audio output device 100, and the processing unit 50 is configured to leak to the outside of the audio output device 100 according to the second audio and the first audio
  • the audio adjustment updates the parameter adjustment value
  • the second audio output unit 30 is synchronously controlled to play
  • the updated second audio is generated from the corresponding segment of the updated second audio file, and the updated second audio is used to eliminate audio leaking from the first audio to the outside of the audio output device.
  • the audio collection unit 60 may be, but is not limited to, an audio collection unit such as a microphone.
  • the audio output device 100 further includes an analog-to-digital conversion circuit 80, and the analog-to-digital conversion circuit 80 is provided between the processing unit 50 and the audio collection unit 60.
  • the analog-to-digital conversion circuit 80 is used to convert the collected audio from an analog signal to a digital signal suitable for processing by the processing unit 50.
  • the audio output device 100 further includes a digital filter 90, the digital filter 90 is disposed between the analog-to-digital conversion circuit 80 and the processing unit 50, and the digital The filter 90 is used for filtering the digital signal generated by the analog-to-digital conversion circuit 80 and transmitting the filtered digital signal to the processing unit 50 for processing.
  • the processing unit 50 controls the first audio output unit 10 to continue to play subsequent segments of the first audio file to generate the first audio
  • the processing unit 50 synchronously controls the second audio output unit 30 to play the updated corresponding segment of the second audio file to generate a second audio
  • the second audio is used for leaking the first audio to the outside of the device.
  • the audio is muted to avoid sound leakage, and in this process, the audio collection unit 60 continues to pick up the second audio and the audio leaked from the first audio to the outside of the audio output device 100, and adjust the parameters
  • the value is updated again, and so on, until the updated second audio can completely mute the audio leaking from the first audio to the outside of the device.
  • the present application can update the second audio according to the audio leaked from the first audio to the outside of the audio output device 100 in real time, so that the second audio can perform the audio leakage of the first audio to the outside of the audio output device 100 at all times. It has a good effect of eliminating sound and eliminating leakage.
  • the audio output device in the second embodiment of the present application is similar to the audio output device 100 in the first embodiment, except that, in the second embodiment, the audio collection unit 60 is used to pick up The residual audio of the first audio leaked to the outside of the audio output device 100 and not muted by the second audio, the processing unit 50 is configured to adjust the parameter adjustment value according to the residual audio, and according to the updated
  • the first audio file updates all segments after the segment corresponding to the first segment in the second audio file to generate an updated second audio file, and the first audio file is controlling the first audio output
  • the unit 10 plays a subsequent segment of the first audio file to generate the first audio
  • it synchronously controls the second audio output unit 30 to synchronously play the corresponding segment of the updated second audio file to generate the updated second audio.
  • the updated second audio is used to eliminate audio leaking from the first audio to the outside of the audio output device.
  • the processing unit 50 controls the first audio output unit 10 to continue to play subsequent segments of the first audio file to generate the first audio, while the processing unit 50 synchronously controls the first audio file
  • the second audio output unit 30 plays the updated corresponding segment of the second audio file to generate second audio, the second audio being used to mute the audio leaking from the first audio to the outside of the device, to avoid sound leakage, and,
  • the audio collection unit 60 continues to pick up the residual audio of the first audio that is leaked to the outside of the audio output device 100 and is not muted by the second audio, and the processing unit 50 is used according to the The residual audio updates the parameter adjustment value, and this is repeated until the updated second audio can mute the audio leaking from the first audio to the outside of the device within the error allowable range.
  • FIG. 2 is a schematic flowchart of the method for eliminating sound leakage in the first embodiment of this application.
  • the method for eliminating sound leakage is applied to the audio output device 100, and is used to implement less than elimination of the sound leakage of the audio output device 100.
  • the method for eliminating sound leakage includes:
  • Step 21 Control the first audio output unit 10 to play the first audio file to generate first audio, where the first audio is used for transmission to the user's ears for the user to listen to;
  • Step 22 Generate a second audio file based on the first audio file and the parameter adjustment value
  • Step 23 Synchronously control the second audio output unit 30 to play the second audio file to generate second audio, wherein the second audio output unit 30 is arranged opposite to the first audio output unit 10, so The second audio is used to eliminate audio leaking to the outside of the audio output device 100 during the transmission of the first audio to the user's ears.
  • generating the second audio file based on the first audio file and the parameter adjustment value includes:
  • a second audio file is generated according to the first audio file and the parameter adjustment value.
  • generating the second audio file based on the first audio file and the parameter adjustment value includes:
  • a second audio file is generated according to the first audio file and the parameter adjustment value.
