JPS6440913U - - Google Patents

Info

Publication number
JPS6440913U
JPS6440913U JP13656287U JP13656287U JPS6440913U JP S6440913 U JPS6440913 U JP S6440913U JP 13656287 U JP13656287 U JP 13656287U JP 13656287 U JP13656287 U JP 13656287U JP S6440913 U JPS6440913 U JP S6440913U
Authority
JP
Japan
Prior art keywords
audio signal
detector
pass filter
voltage value
low
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
JP13656287U
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 JP13656287U priority Critical patent/JPS6440913U/ja
Publication of JPS6440913U publication Critical patent/JPS6440913U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Filters And Equalizers (AREA)

Description

【図面の簡単な説明】
第１図は本考案にかかるノイズリダクシヨン回
路のブロツク図、第２図は第１図の各部波形図、
第３図は従来のノイズリダクシヨン回路のブロツ
ク、第４図は第３図の動作説明図である。 １……フイルタ、２……３デテクタ、３……周
波数帯域幅可変のローパスフイルタ、４……遅延
回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 音声信号レベルに応じた電圧値を有するコント
    ロール信号を発生するデテクタと、 音声信号が入力され、該音声信号を遅延させる
    遅延回路と、 遅延回路に接続され、前記コントロール信号の
    電圧値により周波数帯域幅を変化させるローパス
    フイルタとを有し、 該ローパスフイルタ出力をスピーカに入力する
    ことを特徴とするノイズリダクシヨン回路。
JP13656287U 1987-09-07 1987-09-07 Pending JPS6440913U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13656287U JPS6440913U (ja) 1987-09-07 1987-09-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13656287U JPS6440913U (ja) 1987-09-07 1987-09-07

Publications (1)

Publication Number Publication Date
JPS6440913U true JPS6440913U (ja) 1989-03-10

Family

ID=31397188

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13656287U Pending JPS6440913U (ja) 1987-09-07 1987-09-07

Country Status (1)

Country Link
JP (1) JPS6440913U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7382551B2 (en) 2005-11-30 2008-06-03 Canon Kabushiki Kaisha Zoom lens system and image-pickup apparatus including same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117012A (en) * 1976-03-29 1977-10-01 Hitachi Denshi Ltd S/n improvement
JPS616571A (ja) * 1984-06-19 1986-01-13 三洋電機株式会社 貯蔵庫

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117012A (en) * 1976-03-29 1977-10-01 Hitachi Denshi Ltd S/n improvement
JPS616571A (ja) * 1984-06-19 1986-01-13 三洋電機株式会社 貯蔵庫

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7382551B2 (en) 2005-11-30 2008-06-03 Canon Kabushiki Kaisha Zoom lens system and image-pickup apparatus including same

Similar Documents

Publication Publication Date Title
JPS6440913U (ja)
JPS6214736Y2 (ja)
JPS61103918U (ja)
JPS62158672U (ja)
JPS63147023U (ja)
JPH03109428U (ja)
JPH02136297U (ja)
JPH0312595U (ja)
JPS6157662U (ja)
JPS6157756U (ja)
JPS62139153U (ja)
JPH0272016U (ja)
JPS6365389U (ja)
JPH02118319U (ja)
JPS6381515U (ja)
JPH01137609U (ja)
JPS6045518U (ja) 自動レベル制御回路
JPH0221892U (ja)
JPH03110663U (ja)
JPH0266015U (ja)
JPH0170436U (ja)
JPS61134125U (ja)
JPS6374900U (ja)
JPH0244420U (ja)
JPS61131130U (ja)