WO2012022220A1 - Casques d'écoute à réduction de bruit et procédé de réduction de bruit et de distorsion de casque d'écoute - Google Patents

Casques d'écoute à réduction de bruit et procédé de réduction de bruit et de distorsion de casque d'écoute Download PDF

Info

Publication number
WO2012022220A1
WO2012022220A1 PCT/CN2011/077816 CN2011077816W WO2012022220A1 WO 2012022220 A1 WO2012022220 A1 WO 2012022220A1 CN 2011077816 W CN2011077816 W CN 2011077816W WO 2012022220 A1 WO2012022220 A1 WO 2012022220A1
Authority
WO
WIPO (PCT)
Prior art keywords
noise
audio playback
playback device
audio
noise canceling
Prior art date
Application number
PCT/CN2011/077816
Other languages
English (en)
Chinese (zh)
Inventor
黎晓
Original Assignee
Li Xiao
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Li Xiao filed Critical Li Xiao
Publication of WO2012022220A1 publication Critical patent/WO2012022220A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2410/00—Microphones
    • H04R2410/05—Noise reduction with a separate noise microphone

Definitions

  • the present invention relates to earphones, and more particularly to a noise canceling earphone and a method of reducing headphone noise and distortion.
  • Portable music players are often used on streets with high noise levels or in vehicles such as buses. Together with the music reproduced by the player, external noise can also be heard through the headphones, if you listen to music in the noise, sometimes music It is overwhelmed by noise, so users need to increase the volume to listen to music. Too much volume will cause hearing loss, and the sound leaks from the earphone to the outside, sometimes making people around them feel uncomfortable. Further, even if a high-quality musical tone is reproduced using an earphone, noise entering from the outside may be disturbed, so that the quality of the reproduced sound that the user can hear is degraded.
  • noise-cancelling headphones that can only hear music in the user's ear are popularized by eliminating noise entering from the outside.
  • the earphone In order to eliminate noise in the prior art, the earphone must emit a sound wave having the same amplitude but opposite polarity as the ambient sound appearing at the wearer's ear, the ambient sound wave and the sound wave combination from the earphone, and the two waves cancel each other.
  • the current noise canceling headphone uses an electrical summing circuit to mix the input source signal with the noise signal generated by the noise canceling circuit and inverting the ambient noise.
  • the source signal is passed through an adder and amplifier and then output to the speaker. Both the adder and the amplifier produce noise and distortion.
  • the source signal is passed through an adder and then output to the speaker.
  • the impedance of the adder will reduce the signal source's ability to control the speaker, ie reduce the damping factor of the signal source, which will reduce the sound quality while inverting the noise.
  • the signal is also applied to the adder, which is shunted into the source by the adder, creating interference to the source, which also degrades the sound quality.
  • the present invention provides a noise canceling headphone with high fidelity and reduced distortion and a method of reducing headphone noise and distortion.
  • the present invention provides a noise canceling earphone comprising a first audio playing device connected to a source signal device, a noise canceling system, and a second audio playing device, wherein the second audio playing device is connected to the noise canceling system and plays An anti-noise signal, the first audio playback device and the second audio playback device cooperate to form an acoustic adder.
  • the noise cancellation system includes a microphone and a noise cancellation circuit, and the input end of the noise cancellation circuit is connected to the microphone, and the noise cancellation circuit inputs The outlet is connected to the second audio playback device.
  • the first audio playback device is a first speaker
  • the second audio playback device is a second speaker
  • the first audio playback device is a first audio device installed in the speaker device
  • the second audio playback device is a second audio device installed in the speaker device
  • the noise canceling headphone further includes switching means for controlling an operating state of the first audio playing device and the second audio playing device.
  • the invention also provides a method for reducing headphone noise and distortion, the first audio playback device receives the source signal and plays the same; the noise cancellation system generates an anti-noise signal, and the second audio playback device receives the anti-noise signal and plays the same; The source signal played by the first audio playback device and the anti-noise signal played by the second audio playback device and ambient noise form an acoustic adder.
  • the noise canceling system includes a microphone and a noise canceling circuit, the microphone receiving ambient noise, and the noise canceling circuit generating an anti-noise signal having an opposite phase to the ambient noise amplitude.
