JP5265373B2 - ノイズ消去イヤホン - Google Patents
ノイズ消去イヤホンInfo
- Publication number
- JP5265373B2 JP5265373B2 JP2008539531A JP2008539531A JP5265373B2 JP 5265373 B2 JP5265373 B2 JP 5265373B2 JP 2008539531 A JP2008539531 A JP 2008539531A JP 2008539531 A JP2008539531 A JP 2008539531A JP 5265373 B2 JP5265373 B2 JP 5265373B2
- Authority
- JP
- Japan
- Prior art keywords
- earphone
- acoustic
- ear
- ear canal
- housing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 230000008030 elimination Effects 0.000 title description 3
- 238000003379 elimination reaction Methods 0.000 title description 3
- 210000000613 ear canal Anatomy 0.000 claims description 37
- 238000011084 recovery Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 13
- 230000004044 response Effects 0.000 description 10
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
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- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
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- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 210000003027 ear inner Anatomy 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
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- 230000010355 oscillation Effects 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- 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
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
電気信号に応答して音を発生させるための音響変換器とマイクロフォンとを有するイヤーバッドイヤホンと、
マイクロフォンからのフィードバック信号を受信し、使用時にはノイズを低減するために適切な信号を音響変換器に供給するように構成されたフィードバックノイズ消去回路と、
を含むイヤホン・フィードバックノイズ消去システムを提供する。
図1は、イヤホンアセンブリを含むフィードバック制御されたノイズ消去システムの平面図である。
図2は、2つのイヤホンアセンブリの斜視図である。
図3は、図2のイヤホンアセンブリの1つの分解斜視図である。
図4は、イヤホンアセンブリの耳介部分と該アセンブリの管部分との間の調節可能な相互接続を支持する図3の特徴を極めて詳細に示す図である。
図5は、図2によるイヤホンの背面図である。
図6は、図5の線分A−Aを通る断面図である。
図7Aは、外耳道の中に配置された本発明のイヤホンの断面を表す構成図である。
図7Bは、開ループ音響装置に関する周波数(Hz)に対する伝達関数ゲインを説明するグラフであり、位相回復の効果を示す。
図7Cは、開ループ音響装置に関する周波数(Hz)に対する位相を説明するグラフであり、イヤホンの設計によってもたらされた位相回復を示す。
図8は、人間の耳の外耳道内部における本発明のイヤホンアセンブリの概略断面図である。
図9は、本発明によるフィードバックノイズ消去制御システムの簡略化された構成図である。
図10は、周波数(Hz)に対する誤差信号の大きさ(dB)を示すグラフである。
e(s)=1/(1+C(s)G(s))
によって与えられる。
Claims (18)
- フィードバックアクティブノイズ消去システムのためのイヤホンであって、音響出口を備えるとともに外耳道の中又は入口に収容されるように構成されたハウジングと、前記ハウジング内に設けられたスピーカーと、前記ハウジング内に設けられたマイクロフォンとを備え、前記スピーカー及び前記マイクロフォンは、フィードバックコントローラに接続されて閉ループのアクティブノイズ消去システムをもたらすように構成され、前記イヤホンは、前記スピーカーからパイプを通って前記音響出口に至る音響経路を備えることにより、前記パイプと前記外耳道との間に所定の周波数でまたは所定の周波数帯域の全域にてヘルムホルツ共鳴を生じさせて、前記閉ループシステムの安定性を改善するようにされてなるイヤホン。
- 前記共鳴は位相回復をもたらすものである請求項1に記載のイヤホン。
- 前記パイプは、細長い、または管状の音響経路を備える請求項1または2に記載のイヤホン。
- 前記所定の周波数は実質的に500Hz〜1kHzの範囲内である請求項1〜3のいずれか1項に記載のイヤホン。
- 前記ハウジングは前記音響出口を前記外耳道の中又は入口で音響的に実質的に遮蔽する密閉手段を備えている請求項1〜4のいずれか1項に記載のイヤホン。
- 前記スピーカーと前記パイプとの間の前記音響経路に空洞を備えている請求項1に記載のイヤホン。
- 前記空洞は前記スピーカーと前記パイプとの間に音響インピーダンスをもたらすものである請求項6に記載のイヤホン。
- 前記ハウジングは、人間の耳の耳介内に収容されるように構成された耳介部分と前記外耳道内に収容されるように構成された管部分とを有し、前記耳介部分は前記スピーカーと前記マイクロフォンとを備え、前記管部分は、これが前記外耳道内に収容されるとともに前記耳介部分は前記耳介内に支持されるように、使用者の前記耳の幾何学的形状に応じて前記耳介部分に対し所定の角度に調節できるように回転可能に取り付けられてなる請求項1〜7のいずれか1項に記載のイヤホン。
- 前記管部分は、これと使用者の前記外耳道との間に効果的な音響的遮蔽を形成する密閉手段を含む請求項5に従属する請求項8に記載のイヤホン。
- 前記空洞は、前記耳介部分と前記管部分との間に設けられている請求項6または7に従属する請求項8に記載のイヤホン。
