JP2007295580A - 高周波補償 - Google Patents
高周波補償 Download PDFInfo
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- JP2007295580A JP2007295580A JP2007112897A JP2007112897A JP2007295580A JP 2007295580 A JP2007295580 A JP 2007295580A JP 2007112897 A JP2007112897 A JP 2007112897A JP 2007112897 A JP2007112897 A JP 2007112897A JP 2007295580 A JP2007295580 A JP 2007295580A
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- khz
- frequency response
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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
-
- 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
- G10K11/17855—Methods, e.g. algorithms; Devices for improving speed or power requirements
-
- 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
-
- 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
- G10K11/17885—General system configurations additionally using a desired external signal, e.g. pass-through audio such as music or speech
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/033—Headphones for stereophonic communication
Abstract
【解決手段】 音響ドライバーを備える音響ブロックを提供し、音響ドライバーは、音響エネルギーを放射する反射板に取り付け線に沿って機械的に結合されるボイスコイルを備え、音響ブロックは、音響ダイアフラムの意図される振動方向に平行で取り付け線と交差する線に沿って位置決めされるマイクロホンをさらに備え、音響ブロックは或る振幅周波数応答を特徴とし、10kHzを超える少なくとも1つのスペクトル範囲にわたって正の傾きを有する補償パターンにより振幅周波数応答を補償する。
【選択図】 図2B
Description
図2A及び図2Bによる配置は、ボイスコイルによるダイアフラムへの線42に沿った力の付与と音響エネルギーの放射との間の時間遅延(ひいては、ボイスコイルによる力の付与とマイクロホン11’における音響エネルギーの到達との間の時間遅延)が、ボイスコイル43とダイアフラム40との間の取り付け線42と整列していない位置、例えばダイアフラムの中央の上の点52又はダイアフラムの縁の上の点50にマイクロホンを配置した場合の時間遅延よりも少ないために有利である。
Claims (17)
- アクティブノイズ低減ヘッドフォンのフィードバック回路であって、
第1の振幅周波数応答を特徴とする音響ブロックと、
第2の振幅周波数応答を特徴とし、該第2の振幅周波数応答を前記第1の振幅周波数応答と合成して合成振幅周波数応答を提供する補償器と、
を備え、前記第2の振幅周波数応答は、10kHzを超えるスペクトル部分における周波数間隔で正の傾きを有するパターンを特徴とする、フィードバック回路。 - 前記パターンは、20kHz〜50kHzの間で正の傾きを有する、請求項1に記載のフィードバック回路。
- 前記パターンは、20kHz〜100kHzの間で正の傾きを有する、請求項2に記載のフィードバック回路。
- 前記補償器はデジタルフィルタを含む、請求項1に記載のフィードバック回路。
- 前記補償器はアナログフィルタを含む、請求項1に記載のフィードバック回路。
- 或る振幅周波数応答を特徴とするアクティブノイズ低減ヘッドフォンにおいて、20kHz〜50kHzの間で正の傾きを有するパターンにより前記振幅周波数応答を補償することを含む方法。
- 前記補償は、20kHz〜100kHzの間で正の傾きを有するパターンにより前記振幅周波数応答を補償することを含む、請求項6に記載の方法。
- 20kHz〜50kHzの間の周波数範囲において正の傾きを特徴とする、アクティブノイズ低減ヘッドフォンの補償パターン。
- 20kHz〜100kHzの間の周波数範囲において正の傾きをさらに特徴とする、請求項8に記載のアクティブノイズ低減ヘッドフォンの補償パターン。
- 20kHz〜100kHzの間で2次以上の正の傾きをさらに特徴とする、請求項8に記載のアクティブノイズ低減ヘッドフォンの補償パターン。
- 10kHzを超えて少なくとも1オクターブの範囲にわたり正の傾きを特徴とする、アクティブノイズ低減ヘッドフォンの補償パターン。
- 少なくとも2オクターブの範囲にわたる正の傾きを特徴とする、請求項11に記載のアクティブノイズ低減ヘッドフォンの補償パターン。
- 少なくとも3オクターブの範囲にわたる正の傾きを特徴とする、請求項12に記載のアクティブノイズ低減ヘッドフォンの補償パターン。
- 或る振幅周波数応答を特徴とするアクティブノイズ低減ヘッドフォンを提供し、
10kHzを超えるスペクトル範囲の少なくとも一部において少なくとも1オクターブにわたる正の傾きを有するパターンにより前記振幅周波数応答を補償する、
ことを含む方法。 - 前記補償は、10kHzを超えて少なくとも2オクターブにわたる正の傾きを有するパターンにより前記振幅周波数応答を補償することを含む、請求項14に記載の方法。
