JPS57148413A - Sound absorbing device - Google Patents

Sound absorbing device

Info

Publication number
JPS57148413A
JPS57148413A JP3511481A JP3511481A JPS57148413A JP S57148413 A JPS57148413 A JP S57148413A JP 3511481 A JP3511481 A JP 3511481A JP 3511481 A JP3511481 A JP 3511481A JP S57148413 A JPS57148413 A JP S57148413A
Authority
JP
Japan
Prior art keywords
signal tone
sound absorption
level
amplifier
cmp10
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.)
Granted
Application number
JP3511481A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0128528B2 (enrdf_load_stackoverflow
Inventor
Hiroyuki Naono
Michio Matsumoto
Toshiyuki Shimada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3511481A priority Critical patent/JPS57148413A/ja
Publication of JPS57148413A publication Critical patent/JPS57148413A/ja
Publication of JPH0128528B2 publication Critical patent/JPH0128528B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Control Of Amplification And Gain Control (AREA)
JP3511481A 1981-03-10 1981-03-10 Sound absorbing device Granted JPS57148413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3511481A JPS57148413A (en) 1981-03-10 1981-03-10 Sound absorbing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3511481A JPS57148413A (en) 1981-03-10 1981-03-10 Sound absorbing device

Publications (2)

Publication Number Publication Date
JPS57148413A true JPS57148413A (en) 1982-09-13
JPH0128528B2 JPH0128528B2 (enrdf_load_stackoverflow) 1989-06-02

Family

ID=12432898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3511481A Granted JPS57148413A (en) 1981-03-10 1981-03-10 Sound absorbing device

Country Status (1)

Country Link
JP (1) JPS57148413A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5974800A (ja) * 1982-09-30 1984-04-27 シユア・ブラザ−ズ・インコ−ポレイテツド 音声装置
JPH0327698A (ja) * 1989-03-10 1991-02-06 Nippon Telegr & Teleph Corp <Ntt> 音響信号検出方法
JP2005227511A (ja) * 2004-02-12 2005-08-25 Yamaha Motor Co Ltd 対象音検出方法、音信号処理装置、音声認識装置及びプログラム
US7697699B2 (en) 2004-04-12 2010-04-13 Sony Corporation Method of and apparatus for reducing noise
JP2012016039A (ja) * 2000-04-14 2012-01-19 Harman Internatl Industries Inc 動的音響最適化方法および装置
JP2012134578A (ja) * 2010-12-17 2012-07-12 Fujitsu Ltd 音声処理装置および音声処理プログラム
JP2015056676A (ja) * 2013-09-10 2015-03-23 株式会社リコー 音響処理装置及びプログラム
JP2018098796A (ja) * 2016-12-15 2018-06-21 シバントス ピーティーイー リミテッド 補聴器の動作方法
JP2021010118A (ja) * 2019-07-01 2021-01-28 株式会社リコー 集音ノイズ除去装置、集音ノイズ除去システム及び集音ノイズ除去方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240612U (enrdf_load_stackoverflow) * 1975-09-17 1977-03-23

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240612U (enrdf_load_stackoverflow) * 1975-09-17 1977-03-23

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5974800A (ja) * 1982-09-30 1984-04-27 シユア・ブラザ−ズ・インコ−ポレイテツド 音声装置
JPH0327698A (ja) * 1989-03-10 1991-02-06 Nippon Telegr & Teleph Corp <Ntt> 音響信号検出方法
JP2012016039A (ja) * 2000-04-14 2012-01-19 Harman Internatl Industries Inc 動的音響最適化方法および装置
JP2005227511A (ja) * 2004-02-12 2005-08-25 Yamaha Motor Co Ltd 対象音検出方法、音信号処理装置、音声認識装置及びプログラム
US7697699B2 (en) 2004-04-12 2010-04-13 Sony Corporation Method of and apparatus for reducing noise
JP2012134578A (ja) * 2010-12-17 2012-07-12 Fujitsu Ltd 音声処理装置および音声処理プログラム
US9747919B2 (en) 2010-12-17 2017-08-29 Fujitsu Limited Sound processing apparatus and recording medium storing a sound processing program
JP2015056676A (ja) * 2013-09-10 2015-03-23 株式会社リコー 音響処理装置及びプログラム
JP2018098796A (ja) * 2016-12-15 2018-06-21 シバントス ピーティーイー リミテッド 補聴器の動作方法
US10547956B2 (en) 2016-12-15 2020-01-28 Sivantos Pte. Ltd. Method of operating a hearing aid, and hearing aid
JP2021010118A (ja) * 2019-07-01 2021-01-28 株式会社リコー 集音ノイズ除去装置、集音ノイズ除去システム及び集音ノイズ除去方法

Also Published As

Publication number Publication date
JPH0128528B2 (enrdf_load_stackoverflow) 1989-06-02

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