JP2017022766A - インナーイヤー式雑音低減イヤホン - Google Patents
インナーイヤー式雑音低減イヤホン Download PDFInfo
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- JP2017022766A JP2017022766A JP2016187934A JP2016187934A JP2017022766A JP 2017022766 A JP2017022766 A JP 2017022766A JP 2016187934 A JP2016187934 A JP 2016187934A JP 2016187934 A JP2016187934 A JP 2016187934A JP 2017022766 A JP2017022766 A JP 2017022766A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1787—General system configurations
- G10K11/17879—General system configurations using both a reference signal and an error signal
- G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
- G10K11/17813—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
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
- G10K11/1785—Methods, e.g. algorithms; Devices
- G10K11/17853—Methods, e.g. algorithms; Devices of the filter
- G10K11/17854—Methods, e.g. algorithms; Devices of the filter the filter being an adaptive 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
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- 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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Headphones And Earphones (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
【解決手段】能動雑音低減イヤホン。イヤホンは、ヘッドバンドなくユーザの耳内にイヤホンを位置付けて保持するための構造体と、音響駆動器を有する能動雑音減回路と、を有し、能動雑音減回路が、公称直径が10mmより大きく、音響駆動器の軸に平行でありまたは一致してノズルの中心線と交差する線がノズルの中心線と角度θ>±30°で交差する。マイクロホンは、音響駆動器の縁部に隣接して位置付けられる。イヤホンは、イヤホンが所定位置にあるときに、音響駆動器の一部がユーザの甲介内にあり、音響駆動器の他の部分がユーザの甲介の外側にあるように、構成されている。ノズルを環境に連結する開口部は、開口部内にあるインピーダンス提供構造体を有する。
【選択図】図7B
Description
Claims (23)
- 能動雑音低減(ANR)イヤホンであって、
前方キャビティ内に音響エネルギーを送達させるように構成された音響駆動器であって、前記前方キャビティが、当該イヤホンの内側にあり、当該音響駆動器が音響エネルギーを送達させる第1空間と、ユーザの外耳道の内側にある第2空間と、前記第1及び第2空間を連結するノズルセクションと、を有する、音響駆動器と、
当該イヤホンをユーザの耳に連結するためのチップであって、前記前方キャビティの前記第1空間を前記前方キャビティの前記第2空間に連結する前記ノズルセクションの少なくとも一部を有する、チップと、
能動雑音低減回路と、
を備え、
前記能動雑音低減回路が、
前記前方キャビティ内の雑音を検出するために、前記前方キャビティの前記第1空間に音響的に連結されたフィードバックマイクロホンと、
フィードバック雑音除去音声信号を前記前方キャビティ内に供給するために、前記フィードバックマイクロホンに応答するフィードバック回路と、
筐体の外側にある環境空間に音響的に連結されたフィードフォワードマイクロホンと、
フィードフォワード雑音除去音声信号を前記前方キャビティに供給するために、前記フィードフォワードマイクロホンに応答するフィードフォワード回路と、
を備え、
前記音響駆動器が、前記フィードバック雑音除去音声信号及び前記フィードフォワード雑音除去音声信号を備える出力雑音除去音声信号を音響エネルギーに変換するように構成され、
前記ノズルセクションが、当該ノズルセクションの音響インピーダンスを制御するように方向付けられかつ形付けられており、それにより、前記ノズルセクションの横断面積、前記ノズルセクションの横断面積に対する前記ノズルセクションの長さの比、前記ノズルセクションの音響質量のうちの少なくとも1つが、前記ノズルセクションのインピーダンスを前記能動雑音低減回路の動作範囲にわたって変化する閾値未満とさせることを特徴とする能動雑音低減イヤホン。 - 前記ノズルセクションが、硬質材料で形成されていることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記ノズルセクションが、ユーザの外耳道の開口部内に少なくとも部分的に進入するように構成されていることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記チップが、少なくとも部分的に、弾性材料で形成されており、
前記ノズルセクションのうちユーザの外耳道の開口部内に進入する少なくとも一部を覆うことを特徴とする請求項3に記載の能動雑音低減イヤホン。 - 前記ノズルセクションが、硬質部分と、弾性部分と、を備えることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記ノズルセクションが、外耳道と甲介のボウル部との間の移行部の領域に係合し、外耳道を前記ノズルセクションに連結させるための円錐台状の構造体を備えることを特徴とする請求項5に記載の能動雑音低減イヤホン。