  • the frequency spectrum curve is a curve with frequency as the horizontal axis and amplitude and phase as the vertical axis.
  • the first audio file may be divided into several audio segments, for example, according to the playback order, the first segment, the second segment, ..., the first segment N fragment.
  • the second audio file can also be divided into several audio segments, for example, according to the playback order, the first segment, the second segment, ..., the Nth segment are in sequence.
  • the audio segments of the first audio file correspond to the audio segments of the second audio file one-to-one, that is, the first segment of the first audio file corresponds to the first segment of the second audio file, and so on ,
  • the Nth segment of the first audio file corresponds to the Nth segment of the second audio file.
  • the first audio may include, but is not limited to, three parameters: period, phase, and amplitude.
  • the second audio frequency may include, but is not limited to, three parameters: period, phase, and amplitude.
  • the amplitude and period of the audio leaked to the outside of the audio output device during the transmission of the first audio to the user's ears are the same as the amplitude and period of the second audio;
  • the phase of the audio leaking to the outside of the audio output device during the transmission of the first audio to the user's ear is opposite to the phase of the second audio.
  • the parameter adjustment value includes one or more of an amplitude adjustment value and a phase adjustment value.
  • controlling the first audio output unit 10 to play the first audio file to generate the first audio includes:
  • the first audio output unit 10 is controlled to output the analog signal to generate the first audio.
  • controlling the second audio output unit 30 to play the second audio file to generate the second audio includes:
  • the second audio output unit 30 is controlled to output the analog signal to generate second audio.
  • the method for eliminating sound leakage further includes the steps:
  • the first audio output unit 10 plays a certain segment of the first audio file, picking up the second audio and the audio leaking from the first audio to the outside of the audio output device 100;
  • the second audio output unit 30 is controlled to update all segments after the segment corresponding to the first segment in the second audio file according to the updated parameter adjustment value and the first audio file to generate an updated second Audio files;
  • the updated second audio is used to eliminate audio leaking from the first audio to the outside of the audio output device.
  • the method for eliminating sound leakage further includes the steps:
  • the mutual cancellation means that the loudness of the residual audio after the second audio and the audio leaked to the outside of the audio output device 100 are mutually canceled between the second audio and the first audio is less than a preset threshold and can be ignored.
  • the method for eliminating sound leakage further includes the steps:
  • the parameter adjustment value is adjusted and updated according to the digital signal.
  • the method for eliminating sound leakage also includes the following steps:
  • the digital signal is filtered.
  • the present application can update the second audio according to the audio leaked from the first audio to the outside of the audio output device 100 in real time, so that the second audio can perform the audio leakage of the first audio to the outside of the audio output device 100 at all times. It has a good effect of eliminating sound and eliminating leakage.
  • the method for eliminating sound leakage in the second embodiment of the present application is similar to the method for eliminating sound leakage in the first embodiment, except that, in the second embodiment, the method for eliminating sound leakage also includes step:
  • the second audio output unit 30 When controlling the first audio output unit 10 to play a subsequent segment of the first audio file to generate the first audio, synchronously control the second audio output unit 30 to synchronously play the updated corresponding segment of the second audio file to generate an update
  • the second audio after the update, and the second audio after the update is used to eliminate audio leaking from the first audio to the outside of the audio output device.
  • the method for eliminating sound leakage further includes the steps:
  • the second audio file is adjusted and updated.
  • the embodiments of the present application also provide a computer storage medium, wherein the computer storage medium is used to store a computer program, and the computer program causes the computer to execute part or all of the steps of any of the above-mentioned method embodiments. .
  • the embodiments of the present application also provide a computer program product.
  • the computer program product includes a non-transitory computer-readable storage medium storing a computer program.
  • the computer program is operable to cause a computer to execute the method described in the foregoing method embodiment. Part or all of the steps of any leakage elimination method.
  • the disclosed device may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • processing unit 50 may be, but is not limited to, a central processing unit (Central Processing Unit, CPU), other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), and application specific integrated circuits (ASICs). ), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • ASICs application specific integrated circuits
  • FPGA Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or in the form of software program modules.
  • the integrated unit is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer readable memory.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory.
  • a number of instructions are included to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.
