JPH0370490U - - Google Patents

Info

Publication number
JPH0370490U
JPH0370490U JP13235289U JP13235289U JPH0370490U JP H0370490 U JPH0370490 U JP H0370490U JP 13235289 U JP13235289 U JP 13235289U JP 13235289 U JP13235289 U JP 13235289U JP H0370490 U JPH0370490 U JP H0370490U
Authority
JP
Japan
Prior art keywords
sound
monitor
microphone
update
input
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.)
Pending
Application number
JP13235289U
Other languages
English (en)
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 filed Critical
Priority to JP13235289U priority Critical patent/JPH0370490U/ja
Publication of JPH0370490U publication Critical patent/JPH0370490U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例に係わる適応型消音
装置を示す構成図、第２図はモニタマイクから入
力されるモニタ入力の平均値と規定値との関係を
示す図、第３図は従来の適応型消音装置を示す構
成図である。 １２……検出マイク、１３……スピーカ、１４
……モニタマイク、１７……コントローラ、２１
……消音制御フイルタ、２９……係数更新部、３
０……モニタ入力監視部。

Claims (1)

    【実用新案登録請求の範囲】
  1. 検出マイクより入力された音に対して同振幅で
    逆位相の音をスピーカより発生させて音エネルギ
    ーをキヤンセルし、さらにモニタマイクで減音効
    果をフイードバツクさせて消音制御フイルタの係
    数を更新・収束させて適応化する適応型消音装置
    において、上記モニタマイクに入力される音の平
    均値が一度規定値以下になり、その後規定値より
    大きくなつた場合には、上記フイルタ係数の更新
    を停止させて、その時の係数値を維持させるモニ
    タ入力監視手段とを具備したことを特徴とする適
    応型消音装置。
JP13235289U 1989-11-14 1989-11-14 Pending JPH0370490U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13235289U JPH0370490U (ja) 1989-11-14 1989-11-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13235289U JPH0370490U (ja) 1989-11-14 1989-11-14

Publications (1)

Publication Number Publication Date
JPH0370490U true JPH0370490U (ja) 1991-07-15

Family

ID=31679814

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13235289U Pending JPH0370490U (ja) 1989-11-14 1989-11-14

Country Status (1)

Country Link
JP (1) JPH0370490U (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0764573A (ja) * 1993-08-27 1995-03-10 Matsushita Electric Ind Co Ltd 能動騒音低減装置
WO2001015137A1 (en) * 1999-08-20 2001-03-01 Matsushita Electric Industrial Co., Ltd. Noise reduction apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0764573A (ja) * 1993-08-27 1995-03-10 Matsushita Electric Ind Co Ltd 能動騒音低減装置
WO2001015137A1 (en) * 1999-08-20 2001-03-01 Matsushita Electric Industrial Co., Ltd. Noise reduction apparatus

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