- 前記チップが、外耳道と甲介のボウル部との間の移行部の領域の近傍に封止を形成するように構成されていることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記チップが、外耳道と甲介のボウル部との間の移行部の領域を音響的に封止するために、弾性材料で形成された円錐台状の部分を有することを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記チップが、外耳道の入口近傍で終端するように構成されており、それにより、前記チップが、外耳道内にほぼ進入していないことを特徴とする請求項7に記載の能動雑音低減イヤホン。
- 前記チップが、前記筐体から取外し可能であることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記チップが、外耳道と甲介のボウル部との間の移行部の領域を音響的に封止するために、弾性材料で形成された円錐台状の部分を有し、寸法が異なる円錐台状の部分を有する耳チップと交換可能であることを特徴とする請求項10に記載の能動雑音低減イヤホン。
- 前記チップが、ユーザの耳内に当該能動雑音低減イヤホンを位置付けかつ保持するために、外耳に係合する脚部を有し、寸法が異なる保持脚部を有するチップと交換可能であることを特徴とする請求項10に記載の能動雑音低減イヤホン。
- 前記音響駆動器が、当該音響駆動器の軸が前記ノズルセクションの中心線と角度θ>±30°で交差するように方向付けられていることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記ノズルセクションの質量インピーダンスの絶対値が、1kHzにおいて8.0x106[kg/(m4×sec)]以下であることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記ノズルセクションの質量インピーダンスの絶対値が、100Hzにおいて800x103[kg/(m4×sec)]以下であることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記ノズルセクションが、1200[kg/m4]以下の音響質量Mを有し、
ここで、M=ρl/Aであり、Aが前記ノズルセクションの開口横断面積であり、lが前記ノズルセクションの長さであることを特徴とする請求項1に記載の能動雑音低減イヤホン。 - 耳内で当該能動雑音低減イヤホンを位置付けかつ保持するために外耳に係合する構造体をさらに備えることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記音響駆動器が、10mmより大きい公称直径を有することを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記音響駆動器が、14mmより大きい公称直径を有することを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 当該能動雑音低減イヤホンが、当該能動雑音低減イヤホンが所定位置にあると、前記音響駆動器の一部がユーザの甲介内にあり、前記音響駆動器の別の一部がユーザの甲介の外側にあるように、構成されていることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記フィードバックマイクロホンが、前記音響駆動器の薄膜を当該音響駆動器のボイスコイルに取り付ける点と前記薄膜の縁部との中間に径方向で位置付けられていることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記フィードバックマイクロホンが、前記音響駆動器を支持するモジュールと前記ノズルセクションとの交差部に位置付けられていることを特徴とする請求項1に記載の能動雑音低減イヤホン。
- 前記前方キャビティが、前記音響駆動器の第1音放出面に連結されており、
当該能動雑音低減イヤホンが、
前記音響駆動器の第2音放出面に連結され、囲まれた音響空間を画成する後方キャビティであって、前記囲まれた音響空間を当該能動雑音低減イヤホンの環境空間に連結するポートを有する、後方キャビティをさらに備えることを特徴とする請求項1に記載の能動雑音低減イヤホン。
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US13/480,766 | 2012-05-25 | ||
US13/480,766 US9082388B2 (en) | 2012-05-25 | 2012-05-25 | In-ear active noise reduction earphone |
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JP2016187934A Active JP6215428B2 (ja) | 2012-05-25 | 2016-09-27 | インナーイヤー式雑音低減イヤホン |
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EP (2) | EP2856771B1 (ja) |
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CN (2) | CN107864418B (ja) |
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CN104429097B (zh) | 2017-10-31 |
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HK1207232A1 (en) | 2016-01-22 |
JP2015521008A (ja) | 2015-07-23 |
JP6215428B2 (ja) | 2017-10-18 |
US10206033B2 (en) | 2019-02-12 |
CN104429097A (zh) | 2015-03-18 |
US8682001B2 (en) | 2014-03-25 |
US9082388B2 (en) | 2015-07-14 |
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