  • the program can be stored in a computer-readable memory, and the memory can include: a flash disk , Read-only memory (English: Read-Only Memory, abbreviation: ROM), random access device (English: Random Access Memory, abbreviation: RAM), magnetic disk or optical disk, etc.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

本申请提供一种音频输出设备及其漏音消除方法。所述音频输出设备包括处理单元、第一音频输出单元和第二音频输出单元。所述处理单元用于基于第一音频文件与参数调节值生成第二音频文件;所述处理单元用于控制所述第一音频输出单元播放第一音频文件而产生第一音频,并同步控制所述第二音频输出单元播放第二音频文件而产生第二音频,其中,所述第一音频用于传输至用户耳朵供用户聆听,所述第二音频用于消除所述第一音频在传输至用户耳朵的过程中漏至音频输出设备外部的音频。从而,避免漏音。

Description

音频输出设备及其漏音消除方法 技术领域
本申请涉及音频输出设备,特别涉及一种音频输出设备及其漏音消除方法。
背景技术
耳机和手机在通话时,不希望对方的声音泄漏出去被周围的人听到,听音乐或者看视频的时候,也不应该有漏音,以免影响到周围其他的人。现在的音频系统产品,包括耳机和手机等,在通话、听音乐或者看视频的时候,经常有漏音现象。比如骨传导耳机,头戴式耳机音量较大时,都会有漏音发生。全屏手机由于留给听筒的很小,听筒会偏朝上角度,导致漏音现象明显。目前还没有类似技术解决漏音问题。
发明内容
本申请的目的在于提供一种音频输出设备及其漏音消除方法,以解决上述技术问题。
为了解决上述技术问题,第一方面,本申请提供的一种音频输出设备,包括:处理单元、第一音频输出单元和第二音频输出单元;所述处理单元分别与所述第一音频输出单元和第二音频输出单元电性连接;所述处理单元用于基于第一音频文件与参数调节值生成第二音频文件;所述处理单元用于控制所述第一音频输出单元播放第一音频文件而产生第一音频,并同步控制所述第二音频输出单元播放第二音频文件而产生第二音频,其中,所述第一音频用于传输至用户耳朵供用户聆听,所述第二音频用于消除所述第一音频在传输至用户耳朵的过程中漏至音频输出设备外部的音频。
第二方面,本申请还提供一种漏音消除方法,应用于音频输出设备上,所述漏音消除方法包括步骤:
控制音频输出设备的第一音频输出单元播放第一音频文件而产生第一音频,所述第一音频用于传输至用户耳朵供用户聆听;
基于第一音频文件与参数调节值生成第二音频文件;
同步控制所述第二音频输出单元播放第二音频文件而产生第二音频,其中,所述第二音频用于消除所述第一音频在传输至用户耳朵的过程中漏至音频输出设备外部的音频。
本申请提供的音频输出设备及其漏音消除方法,采用第二音频输出单元发出的第二音频消除第一音频输出单元漏至音频输出设备外部的音频,从而消除漏音。
附图说明
为了更清楚地说明本申请实施例的技术方案,下面将对实施方式中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图是本申请一些实施方式,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本申请第一实施例中的音频输出设备的模块示意图。
图2为本申请第一实施例中的漏音消除方法的流程示意图。
具体实施方式
为了使本技术领域的人员更好地理解本申请方案,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别不同对象,而不是用于描述特定顺序。此外,术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元,而是可选地还包括没有列出的步骤或单元,或可选地还包括对于这些过程、方法、产品或设备固有的其他步骤或单元。
在本文中提及“实施例”意味着,结合实施例描述的特定特征、结构或特性可 以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例,也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是,本文所描述的实施例可以与其它实施例相结合。
本申请实施例所涉及到的音频输出设备可以包括音箱、耳机以及各种具有音频输出功能的手持设备、车载设备、可穿戴设备等等。为方便描述,上面提到的设备统称为音频输出设备。