  • the earphone has three working states, namely, only the first audio playback device working state, only the second audio playback device working state, the first audio playback device and the second audio playback device simultaneously working state; The user switches between the three working states as needed.
  • the beneficial effects of the present invention are: playing the source signal through the first audio playback device, and the second audio playback device plays an anti-noise signal generated by the noise cancellation system and having an opposite phase to the ambient noise amplitude, so that the source signal, the ambient noise and the anti-noise signal Mixing in the earphones or the human ear canal to form an acoustic adder to counteract the ambient noise, so that the human body only hears the input source signal; and because the noise cancellation system is completely independent of the input source signal on the circuit, It does not increase the distortion and noise of the input source signal.
  • FIG. 1 is a circuit diagram of an embodiment of a conventional earphone
  • FIG. 2 is a circuit diagram of another embodiment of a conventional earphone
  • FIG. 3 is a schematic block diagram of a noise canceling earphone of the present invention.
  • FIG. 4 is a circuit diagram of an embodiment of a noise canceling earphone of the present invention.
  • a noise canceling earphone including a first connected to the source signal device 5.
  • the noise cancellation system 3 may include a microphone 31, a noise cancellation circuit 32, an input end of the noise cancellation circuit 32 connected to the microphone 31, and an output end of the noise cancellation circuit 32 and the second audio.
  • the playback device 2 is connected.
  • the first audio playback device 1 is a first speaker 11, and the second audio playback device 2 is a second speaker 12.
  • the first speaker 11 and the second speaker 12 can be mounted on the earphone housing.
  • Within 6 and a microphone 31 can also be mounted within the earphone housing 6.
  • the first audio playback device 1 is a first voice coil installed in the speaker device
  • the second audio playback device 2 is a second microphone installed in the speaker device
  • the microphone 4 can also be mounted in the earphone housing 6.
  • the noise canceling headphone further includes switching means for controlling the operating states of the first audio playback device 1 and the second audio playback device 2.
  • the switching device can turn off the second audio playback device 2, using only the first audio playback device 1.
  • the switch device can turn off the first audio playback device 1 and use only the second audio playback device 2.
  • the first audio playback device 1 and the second audio playback device 2 are simultaneously played only when the user is in a noisy environment, both listening to music and reducing ambient noise.
  • the source signal, the ambient noise, and the anti-noise signal may be mixed and added in the noise canceling earphone or may be in the human ear canal to form an acoustic adder; when the first audio playback device 1 and the second audio playback device 2 are installed At the edge of the earphone casing 6, the sound waves emitted by the first audio playback device 1 and the second audio playback device 2 are directly emitted outside the earphone casing 6, so that the source signal and the anti-noise signal cannot be mixed and added in the earphone casing 6, only
  • the acoustic adder is formed by mixing and adding outside the noise canceling earphone, that is, in the human ear canal.
  • the invention also discloses a method for reducing headphone noise, the first audio playback device 1 receives the source signal and plays the same; the noise cancellation system 3 generates an anti-noise signal, and the second audio playback device 2 receives the anti-noise signal and plays the same
  • the source signal played by the first audio playback device 1 and the anti-noise signal played by the second audio playback device 2 and ambient noise form an acoustic adder.
  • the noise canceling system includes a microphone 31 that receives ambient noise, and a noise canceling circuit 32 that generates an anti-noise signal having an opposite phase to the ambient noise amplitude.
  • the headset has three working states, respectively, only the first audio playback device The working state, only the second audio playing device working state, the first audio playing device and the second audio playing device work simultaneously; the user switches between the three working states as needed.
  • the method for reducing headphone noise of the present invention plays a source signal through a first audio playback device, and the second audio playback device plays an anti-noise signal generated by the noise cancellation system and having an opposite phase to the ambient noise amplitude, so that the source signal, the ambient noise, and the anti-noise signal are
  • the noise-reducing earphones or the human ear canal are mixed and added to form an acoustic adder, thereby offsetting the environmental noise, so that the human body only hears the input source signal, and the sound quality of the source signal is ensured.
  • the source signal can be music or any audio signal.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Headphones And Earphones (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

