JPS60124188U - Howling prevention device - Google Patents

Howling prevention device

Info

Publication number
JPS60124188U
JPS60124188U JP911784U JP911784U JPS60124188U JP S60124188 U JPS60124188 U JP S60124188U JP 911784 U JP911784 U JP 911784U JP 911784 U JP911784 U JP 911784U JP S60124188 U JPS60124188 U JP S60124188U
Authority
JP
Japan
Prior art keywords
microphone
control means
gain
output
prevention device
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
JP911784U
Other languages
Japanese (ja)
Inventor
猛 佐藤
芳郎 功力
Original Assignee
パイオニア株式会社
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 パイオニア株式会社 filed Critical パイオニア株式会社
Priority to JP911784U priority Critical patent/JPS60124188U/en
Publication of JPS60124188U publication Critical patent/JPS60124188U/en
Pending legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図ａ、　ｂはハウジング防止の従来の方法を説明す
るためのブロック図、第２図は本考案の一実施例の構成
を示すブロック図である。 １・・・・・・マイクロホン、３・・・・・・増幅器、
４・・・・・・スピーカ、６・・・・・・ＳＣフィルタ
、７・・・・・・電圧制御減衰器、８・・・・・・クロ
ックパルス発生器、９・・・・・・マイク増幅器、１０
・・・・・・周波数カウンタ、１１・・・・・・制御回
路。1A and 1B are block diagrams for explaining a conventional method of housing prevention, and FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention. 1...Microphone, 3...Amplifier,
4...Speaker, 6...SC filter, 7...Voltage control attenuator, 8...Clock pulse generator, 9... Microphone amplifier, 10
...Frequency counter, 11...Control circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] マイクロホンから該マイクロホンの出力により駆動され
−るスピーカまでの信号ライン中に直列に挿入された可
変利得制御手段および１以上のスイッチドキャパシタフ
ィルタと、前記マイクロホンの出力または該マイクロホ
ンから独立してハウジング周波数検出のために設けられ
たマイクロホンの出力を増幅するマイク増幅器と、該マ
イク増幅器の出力信号周波数を計数する周波数カウンタ
と、前記スイッチドキャパシタフィルタにクロックパル
スを供給するクロックパルス発生器と、前記可変利得制
御手段の利得をハウジングを生ずる、　　　まで増大せ
しめ、ハウジング発生のときの前記周波数カウンタの計
数値に対応してスイッチドキャパンクフィルタによりハ
ウリング周波数帯域成分、の利得を減衰させるべきクロ
ックパルス周波数に前記クロックパルス発生器を制御す
る制御する制御手段とを備えてなることを特徴とするハ
ウリング防止装置。variable gain control means and one or more switched capacitor filters inserted in series in a signal line from a microphone to a loudspeaker driven by the output of the microphone; a microphone amplifier that amplifies the output of a microphone provided for detection; a frequency counter that counts the output signal frequency of the microphone amplifier; a clock pulse generator that supplies clock pulses to the switched capacitor filter; The gain of the gain control means is increased to generate housing, and the gain of the howling frequency band component is to be attenuated by a switched capacitive filter corresponding to the count value of the frequency counter at the time of housing generation. 1. A howling prevention device comprising: control means for controlling a clock pulse generator.
JP911784U 1984-01-27 1984-01-27 Howling prevention device Pending JPS60124188U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP911784U JPS60124188U (en) 1984-01-27 1984-01-27 Howling prevention device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP911784U JPS60124188U (en) 1984-01-27 1984-01-27 Howling prevention device

Publications (1)

Publication Number Publication Date
JPS60124188U true JPS60124188U (en) 1985-08-21

Family

ID=30489029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP911784U Pending JPS60124188U (en) 1984-01-27 1984-01-27 Howling prevention device

Country Status (1)

Country Link
JP (1) JPS60124188U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016050967A (en) * 2014-08-28 2016-04-11 株式会社第一興商 Karaoke device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888997A (en) * 1981-11-20 1983-05-27 Matsushita Electric Ind Co Ltd Microphone device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5888997A (en) * 1981-11-20 1983-05-27 Matsushita Electric Ind Co Ltd Microphone device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016050967A (en) * 2014-08-28 2016-04-11 株式会社第一興商 Karaoke device

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