请参阅图1,图1为本申请第一实施例中音频输出设备100的模块示意图。所述音频输出设备100包括第一音频输出单元10、第二音频输出单元30和处理单元50。所述处理单元50分别与所述第一音频输出单元10和所述第二音频输出单元30。所述处理单元50用于控制所述第一音频输出单元10播放第一音频文件而产生第一音频,所述处理单元50用于基于第一音频文件与参数调节值生成第二音频文件,并同步控制所述第二音频输出单元30播放所述第二音频文件而产生第二音频。所述第一音频用于传输至用户耳朵供用户聆听,所述第二音频用于消除所述第一音频在传输至用户耳朵的过程中漏至音频输出设备100外部的音频。
本申请提供的音频输出设备100及其漏音消除方法,采用第二音频消除第一音频漏至音频输出设备100外部的音频,消除漏音。
具体地,在其中一实施例中,所述第一音频输出单元10和所述第二音频输出单元30相背设置。可以理解的是,在其它实施例中,所述第一音频输出单元10与所述第二音频输出单元30还可以是其它的位置关系,在此不做限定。
具体地,在其中一实施例中,所述第一音频输出单元10和所述第二音频输出单元30可以是但不限于扬声器等发声单元。当使用时,所述第一音频输出单元10朝向用户的耳朵,用于将第一音频传输至用户耳朵供用户聆听;所述第二音频输出单元30背向用户的耳朵,用于产生第二音频而将第一音频在传输至用户耳朵的过程中漏至音频输出设备100外部的音频进行消音。从而,消除漏音。
进一步地,在其中一实施例中,所述处理单元50根据第一音频文件及其播放参数确定漏至音频输出设备100外部的音频,并根据所述第一音频和所述漏 至音频输出设备100外部的音频确定所述参数调节值,且根据所述第一音频文件和参数调节值生成第二音频文件。
进一步地,在其中一实施例中,所述处理单元50根据第一音频文件及其播放参数确定漏至音频输出设备100外部的音频的频谱曲线,并根据所述第一音频的频谱曲线以及漏至音频输出设备100外部的音频的频谱曲线确定所述参数调节值,且根据所述第一音频文件和参数调节值生成第二音频文件。其中,所述频谱曲线是以频率为横轴,振幅和相位为纵轴的曲线。
进一步地,在其中一实施例中,由于所述音频输出设备100不能完全贴合用户耳朵,所以,第一音频在传输至用户耳朵的过程中会有一部分第一音频漏至音频输出设备100的外部,而且,第一音频的响度越大,其漏至音频输出设备100外部的响度就越大,但漏至音频输出设备100外部的音频的响度总是小于第一音频的响度。从而,所述音频输出设备100预存一对应关系表,所述对应关系表包括第一音频文件及其播放参数与参数调节值之间的对应关系。可以理解的是,所述对应关系可以是根据历史记录中第一音频文件及其播放参数与参数调节值之间的对应关系而设置的;当然,所述对应关系还可以根据音频输出设备100的结构、材料等性能预估的采用所述播放参数播放所述第一音频文件时可能会露出的音频的参数而设置的。
可以理解的是,在其中一实施例中,所述第一音频文件可以是但不限于存储在所述音频输出设备100的存储单元70中。所述第一音频文件可以是外部设备发送至音频输出设备100并存储在其存储单元70的音频文件,或者存储在所述存储单元70本地的音频文件。
可以理解的是,在其中一实施例中,所述第一音频文件可以被分为若干音频片段,例如,依照播放次序,依次为第一片段、第二片段、......、第N片段。相应地,第二音频文件也可以被分为若干音频片段,例如,依照播放次序,依次为第一片段、第二片段、......、第N片段。所述第一音频文件的若干音频片段与所述第二音频文件的若干音频片段一一对应,即,第一音频文件的第一片段与所述第二音频文件的第一片段对应,如此类推,所述第一音频文件的第N片段与所述第二音频文件的第N片段对应。
可以理解的是,在其中一实施例中,所述第一音频可以包括但不限于周期、相位和振幅三个参数。所述第二音频可以包括但不限于周期、相位和振幅三个参数。
可以理解的是,在其中一实施例中,所述第一音频在传输至用户耳朵的过程中漏至音频输出设备外部的音频的振幅和周期与所述第二音频的振幅和周期相同;所述第一音频在传输至用户耳朵的过程中漏至音频输出设备外部的音频的相位与所述第二音频的相位相反。
可以理解的是,在其中一实施例中,所述参数调节值包括振幅调节值和相位调节值的一种或者多种。
进一步地,在其中一实施例中,所述音频输出设备100还包括第一数模转换电路20。所述第一数模转换电路20位于所述处理单元50和所述第一音频输出单元10之间。所述第一数模转换电路20用于对所述第一音频文件进行数模转换,以转换为适用于所述第一音频输出单元10的模拟信号。
进一步地,在其中一实施例中,所述音频输出设备100还包括第二数模转换电路40。所述第二数模转换电路40位于所述处理单元50和所述第二音频输出单元30之间。所述第二数模转换电路40用于将第二音频转换为适用于所述第二音频输出单元30的模拟信号。