La présente invention porte sur un casque d'écoute à réduction de bruit et sur un procédé de réduction de bruit et de distorsion de casque d'écoute. Lorsqu'un premier dispositif de lecture audio lit un signal source, un second dispositif de lecture audio lit des signaux antibruit ayant la même amplitude que le bruit ambiant généré par le système de réduction de bruit mais ayant une phase opposée à celui-ci, grâce à quoi le signal source, le bruit ambiant et le signal antibruit se mélangent et s'ajoutent les uns aux autres dans le casque d'écoute ou le conduit auditif humain pour former un additionneur acoustique, permettant ainsi de compenser le bruit ambiant, permettant au corps humain d'entendre seulement le signal source d'entrée ; en outre, le système de réduction de bruit est complètement indépendant des signaux de source d'entrée dans le circuit, par conséquent, la distorsion et le bruit du signal source ne seront pas accrus.
PCT/CN2011/077816 2010-08-20 2011-07-29 Casques d'écoute à réduction de bruit et procédé de réduction de bruit et de distorsion de casque d'écoute WO2012022220A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 201010259266 CN101924967A (zh) 2010-08-20 2010-08-20 降噪耳机及降低耳机噪音和失真的方法
CN201010259266.X 2010-08-20

Publications (1)

Publication Number Publication Date
WO2012022220A1 true WO2012022220A1 (fr) 2012-02-23

Family

ID=43339557

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/077816 WO2012022220A1 (fr) 2010-08-20 2011-07-29 Casques d'écoute à réduction de bruit et procédé de réduction de bruit et de distorsion de casque d'écoute

Country Status (2)

Country Link
CN (1) CN101924967A (fr)
WO (1) WO2012022220A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015121333A1 (de) * 2015-12-08 2017-06-08 Sennheiser Electronic Gmbh & Co. Kg Elektroakustische Schallwandlereinheit und Hörer

