JPS59128699U - public address system - Google Patents

public address system

Info

Publication number
JPS59128699U
JPS59128699U JP17762683U JP17762683U JPS59128699U JP S59128699 U JPS59128699 U JP S59128699U JP 17762683 U JP17762683 U JP 17762683U JP 17762683 U JP17762683 U JP 17762683U JP S59128699 U JPS59128699 U JP S59128699U
Authority
JP
Japan
Prior art keywords
signal
output
mixing
accompaniment
speaker
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
JP17762683U
Other languages
Japanese (ja)
Other versions
JPH0113517Y2 (en
Inventor
竹田　幸男
Original Assignee
松下電器産業株式会社
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 松下電器産業株式会社 filed Critical 松下電器産業株式会社
Priority to JP17762683U priority Critical patent/JPS59128699U/en
Publication of JPS59128699U publication Critical patent/JPS59128699U/en
Application granted granted Critical
Publication of JPH0113517Y2 publication Critical patent/JPH0113517Y2/ja
Granted legal-status Critical Current

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  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

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 the drawing]

第１図は従来例を示す回路図、第２図は本考案の一実施
例を示す回路図、第３図は他の実施例の回路図である。 １・・・・・・マイクロホン、２・・・・・・前置増幅
器、６゜１６・・・・・・スピーカ、１１・・・・・・
再生ヘッド、１２・・・・・・前置増幅器、１３・・・
・・・ミキシング抵抗。FIG. 1 is a circuit diagram showing a conventional example, FIG. 2 is a circuit diagram showing one embodiment of the present invention, and FIG. 3 is a circuit diagram of another embodiment. 1...Microphone, 2...Preamplifier, 6゜16...Speaker, 11...
Reproduction head, 12... Preamplifier, 13...
...Mixing resistance.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] マイクロホンからの信号を増幅するマイクロホン信号前
置増幅器と、伴奏用音源信号を増幅する伴奏用信号前置
増幅器と、前記２つの前置増幅器の出力を混合する混合
回路と、この混合回路の第１の混合点からの信号を増幅
する第１の電力増幅器と、その第１の電力増幅器の出力
によって動作する第１のスピーカと、前記第１の混合点
以外で、混合回路の定数を適宜となすことによりマイク
ロホン信号前置増幅器の出力に比べて伴奏用信号前置増
幅器の出力を十分大きな比率で混合した第２の混合点か
らの信号を増幅する第２の電力増幅器と、この第２の電
力増幅器の出力によって動作する第２のスピーカとを備
え、前記第１のスピーカからマイクロホン信号と伴奏用
信号との混合出力音を得、前記第２のスピーカから伴奏
用信号が主体の出力音を得るように構成したことを特徴
とする拡声装置。a microphone signal preamplifier for amplifying a signal from a microphone; an accompaniment signal preamplifier for amplifying an accompaniment sound source signal; a mixing circuit for mixing the outputs of the two preamplifiers; and a first mixing circuit for mixing the outputs of the two preamplifiers. a first power amplifier that amplifies the signal from the mixing point; a first speaker that operates based on the output of the first power amplifier; a second power amplifier for amplifying a signal from a second mixing point where the output of the accompaniment signal preamplifier is mixed at a sufficiently larger ratio than the output of the microphone signal preamplifier; and a second speaker operated by the output of the amplifier, a mixed output sound of a microphone signal and an accompaniment signal is obtained from the first speaker, and an output sound mainly consisting of the accompaniment signal is obtained from the second speaker. A public address system characterized by being configured as follows.
JP17762683U 1983-11-17 1983-11-17 public address system Granted JPS59128699U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17762683U JPS59128699U (en) 1983-11-17 1983-11-17 public address system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17762683U JPS59128699U (en) 1983-11-17 1983-11-17 public address system

Publications (2)

Publication Number Publication Date
JPS59128699U true JPS59128699U (en) 1984-08-29
JPH0113517Y2 JPH0113517Y2 (en) 1989-04-20

Family

ID=30385854

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17762683U Granted JPS59128699U (en) 1983-11-17 1983-11-17 public address system

Country Status (1)

Country Link
JP (1) JPS59128699U (en)

Also Published As

Publication number Publication date
JPH0113517Y2 (en) 1989-04-20

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