进一步地,在其中一实施例中,所述音频输出设备100还包括音频采集单元60,所述音频采集单元60用于在所述第一音频输出单元10播放第一音频文件的某一片段时,拾取所述第二音频以及所述第一音频漏至音频输出设备100外部的音频,所述处理单元50用于根据所述第二音频以及所述第一音频漏至音频输出设备100外部的音频调整更新所述参数调节值,并控制第二音频输出单元30按照更新后的所述参数调节值以及第一音频文件更新所述第二音频文件中与所述第一片段相对应的片段之后的所有片段而生成更新后的第二音频文件,且在控制所述第一音频输出单元10播放第一音频文件的后续片段而产生第一音频时,同步控制所述第二音频输出单元30播放更新后的第二音频文件的对应片段而产生更新后的第二音频,所述更新后的第二音频用于消除所述第一音频漏至音频输出设备外部的音频。
进一步地,在其中一实施例中,所述音频采集单元60可以是但不限于麦克风等音频采集单元。
所述音频输出设备100还包括模数转换电路80,所述模数转换电路80设置在所述处理单元50和所述音频采集单元60之间。所述模数转换电路80用于将采集到的音频从模拟信号转换为适用于所述处理单元50进行处理的数字信号。
进一步地,在其中一实施例中,所述音频输出设备100还包括数字滤波器90,所述数字滤波器90设置于所述模数转换电路80和所述处理单元50之间,所述数字滤波器90用于对所述模数转换电路80产生的数字信号进行滤波,并将滤波后的数字信号传输至所述处理单元50进行处理。
进一步地,在其中一实施例中,当更新了第二音频文件之后,所述处理单元50控制所述第一音频输出单元10继续播放第一音频文件的后续片段而产生第一音频的同时,所述处理单元50同步控制所述第二音频输出单元30播放更新后的第二音频文件的对应片段而产生第二音频,所述第二音频用于对所述第一音频漏至设备外部的音频进行消音,避免漏音,并且,在此过程中,所述音频采集单元60继续拾取所述第二音频以及所述第一音频漏至音频输出设备100外部的音频,并对所述参数调节值进行再次更新,如此重复,直至更新后的第二音频能够完全对第一音频漏至设备外部的音频进行消音为止。
从而,本申请能够实时的根据第一音频漏至音频输出设备100外部的音频来更新第二音频,使得每时每刻第二音频都可以对第一音频漏至音频输出设备100外部的音频进行消音,消除漏音的效果好。
可以理解的是,本申请第二实施例中的音频输出设备与第一实施例中的音频输出设备100类似,不同之处在于,在第二实施例中,所述音频采集单元60用于拾取所述第一音频的漏至音频输出设备100外部的且未被所述第二音频消音的残余音频,所述处理单元50用于根据所述残余音频调整所述参数调节值,并根据更新后的参数调节值以及第一音频文件更新所述第二音频文件中与所述第一片段相对应的片段之后的所有片段而生成更新后的第二音频文件,且在控制所述第一音频输出单元10播放第一音频文件的后续片段而产生第一音频时,同步控制所述第二音频输出单元30同步播放更新后的第二音频文件的对应片段 而产生更新后的第二音频,所述更新后的第二音频用于消除所述第一音频漏至音频输出设备外部的音频。
当更新了第二音频文件之后,所述处理单元50控制所述第一音频输出单元10继续播放第一音频文件的后续片段而产生第一音频的同时,所述处理单元50同步控制所述第二音频输出单元30播放更新后的第二音频文件的对应片段而产生第二音频,所述第二音频用于对所述第一音频漏至设备外部的音频进行消音,避免漏音,并且,在此过程中,所述音频采集单元60继续拾取所述第一音频的漏至音频输出设备100外部的且未被所述第二音频消音的残余音频,所述处理单元50用于根据所述残余音频更新所述参数调节值,如此重复,直至更新后的第二音频能够在误差允许范围内对第一音频漏至设备外部的音频进行消音为止。
请参阅图2,图2为本申请第一实施例中漏音消除方法的流程示意图。所述漏音消除方法应用于音频输出设备100上,用于实现对所述音频输出设备100的漏音进行小于消除。所述漏音消除方法包括:
步骤21:控制第一音频输出单元10播放所述第一音频文件而产生第一音频,其中,所述第一音频用于传输至用户耳朵供用户聆听;
步骤22:基于第一音频文件与参数调节值生成第二音频文件;
步骤23:同步控制所述第二音频输出单元30播放所述第二音频文件而产生第二音频,其中,所述第二音频输出单元30与所述第一音频输出单元10相背设置,所述第二音频用于消除所述第一音频在传输至用户耳朵的过程中漏至音频输出设备100外部的音频。
进一步地,在其中一实施例中,基于第一音频文件与参数调节值生成第二音频文件,包括:
根据所述第一音频和所述漏至音频输出设备100外部的音频确定所述参数调节值;及
根据所述第一音频文件和参数调节值生成第二音频文件。