- 前記補償は、10kHzを超えて少なくとも3オクターブにわたる正の傾きを有するパターンにより前記振幅周波数応答を補償することを含む、請求項14に記載の方法。
- アクティブノイズ低減ヘッドフォンのフィードバック回路の位相マージンを増大させる方法であって、
音響ドライバーを備える音響ブロックを提供し、該音響ドライバーは、音響エネルギー放射ダイアフラムに取り付け線に沿って機械的に結合されるボイスコイルを備え、前記音響ブロックは、前記音響ダイアフラムの意図された振動方向と平行で前記取り付け線と交差する線に沿って位置決めされるマイクロホンをさらに備え、前記音響ブロックは或る振幅周波数応答を特徴とし、
10kHzを超える少なくとも1つのスペクトル範囲にわたって正の傾きを有する補償パターンにより前記振動周波数応答を補償する、
ことを含む方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/409,894 US8054992B2 (en) | 2006-04-24 | 2006-04-24 | High frequency compensating |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2007295580A true JP2007295580A (ja) | 2007-11-08 |
Family
ID=38292718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007112897A Pending JP2007295580A (ja) | 2006-04-24 | 2007-04-23 | 高周波補償 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8054992B2 (ja) |
EP (1) | EP1850631B1 (ja) |
JP (1) | JP2007295580A (ja) |
CN (1) | CN101068445B (ja) |
HK (1) | HK1111853A1 (ja) |
Families Citing this family (27)
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GB2446966B (en) | 2006-04-12 | 2010-07-07 | Wolfson Microelectronics Plc | Digital circuit arrangements for ambient noise-reduction |
US8054992B2 (en) | 2006-04-24 | 2011-11-08 | Bose Corporation | High frequency compensating |
US8077874B2 (en) * | 2006-04-24 | 2011-12-13 | Bose Corporation | Active noise reduction microphone placing |
TWI310177B (en) * | 2006-12-29 | 2009-05-21 | Ind Tech Res Inst | Noise canceling device and method thereof |
US8135140B2 (en) | 2008-11-20 | 2012-03-13 | Harman International Industries, Incorporated | System for active noise control with audio signal compensation |
US9020158B2 (en) | 2008-11-20 | 2015-04-28 | Harman International Industries, Incorporated | Quiet zone control system |
US8718289B2 (en) | 2009-01-12 | 2014-05-06 | Harman International Industries, Incorporated | System for active noise control with parallel adaptive filter configuration |
US8189799B2 (en) | 2009-04-09 | 2012-05-29 | Harman International Industries, Incorporated | System for active noise control based on audio system output |
US8199924B2 (en) | 2009-04-17 | 2012-06-12 | Harman International Industries, Incorporated | System for active noise control with an infinite impulse response filter |
US8085946B2 (en) * | 2009-04-28 | 2011-12-27 | Bose Corporation | ANR analysis side-chain data support |
US8345888B2 (en) * | 2009-04-28 | 2013-01-01 | Bose Corporation | Digital high frequency phase compensation |
US8077873B2 (en) | 2009-05-14 | 2011-12-13 | Harman International Industries, Incorporated | System for active noise control with adaptive speaker selection |
CN105611439B (zh) * | 2010-04-19 | 2019-01-11 | 海宝拉株式会社 | 耳麦 |
