JP2015521008A - インナーイヤー式雑音低減イヤホン - Google Patents
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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
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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
-
- 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
- G10K11/1785—Methods, e.g. algorithms; Devices
-
- 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
-
- 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
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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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
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- Physics & Mathematics (AREA)
- 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
Description
Claims (27)
- 装置であって、
能動雑音低減(ANR)イヤホンのためのイヤホンであって、
− 当該イヤホンをユーザの耳内で位置付けて保持するように外耳に係合するための構造体と、
− ユーザの外耳道で当該イヤホンを封止するための構造体と、
− 能動雑音低減回路であって、
・ 当該イヤホン内の雑音を検出するために、外耳道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、
・ フィードバック雑音除去音声信号を備える出力雑音除去音声信号を雑音除去音響エネルギーに変換する音響駆動器と、
を備える能動雑音低減回路と、
を備えるイヤホンを備え、
当該装置が、前記音響駆動器とユーザの外耳道とを音響的に連結する経路をさらに備え、
前記経路が、少なくとも10mm2の開口横断面積を有することを特徴とする装置。 - ノズルが、1000[m/m2]以下の比率l/Aを有し、
ここで、Aが、前記経路の開口横断面積であり、lが、前記経路の長さであり、
前記経路が、甲介のボウル部と外耳道への入口との間の移行部において外耳道で音響的に封止し、キャビティを形成することを特徴とする請求項1に記載の装置。 - 前記音響駆動器が、当該音響駆動器の軸と平行でありまたは一致して前記経路の中心線と交差する線が、前記経路の中心線と角度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に記載の装置。
- 前記経路の質量インピーダンスの絶対値|z|が、1kHzにおいて8.0×106以下であることを特徴とする請求項1に記載の装置。
- 前記経路の質量インピーダンスの絶対値|z|が、100Hzにおいて、800×103[kg/(m4×sec)]以下であることを特徴とする請求項1に記載の装置。
- 前記経路が、1200[kg/m4]以下の音響質量Mを有し、
ここで、M=ρl/Aであり、ρが空気の密度であり、Aが当該経路の開口横断面積であり、lが前記経路の長さであることを特徴とする請求項1に記載の装置。 - 装置であって、
能動雑音低減(ANR)イヤホンであって、
− ANR回路であって、
雑音を検出するためにユーザの外耳道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、
フィードバック雑音低減音声信号を備える出力雑音除去音声信号を変換する音響駆動器と、
を備える、ANR回路、
を備え、
経路が、前記音響駆動器とユーザの外耳道とを音響的に連結する、能動雑音低減イヤホンを備え、
前記音響駆動器が、当該音響駆動器の軸と平行でありまたは一致して経路の中心線と交差する線が前記経路の中心線と角度θ>±30°で交差し、
前記マイクロホンが、音響駆動器薄膜へのボイスコイルの取付点と前記音響駆動器薄膜の縁部との間に径方向に位置付けられており、
前記経路が、1000[m/m2]以下の比率l/Aを有し、
ここで、Aが、前記経路の開口横断面積であり、lが、前記経路の長さであり、
前記経路が、甲介のボウル部と外耳道への入口との間の移行部において外耳道で音響的に封止してキャビティを形成し、
前記経路の音響質量が、1200[kg/m4]以下であり、
ここで、M=ρl/Aであり、ρが空気の密度であり、Aが当該経路の開口横断面積であり、lが前記経路の長さであり、
前記経路の質量インピーダンスの絶対値|z|が、100Hzにおいて、800×103[kg/(m4×sec)]以下、1kHzにおいて8.0×106[kg/(m4×sec)]以下であり、
ここで、|z|=Mfであり、M=ρl/Aであり、ρが空気の密度であり、Aが当該経路の開口横断面積であり、lが前記経路の長さであることを特徴とする装置。 - 前記イヤホンを耳内で位置付けて保持するために外耳に係合させる構造体をさらに備えることを特徴とする請求項7に記載の装置。
- 前記キャビティを環境に連結する開口部と、
前記開口部内にあるインピーダンス提供構造体と、
をさらに備えることを特徴とする請求項1または7に記載の装置。 - 前記インピーダンス提供構造体が、前記開口部内にある音響抵抗材料を備えることを特徴とする請求項9に記載の装置。
- 前記音響抵抗材料が、ワイヤメッシュであることを特徴とする請求項10に記載の装置。
- 前記音響抵抗材料が、そこを貫通する孔部を有するプラスチック部材を備えることを特徴とする請求項10に記載の装置。
- 前記インピーダンス提供構造体が、前記開口部と環境とを音響的に連結する管体を備えることを特徴とする請求項9に記載の装置。