进一步地,在其中一实施例中,基于第一音频文件与参数调节值生成第二音频文件,包括:
根据所述第一音频的频谱曲线以及漏至音频输出设备100外部的音频的频谱曲线确定所述参数调节值;及,
根据所述第一音频文件和参数调节值生成第二音频文件。其中,所述频谱曲线是以频率为横轴,振幅和相位为纵轴的曲线。
可以理解的是,在其中一实施例中,所述第一音频文件可以被分为若干音频片段,例如,依照播放次序,依次为第一片段、第二片段、......、第N片段。相应地,第二音频文件也可以被分为若干音频片段,例如,依照播放次序,依次为第一片段、第二片段、......、第N片段。所述第一音频文件的若干音频片段与所述第二音频文件的若干音频片段一一对应,即,第一音频文件的第一片段与所述第二音频文件的第一片段对应,如此类推,所述第一音频文件的第N片段与所述第二音频文件的第N片段对应。
可以理解的是,在其中一实施例中,所述第一音频可以包括但不限于周期、相位和振幅三个参数。所述第二音频可以包括但不限于周期、相位和振幅三个参数。
可以理解的是,在其中一实施例中,所述第一音频在传输至用户耳朵的过程中漏至音频输出设备外部的音频的振幅和周期与所述第二音频的振幅和周期相同;所述第一音频在传输至用户耳朵的过程中漏至音频输出设备外部的音频的相位与所述第二音频的相位相反。
可以理解的是,在其中一实施例中,所述参数调节值包括振幅调节值和相位调节值的一种或者多种。
进一步地,在其中一实施例中,控制第一音频输出单元10播放所述第一音频文件而产生第一音频,包括:
对所述第一音频文件进行数模转换,以转换为适用于所述第一音频输出单元10的模拟信号;
控制所述第一音频输出单元10输出所述模拟信号而产生所述第一音频。
进一步地,在其中一实施例中,控制第二音频输出单元30播放所述第二音频文件而产生第二音频,包括:
将第二音频转换为适用于所述第二音频输出单元30的模拟信号;
控制所述第二音频输出单元30输出所述模拟信号而产生第二音频。
进一步地,在其中一实施例中,所述漏音消除方法还包括步骤:
在所述第一音频输出单元10播放第一音频文件的某一片段时,拾取所述第二音频以及所述第一音频漏至音频输出设备100外部的音频;
根据所述第二音频以及所述第一音频漏至音频输出设备100外部的音频调整更新所述参数调节值;
控制第二音频输出单元30按照更新后的所述参数调节值以及第一音频文件更新所述第二音频文件中与所述第一片段相对应的片段之后的所有片段而生成更新后的第二音频文件;及
在控制所述第一音频输出单元10播放第一音频文件的后续片段而产生第一音频时,同步控制所述第二音频输出单元30播放更新后的第二音频文件的对应片段而产生更新后的第二音频,所述更新后的第二音频用于消除所述第一音频漏至音频输出设备外部的音频。
进一步地,在其中一实施例中,所述漏音消除方法还包括步骤:
判断所述第二音频以及所述第一音频漏至音频输出设备100外部的音频是否可以互相消音;
如果两者之间可以互相消音,则无需调整并更新所述参数调节值;
如果两者之间不可以互相消音,则调整并更新所述参数调节值。
其中,所述互相消音是指所述第二音频与所述第一音频漏至音频输出设备100外部的音频互相消音之后残余音频的响度小于预设阈值,可以忽略不计。
进一步地,在其中一实施例中,所述漏音消除方法还包括步骤:
将采集到的音频从模拟信号转换为适用于所述处理单元50进行处理的数字信号;
根据所述数字信号调整并更新所述参数调节值。
进一步地,在其中一实施例中,将采集到的音频从模拟信号转换为适用于所述处理单元50进行处理的数字信号,与根据所述数字信号调整并更新所述参数调节值之间,所述漏音消除方法还包括步骤:
对所述数字信号进行滤波。
从而,本申请能够实时的根据第一音频漏至音频输出设备100外部的音频来更新第二音频,使得每时每刻第二音频都可以对第一音频漏至音频输出设备100外部的音频进行消音,消除漏音的效果好。
可以理解的是,本申请第二实施例中的漏音消除方法与第一实施例中的漏音消除方法类似,不同之处在于,在第二实施例中,所述漏音消除方法还包括步骤:
拾取所述第一音频的漏至音频输出设备100外部的且未被所述第二音频消音的残余音频;
根据所述残余音频调整所述参数调节值;
根据更新后的参数调节值以及第一音频文件更新所述第二音频文件中与所述第一片段相对应的片段之后的所有片段而生成更新后的第二音频文件;
在控制所述第一音频输出单元10播放第一音频文件的后续片段而产生第一音频时,同步控制所述第二音频输出单元30同步播放更新后的第二音频文件的对应片段而产生更新后的第二音频,所述更新后的第二音频用于消除所述第一音频漏至音频输出设备外部的音频。
进一步地,在其中一实施例中,所述漏音消除方法还包括步骤:
判断所述残余音频的响度是否大于预设阈值;
如果残余音频的响度小于预设阈值,则无需调整并更新所述第二音频文件;