US8553900B2 (en) * | 2010-05-14 | 2013-10-08 | Creative Technology Ltd | Noise reduction circuit with monitoring functionality |
US9837066B2 (en) | 2013-07-28 | 2017-12-05 | Light Speed Aviation, Inc. | System and method for adaptive active noise reduction |
US9573165B2 (en) | 2014-08-22 | 2017-02-21 | Apple Inc. | Hydrophobic mesh cover |
CN105530569A (zh) | 2014-09-30 | 2016-04-27 | 杜比实验室特许公司 | 耳机混合主动噪声消除和噪声补偿 |
US9955244B2 (en) * | 2015-05-27 | 2018-04-24 | Apple Inc. | Electronic device with speaker enclosure sensor |
CN106092306B (zh) * | 2016-06-02 | 2019-04-30 | 青岛歌尔声学科技有限公司 | 一种声压测试方法和声压测试系统 |
US10595107B2 (en) | 2016-09-20 | 2020-03-17 | Apple Inc. | Speaker module architecture |
TWI604439B (zh) | 2017-01-17 | 2017-11-01 | 瑞昱半導體股份有限公司 | 噪音消除裝置與噪音消除方法 |
EP3486896B1 (en) | 2017-11-16 | 2023-08-23 | ams AG | Noise cancellation system and signal processing method |
US10872592B2 (en) | 2017-12-15 | 2020-12-22 | Skullcandy, Inc. | Noise-canceling headphones including multiple vibration members and related methods |
US10484792B2 (en) | 2018-02-16 | 2019-11-19 | Skullcandy, Inc. | Headphone with noise cancellation of acoustic noise from tactile vibration driver |
CN108882094B (zh) * | 2018-07-27 | 2020-03-13 | 歌尔科技有限公司 | 一种反馈降噪耳机及其反馈电路 |
CN109104669B (zh) * | 2018-08-14 | 2020-11-10 | 歌尔科技有限公司 | 一种耳机的音质修正方法、系统及耳机 |
CN109151643A (zh) * | 2018-09-07 | 2019-01-04 | 歌尔科技有限公司 | 耳机和耳机单元 |
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JPH01196999A (ja) * | 1987-12-28 | 1989-08-08 | Bose Corp | ヘッドホン装置 |
JPH0431699A (ja) * | 1990-05-28 | 1992-02-03 | Shinko Electric Co Ltd | ファン用消音装置 |
JPH0879878A (ja) * | 1994-09-05 | 1996-03-22 | Sony Corp | ヘッドホン装置 |
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-
2006
- 2006-04-24 US US11/409,894 patent/US8054992B2/en active Active
-
2007
- 2007-04-23 JP JP2007112897A patent/JP2007295580A/ja active Pending
- 2007-04-24 EP EP07106779.7A patent/EP1850631B1/en active Active
- 2007-04-24 CN CN2007101044990A patent/CN101068445B/zh active Active
-
2008
- 2008-04-30 HK HK08104766.6A patent/HK1111853A1/zh not_active IP Right Cessation
Patent Citations (3)
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JPH01196999A (ja) * | 1987-12-28 | 1989-08-08 | Bose Corp | ヘッドホン装置 |
JPH0431699A (ja) * | 1990-05-28 | 1992-02-03 | Shinko Electric Co Ltd | ファン用消音装置 |
JPH0879878A (ja) * | 1994-09-05 | 1996-03-22 | Sony Corp | ヘッドホン装置 |
Also Published As
Publication number | Publication date |
---|---|
US8054992B2 (en) | 2011-11-08 |
US20070253567A1 (en) | 2007-11-01 |
EP1850631A2 (en) | 2007-10-31 |
CN101068445A (zh) | 2007-11-07 |
HK1111853A1 (zh) | 2008-08-15 |
EP1850631A3 (en) | 2009-06-24 |
CN101068445B (zh) | 2013-06-12 |
EP1850631B1 (en) | 2016-03-23 |
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