- 前記管部分の前記耳介部分に対する調整を妨げるように作動するロック手段を含む請求項8〜10の何れか1項に記載のイヤホン。
- 前記ロック手段は、前記管部分の前記耳介部分に対する調整を可能にすべく作動しないようにすることができるものである請求項11に記載のイヤホン。
- 前記管部分は前記外耳道の入口に収容される請求項8〜12のいずれか1項に記載のイヤホン。
- 前記管部分は、前記耳介部分に対して偏心して取り付けられるものである請求項8〜13のいずれか1項に記載のイヤホン。
- 前記管部分は、前記耳介部分の中心軸に対して所定の角度に配置される中心軸を有するものである請求項8〜14のいずれか1項に記載のイヤホン。
- 前記スピーカーと前記マイクロフォンとを有するキャリヤを含み、当該キャリヤは前記ハウジングの中に保持されるように構成される請求項1〜15のいずれか1項に記載のイヤホン。
- 前記ハウジングはそこから垂下して耳の外側に配置するように構成されたステムを有する請求項10に記載のイヤホン。
- 請求項1から17のいずれか1項に記載のイヤホンと、前記マイクロフォンからフィードバック信号を受信し、使用時にアクティブノイズを低減するためにスピーカーに適切な信号を供給するように構成されたフィードバックノイズ消去回路とを含むイヤホン・フィードバックアクティブノイズ消去システム。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ543567A NZ543567A (en) | 2005-11-11 | 2005-11-11 | Earphone and noise cancellation system |
NZ543567 | 2005-11-11 | ||
NZ54524406 | 2006-02-09 | ||
NZ545244 | 2006-02-09 | ||
PCT/IB2006/003179 WO2007054807A2 (en) | 2005-11-11 | 2006-11-13 | Noise cancellation earphone |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009516409A JP2009516409A (ja) | 2009-04-16 |
JP5265373B2 true JP5265373B2 (ja) | 2013-08-14 |
Family
ID=40666712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008539531A Active JP5265373B2 (ja) | 2005-11-11 | 2006-11-13 | ノイズ消去イヤホン |
Country Status (2)
Country | Link |
---|---|
US (1) | US8571227B2 (ja) |
JP (1) | JP5265373B2 (ja) |
Families Citing this family (27)
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WO2012165976A1 (en) * | 2011-06-01 | 2012-12-06 | Phitek Systems Limited | In-ear device incorporating active noise reduction |
KR101341308B1 (ko) * | 2012-03-29 | 2013-12-12 | 신두식 | 이어셋용 방음하우징 및 그를 구비하는 유.무선 이어셋 |
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JP2015005790A (ja) * | 2013-06-19 | 2015-01-08 | 賢太 田中 | イヤホン装置 |
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US9961434B2 (en) | 2014-12-31 | 2018-05-01 | Skullcandy, Inc. | In-ear headphones having a flexible nozzle and related methods |
JP6360633B2 (ja) * | 2015-09-09 | 2018-07-18 | サウンドブリッジ カンパニー リミテッド | イヤーカナルマイクを内蔵するブルートゥースイヤーセットとその制御方法 |
US9401158B1 (en) | 2015-09-14 | 2016-07-26 | Knowles Electronics, Llc | Microphone signal fusion |
US9779716B2 (en) | 2015-12-30 | 2017-10-03 | Knowles Electronics, Llc | Occlusion reduction and active noise reduction based on seal quality |
US9830930B2 (en) | 2015-12-30 | 2017-11-28 | Knowles Electronics, Llc | Voice-enhanced awareness mode |
US9812149B2 (en) | 2016-01-28 | 2017-11-07 | Knowles Electronics, Llc | Methods and systems for providing consistency in noise reduction during speech and non-speech periods |
US10645478B2 (en) | 2017-12-08 | 2020-05-05 | Skullcandy, Inc. | In-ear headphone for improved fit and function, and related methods |
CN208210244U (zh) * | 2018-05-18 | 2018-12-07 | 艾士藍音頻集團有限公司 | 一种耳机 |
JP7137694B2 (ja) | 2018-09-12 | 2022-09-14 | シェンチェン ショックス カンパニー リミテッド | 複数の音響電気変換器を有する信号処理装置 |
CN112312253A (zh) * | 2019-07-31 | 2021-02-02 | 深圳市冠旭电子股份有限公司 | 耳机降噪结构及耳机 |
JP7380314B2 (ja) * | 2020-02-25 | 2023-11-15 | ヤマハ株式会社 | ヘッドホン |
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