如果残余音频的响度大于等于预设阈值,则调整并更新所述第二音频文件。
本申请实施例还提供一种计算机存储介质,其中,该计算机存储介质用于存储计算机程序,该计算机程序使得计算机执行如上述方法实施例中记载的任何一种漏音消除方法的部分或全部步骤。
本申请实施例还提供一种计算机程序产品,所述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质,所述计算机程序可操作来使计算机执行如上述方法实施例中记载的任何一种漏音消除方法的部分或全部步骤。
需要说明的是,对于前述的各方法实施例,为了简单描述,故将其都表述为一系列的动作组合,但是本领域技术人员应该知悉,本申请并不受所描述的 动作顺序的限制,因为依据本申请,某些步骤可以采用其他顺序或者同时进行。其次,本领域技术人员也应该知悉,说明书中所描述的实施例均属于优选实施例,所涉及的动作和模块并不一定是本申请所必须的。
在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详述的部分,可以参见其他实施例的相关描述。
在本申请所提供的几个实施例中,应该理解到,所揭露的装置,可通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,所述处理单元50可以是但不限于中央处理单元(Central Processing Unit,CPU),其它通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。
在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件程序模块的形式实现。
所述集成的单元如果以软件程序模块的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储器中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部 分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储器中,包括若干指令用以使得一台计算机设备(可为个人计算机、服务器或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储器包括:U盘、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成,该程序可以存储于一计算机可读存储器中,存储器可以包括:闪存盘、只读存储器(英文:Read-Only Memory,简称:ROM)、随机存取器(英文:Random Access Memory,简称:RAM)、磁盘或光盘等。
以上对本申请实施例进行了详细介绍,本文中应用了具体个例对本申请的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本申请的方法及其核心思想;同时,对于本领域的一般技术人员,依据本申请的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本申请的限制。

Claims (13)

  1. 一种音频输出设备,其特征在于,包括:处理单元、第一音频输出单元和第二音频输出单元;所述处理单元分别与所述第一音频输出单元和第二音频输出单元电性连接;所述处理单元用于基于第一音频文件与参数调节值生成第二音频文件;所述处理单元用于控制所述第一音频输出单元播放第一音频文件而产生第一音频,并同步控制所述第二音频输出单元播放第二音频文件而产生第二音频,其中,所述第一音频用于传输至用户耳朵供用户聆听,所述第二音频用于消除所述第一音频在传输至用户耳朵的过程中漏至音频输出设备外部的音频。
  2. 根据权利要求1所述的音频输出设备,其特征在于,所述第一音频输出单元和所述第二音频输出单元相背设置。
  3. 根据权利要求1所述的音频输出设备,其特征在于,所述处理单元用于根据第一音频文件及其播放参数确定会漏至所述音频输出设备外部的音频,并根据所述第一音频和所述漏至音频输出设备外部的音频确定参数调节值,且根据所述第一音频文件和参数调节值生成第二音频文件。
  4. 根据权利要求1至3任何一项所述的音频输出设备,其特征在于,所述第二音频文件跟随所述第一音频文件的变化而同步变化,且所述第二音频文件的相位与所述第一音频文件的对应位置的相位相反。