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201616843U (zh) * 2010-03-18 2010-10-27 华为终端有限公司 能够降低噪音的音频装置和降噪手机
CN101924967A (zh) * 2010-08-20 2010-12-22 黎晓 降噪耳机及降低耳机噪音和失真的方法
CN104036782A (zh) * 2013-03-06 2014-09-10 联想(北京)有限公司 一种降噪方法以及一种手持移动终端
CN104244139A (zh) * 2013-06-07 2014-12-24 深圳富泰宏精密工业有限公司 受话器控制电路及便携式电子装置
TWI563856B (en) * 2014-02-27 2016-12-21 Merry Electronics Co Ltd Mobile device and corresponding noise-canceling earphone
CN105635872A (zh) * 2014-10-29 2016-06-01 东莞宇龙通信科技有限公司 一种播放信息的方法、装置及耳机
CN107517423A (zh) * 2017-10-23 2017-12-26 南昌科卓科技有限公司 一种高灵敏的蓝牙耳机
CN107734418A (zh) * 2017-10-23 2018-02-23 吉安市立讯射频科技股份有限公司 一种便携式蓝牙立体声耳机
WO2019084886A1 (fr) * 2017-11-03 2019-05-09 深圳传音通讯有限公司 Procédé et dispositif de débruitage audio, terminal mobile et support d'informations lisible
CN108156551A (zh) * 2018-02-09 2018-06-12 会听声学科技（北京）有限公司 主动降噪系统、主动降噪耳机及主动降噪方法
CN108513100B (zh) * 2018-04-13 2019-04-09 张洋 基于信号分析的自动消音系统
CN110031088B (zh) * 2019-04-17 2020-04-07 珠海格力电器股份有限公司 电子设备故障检测方法、装置、设备和吸油烟机
CN110708629A (zh) * 2019-10-28 2020-01-17 深圳稳泰电声有限公司 蓝牙耳机
CN112618952A (zh) * 2020-12-10 2021-04-09 刘�东 一种耳穴治疗仪
CN114038488B (zh) * 2021-11-02 2023-07-18 维沃移动通信有限公司 多媒体信息的获取及播放的方法和装置、电子设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2588714Y (zh) * 2002-05-31 2003-11-26 黄大伟 一种消噪耳机
CN201207642Y (zh) * 2008-04-23 2009-03-11 符诗华 无线降噪耳机
CN101583059A (zh) * 2008-05-15 2009-11-18 欧力天工股份有限公司 头戴式消噪耳机
CN101924967A (zh) * 2010-08-20 2010-12-22 黎晓 降噪耳机及降低耳机噪音和失真的方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1050962C (zh) * 1993-09-29 2000-03-29 黄大伟 抗噪耳机
CN101765041B (zh) * 2009-06-09 2015-08-05 北京中星微电子有限公司 音频播放设备及降低音频播放时环境噪声的方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2588714Y (zh) * 2002-05-31 2003-11-26 黄大伟 一种消噪耳机
CN201207642Y (zh) * 2008-04-23 2009-03-11 符诗华 无线降噪耳机
CN101583059A (zh) * 2008-05-15 2009-11-18 欧力天工股份有限公司 头戴式消噪耳机
CN101924967A (zh) * 2010-08-20 2010-12-22 黎晓 降噪耳机及降低耳机噪音和失真的方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015121333A1 (de) * 2015-12-08 2017-06-08 Sennheiser Electronic Gmbh & Co. Kg Elektroakustische Schallwandlereinheit und Hörer

Also Published As

Publication number Publication date
CN101924967A (zh) 2010-12-22

Similar Documents

Publication Publication Date Title
WO2012022220A1 (fr) Casques d'écoute à réduction de bruit et procédé de réduction de bruit et de distorsion de casque d'écoute
JP4697553B2 (ja) ハンズフリー通話機能付き音響再生装置
JP6302541B2 (ja) 適応雑音消去システムの係数の動的バイアスを含む適応雑音消去のためのシステム及び方法
US20170345406A1 (en) Method, system and item
JP5639160B2 (ja) イヤホン配置及びその動作方法
US7889872B2 (en) Device and method for integrating sound effect processing and active noise control
EP3410431A1 (fr) Système d'annulation de bruit adaptatif (anc) multi-haut-parleur à faible latence pour un dispositif audio personnel
US9111523B2 (en) Device for and a method of processing a signal
JPWO2009047968A1 (ja) ノイズキャンセルヘッドホン
JP2009530950A (ja) ウェアラブル装置のためのデータ処理
JP2013029834A (ja) ノイズ除去音声再生
JP2006217321A (ja) ヘッドセット、および通信システム
US10643597B2 (en) Method and device for generating and providing an audio signal for enhancing a hearing impression at live events
US20230058427A1 (en) Wireless headset with hearable functions
JP2009020143A (ja) ノイズキャンセルヘッドホン
WO2021145152A1 (fr) Haut-parleur
JPH11196488A (ja) 再生装置および方法
JP2006324917A (ja) ノイズキャンセルヘッドフォン
JP2601418Y2 (ja) 電子式消音装置及び電子式消音装置付き音声再生装置
CN110896514A (zh) 一种降噪耳机
JP6668865B2 (ja) 耳装着音響再生装置
KR20080029420A (ko) 전자기기의 소음이 제거된 신호 출력 방법 및 이를 채용한전자기기
US20070297617A1 (en) Neighbor friendly headset: featuring technology to reduce sound produced by people speaking in their phones
JPH03207198A (ja) イヤホン等を用いる音響機器用騒音対策装置
JPH05145985A (ja) 携帯ステレオ装置

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: 11817747

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11817747

Country of ref document: EP

Kind code of ref document: A1