JP4310477B2 - 騒音低減装置 - Google Patents
騒音低減装置 Download PDFInfo
- Publication number
- JP4310477B2 JP4310477B2 JP2005153221A JP2005153221A JP4310477B2 JP 4310477 B2 JP4310477 B2 JP 4310477B2 JP 2005153221 A JP2005153221 A JP 2005153221A JP 2005153221 A JP2005153221 A JP 2005153221A JP 4310477 B2 JP4310477 B2 JP 4310477B2
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- JP
- Japan
- Prior art keywords
- bone
- conduction
- sound
- noise
- microphone
- 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.)
- Expired - Fee Related
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
た状態を上方から示している。
)を用いて、振動子により頭部内に形成される音圧分布を算出することにより、伝達関数Fを求めることができる。乳様突起−蝸牛間における伝達関数Fの一例を、図4に示す。
2 制御装置
10 気導音抑制部
11 気導マイクロフォン
12 気導スピーカ
15 ディジタルフィルタ
20 骨導音抑制部
21 骨導マイクロフォン
22 骨導スピーカ
25 ディジタルフィルタ
Claims (2)
- 騒音源から人体内を伝達される骨導音を検出する骨導マイクロフォンと、
人体に骨導干渉音を伝達する骨導スピーカと、
前記骨導マイクロフォンからの入力信号を、同振幅で逆位相の信号に変換処理するディジタルフィルタを有し、変換処理後の信号に基づいて前記骨導干渉音を生成する制御手段とを備え、
前記ディジタルフィルタは、前記骨導マイクロフォン及び骨導スピーカの人体への装着位置と内耳位置との間の伝達関数に基づくフィルタ係数を有する騒音低減装置。 - 騒音源からの音波を検出する気導マイクロフォンと、
気導干渉音を音波として出力する気導スピーカと、
前記気導マイクロフォンからの入力信号を、同振幅で逆位相の信号に変換処理するディジタルフィルタを有し、変換処理後の信号に基づいて前記気導干渉音を生成する制御手段とを更に備える請求項1に記載の騒音低減装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005153221A JP4310477B2 (ja) | 2005-05-26 | 2005-05-26 | 騒音低減装置 |
Applications Claiming Priority (1)
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---|---|---|---|
JP2005153221A JP4310477B2 (ja) | 2005-05-26 | 2005-05-26 | 騒音低減装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006325895A JP2006325895A (ja) | 2006-12-07 |
JP4310477B2 true JP4310477B2 (ja) | 2009-08-12 |
Family
ID=37548235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005153221A Expired - Fee Related JP4310477B2 (ja) | 2005-05-26 | 2005-05-26 | 騒音低減装置 |
Country Status (1)
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JP (1) | JP4310477B2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7347110B2 (ja) | 2019-10-17 | 2023-09-20 | マツダ株式会社 | 車両の前部車体構造 |
JP7354757B2 (ja) | 2019-10-17 | 2023-10-03 | マツダ株式会社 | 車両の前部車体構造 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5332734B2 (ja) | 2009-03-04 | 2013-11-06 | コニカミノルタ株式会社 | 静電荷像現像用トナーの製造方法 |
FR3006093B1 (fr) | 2013-05-23 | 2016-04-01 | Elno | Dispositif acoustique apte a realiser une reduction active de bruit |
CN107302731A (zh) * | 2017-08-15 | 2017-10-27 | 常德沁音科技有限公司 | 一种基于骨传导的耳机及其降噪方法 |
CN109949790A (zh) * | 2019-03-13 | 2019-06-28 | 姚天扬 | 前馈式室内主动降噪系统 |
CN111954143B (zh) * | 2020-08-29 | 2021-12-24 | 深圳市韶音科技有限公司 | 一种获取振动传递函数的方法和系统 |
DE102022204857A1 (de) | 2022-05-17 | 2023-11-23 | Vimelio GmbH | Verfahren, Modulsystem und System zur Verringerung von medizinischen Instrumenten hervorgerufene Schallbelastungen |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57148942A (en) * | 1981-03-10 | 1982-09-14 | Matsushita Electric Ind Co Ltd | Dental noise eliminating apparatus |
JPH04242638A (ja) * | 1990-12-28 | 1992-08-31 | Yoshida Dental Mfg Co Ltd | 歯科用切削器具の消音装置 |
JP3907215B2 (ja) * | 1994-01-18 | 2007-04-18 | 富士通テン株式会社 | 騒音制御装置 |
JPH10126893A (ja) * | 1996-10-18 | 1998-05-15 | Matsushita Electric Ind Co Ltd | 補聴器 |
JP2004191871A (ja) * | 2002-12-13 | 2004-07-08 | Sumitomo Electric Ind Ltd | 車内消音システム、騒音消去装置及び車内消音方法 |
-
2005
- 2005-05-26 JP JP2005153221A patent/JP4310477B2/ja not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7347110B2 (ja) | 2019-10-17 | 2023-09-20 | マツダ株式会社 | 車両の前部車体構造 |
JP7354757B2 (ja) | 2019-10-17 | 2023-10-03 | マツダ株式会社 | 車両の前部車体構造 |
Also Published As
Publication number | Publication date |
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JP2006325895A (ja) | 2006-12-07 |
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