  5. 根据权利要求4所述的音频输出设备,其特征在于,所述音频输出设备还包括音频采集单元,所述音频采集单元用于在所述第一音频输出单元输出第一音频文件的第一片段时拾取所述第二音频以及所述第一音频漏至音频输出设备外部的音频,所述处理单元用于根据所述第二音频以及所述第一音频漏至音频输出设备外部的音频调整更新所述参数调节值,并根据更新后的参数调节值以及第一音频文件更新所述第二音频文件中与所述第一片段相对应的片段之后的所有片段而生成更新后的第二音频文件,且在控制所述第一音频输出单元播放第一音频文件的所述第一片段之后的第二片段及后续片段而产生第一音频时,同步控制所述第二音频输出单元播放更新后的第二音频文件而产生更新后的第二音频,所述更新后的第二音频用于消除所述第一音频漏至音频输出设备外部 的音频。
  6. 根据权利要求4所述的音频输出设备,其特征在于,所述音频输出设备还包括音频采集单元,所述音频采集单元用于在所述第一音频输出单元输出第一音频文件的第一片段时拾取所述第一音频的漏至音频输出设备外部的且未被所述第二音频消音的残余音频,所述处理单元用于根据所述残余音频调整所述参数调节值,并根据更新后的参数调节值以及第一音频文件更新所述第二音频文件中与所述第一片段相对应的片段之后的所有片段而生成更新后的第二音频文件,且在控制所述第一音频输出单元播放第一音频文件的所述第一片段之后的第二片段及后续片段而产生第一音频时,同步控制所述第二音频输出单元播放更新后的第二音频文件而产生更新后的第二音频,所述更新后的第二音频用于消除所述第一音频漏至音频输出设备外部的音频。
  7. 一种漏音消除方法,应用于音频输出设备上,其特征在于,所述漏音消除方法包括步骤:
    控制音频输出设备的第一音频输出单元播放第一音频文件而产生第一音频,所述第一音频用于传输至用户耳朵供用户聆听;
    基于第一音频文件与参数调节值生成第二音频文件;
    同步控制所述第二音频输出单元播放第二音频文件而产生第二音频,其中,所述第二音频用于消除所述第一音频在传输至用户耳朵的过程中漏至音频输出设备外部的音频。
  8. 根据权利要求7所述的漏音消除方法,其特征在于,基于第一音频文件与参数调节值生成第二音频文件,包括:
    根据第一音频文件及其播放参数确定会漏至所述音频输出设备外部的音频;
    根据所述第一音频和所述漏至音频输出设备外部的音频确定参数调节值;及
    根据所述第一音频文件和参数调节值生成第二音频文件。
  9. 根据权利要求7或8所述的漏音消除方法,其特征在于,所述第二音频文件跟随所述第一音频文件的变化而同步变化,且所述第二音频文件的相位与所述第一音频文件的对应位置的相位相反。
  10. 根据权利要求9所述的漏音消除方法,其特征在于,所述方法包括步骤:
    在所述第一音频输出单元输出第一音频文件的第一片段时拾取所述第二音频以及所述第一音频漏至音频输出设备外部的音频;
    根据所述第二音频以及所述第一音频漏至音频输出设备外部的音频调整更新所述参数调节值;
    根据更新后的参数调节值以及第一音频文件而控制生成更新所述第二音频文件中与所述第一片段相对应的片段之后的所有片段而生成更新后的第二音频文件;及
    在控制所述第一音频输出单元播放第一音频文件的所述第一片段之后的第二片段及后续片段而产生第一音频时,同步控制所述第二音频输出单元播放更新后的第二音频文件而产生更新后的第二音频,所述更新后的第二音频用于消除所述第一音频漏至音频输出设备外部的音频。
  11. 根据权利要求10所述的漏音消除方法,其特征在于拾取所述第二音频以及所述第一音频漏至音频输出设备外部的音频之后,所述方法包括步骤:
    判断所述第二音频以及所述第一音频漏至音频输出设备外部的音频是否可以互相消音;
    如果两者之间可以互相消音,则无需调整并更新所述参数调节值;
    如果两者之间不可以互相消音,则调整并更新所述参数调节值。
  12. 根据权利要求9所述的漏音消除方法,其特征在于,所述方法还包括步骤:
    在所述第一音频输出单元输出第一音频文件的第一片段时拾取所述第一音频的漏至音频输出设备外部的且未被所述第二音频消音的残余音频;
    根据所述残余音频调整所述参数调节值;
    根据更新后的参数调节值以及第一音频文件而更新所述第二音频文件中与所述第一片段相对应的片段之后的所有片段而生成更新后的第二音频文件;及 在控制所述第一音频输出单元播放第一音频文件的所述第一片段之后的第二片段及后续片段而产生第一音频时,同步控制所述第二音频输出单元播放更新后的第二音频文件而产生更新后的第二音频,所述更新后的第二音频用于消除所述第一音频漏至音频输出设备外部的音频。
  13. 根据权利要求12所述的漏音消除方法,其特征在于,所述方法还包括步骤:
    判断所述残余音频的响度是否大于预设阈值;
    如果残余音频的响度小于预设阈值,则无需调整并更新所述参数调节值;
    如果残余音频的响度大于等于预设阈值,则调整并更新所述参数调节值。
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