JPS60155215U - volume control device - Google Patents
volume control deviceInfo
- Publication number
- JPS60155215U JPS60155215U JP4265084U JP4265084U JPS60155215U JP S60155215 U JPS60155215 U JP S60155215U JP 4265084 U JP4265084 U JP 4265084U JP 4265084 U JP4265084 U JP 4265084U JP S60155215 U JPS60155215 U JP S60155215U
- Authority
- JP
- Japan
- Prior art keywords
- audio signal
- output
- volume control
- level
- circuit
- 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
Links
Landscapes
- Control Of Amplification And Gain Control (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
第１図は本考案の一実施例の構成図、第２図は信号波形
図である。
１・・・音声信号レベル調整回路、２・・・音量制御信
号形成回路、４・・・スピーカ、５・・・マイクロフォ
−ン、６・・・増幅器、７・・・音声信号成分キャン
セル回路、１０・・・遅延回路。FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a signal waveform diagram. DESCRIPTION OF SYMBOLS 1...Audio signal level adjustment circuit, 2...Volume control signal formation circuit, 4...Speaker, 5...Microphone, 6...Amplifier, 7...Audio signal component cancellation circuit , 10...delay circuit.
Claims (1)
声信号レベル調整回路と、前記音声信号レベル調整回路
によりそのレベルが調整された音声信号を電気音響変換
して音声として外部に出力する音声出力部とを含む音量
制御装置において、前記音声出力部から出力される音声
と外部騒音とを検出出力する検出手段と、前記検出出力
を増幅する増幅器と、前記音声信号レベル調整回路によ
ってレベル調整された音声信号を所定時間遅延させて該
音声信号の位相を前記増幅器出力の位相に一致させて出
力する遅延回路と、前記増幅器出力のレベルと前記遅延
回路からの音声信号のレベルとの差に対応する比較出力
を出力する音声信号成分キャンセル回路と、前記音声信
号成分キャンセール回路の出力に基づいて前記音量制御
信号を形成して前記音声信号レベル調整回路に出力する
音量制御信号形成回路とを含むことを特徴とする音量制
御装置。an audio signal level adjustment circuit that adjusts the level of the audio signal in response to a volume control signal; and an audio output that electroacoustically converts the audio signal whose level has been adjusted by the audio signal level adjustment circuit and outputs it to the outside as audio. a detection means for detecting and outputting the sound output from the audio output section and external noise; an amplifier for amplifying the detection output; and a volume control device having a level adjusted by the audio signal level adjustment circuit. a delay circuit that delays an audio signal for a predetermined time to match the phase of the audio signal with the phase of the output of the amplifier and outputs the same; and a delay circuit that corresponds to the difference between the level of the output of the amplifier and the level of the audio signal from the delay circuit. The audio signal component canceling circuit outputs a comparison output, and the volume control signal forming circuit forms the volume control signal based on the output of the audio signal component canceling circuit and outputs it to the audio signal level adjustment circuit. A volume control device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4265084U JPS60155215U (en) | 1984-03-24 | 1984-03-24 | volume control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4265084U JPS60155215U (en) | 1984-03-24 | 1984-03-24 | volume control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60155215U true JPS60155215U (en) | 1985-10-16 |
Family
ID=30553601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4265084U Pending JPS60155215U (en) | 1984-03-24 | 1984-03-24 | volume control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60155215U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49120506A (en) * | 1973-03-16 | 1974-11-18 | ||
| JPS5482955A (en) * | 1977-12-15 | 1979-07-02 | Nippon Technical | Automatic sound volume controller |
-
1984
- 1984-03-24 JP JP4265084U patent/JPS60155215U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49120506A (en) * | 1973-03-16 | 1974-11-18 | ||
| JPS5482955A (en) * | 1977-12-15 | 1979-07-02 | Nippon Technical | Automatic sound volume controller |
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