- 前記管体には、発泡体が充填されていることを特徴とする請求項13に記載の装置。
- 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または7に記載の装置。
- 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15に記載の装置。
- 前記イヤホンが、当該イヤホンが所定位置にあるときに、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部分が前記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または7に記載の装置。
- 前記イヤホンの外側の雑音を検出するための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、
前記フィードバック雑音除去音声信号と前記フィードフォワード雑音除去音声信号とを結合し、出力雑音除去音声信号を供給するための回路と、
をさらに備えることを特徴とする請求項1または7に記載の装置。 - 前記経路が、14mm未満の長さを有することを特徴とする請求項1または7に記載の装置。
- 前記経路が、硬質部分と弾性部分とを有するノズルを通過することを特徴とする請求項1または7に記載の装置。
- 前記ノズルが、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、外耳道を当該ノズルで音響的に封止す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20に記載の装置。
- 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間に径方向に位置付けられていることを特徴とする請求項1または7に記載の装置。
- 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経路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または7に記載の装置。
- 比率l/Aが、900[m/m2]以下であることを特徴とする請求項2または7に記載の装置。
- θ>±45°であることを特徴とする請求項3または7に記載の装置。
- 前記経路が、1100[kg/m4]以下の音響質量を有し、
ここで、M=ρl/Aであり、ρが空気の密度であり、Aが当該経路の開口横断面積であり、lが前記経路の長さであることを特徴とする請求項6または7に記載の装置。 - 前記空気の密度ρが、1.2[kg/m3]と推測されることを特徴とする請求項6または7に記載の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/480,766 US9082388B2 (en) | 2012-05-25 | 2012-05-25 | In-ear active noise reduction earphone |
US13/480,766 | 2012-05-25 | ||
PCT/US2013/042231 WO2013177285A1 (en) | 2012-05-25 | 2013-05-22 | In-ear active noise reduction earphone |
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JP2016187934A Division 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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JP2015521008A true JP2015521008A (ja) | 2015-07-23 |
JP6017682B2 JP6017682B2 (ja) | 2016-11-02 |
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JP2015514153A Active JP6017682B2 (ja) | 2012-05-25 | 2013-05-22 | インナーイヤー式雑音低減イヤホン |
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 |
JP2017179952A Active JP6556795B2 (ja) | 2012-05-25 | 2017-09-20 | インナーイヤー式雑音低減イヤホン |
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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 |
JP2017179952A Active JP6556795B2 (ja) | 2012-05-25 | 2017-09-20 | インナーイヤー式雑音低減イヤホン |
Country Status (7)
Country | Link |
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US (3) | US9082388B2 (ja) |
EP (2) | EP2856771B1 (ja) |
JP (3) | JP6017682B2 (ja) |
CN (2) | CN107864418B (ja) |
HK (1) | HK1207232A1 (ja) |
MY (1) | MY168899A (ja) |
WO (1) | WO2013177285A1 (ja) |
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HK1207232A1 (en) | 2016-01-22 |
US20130315412A1 (en) | 2013-11-28 |
MY168899A (en) | 2018-12-04 |
JP2017022766A (ja) | 2017-01-26 |
EP2856771A1 (en) | 2015-04-08 |
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