JPS5813722U - Sound quality correction circuit - Google Patents
Sound quality correction circuitInfo
- Publication number
- JPS5813722U JPS5813722U JP10816281U JP10816281U JPS5813722U JP S5813722 U JPS5813722 U JP S5813722U JP 10816281 U JP10816281 U JP 10816281U JP 10816281 U JP10816281 U JP 10816281U JP S5813722 U JPS5813722 U JP S5813722U
- Authority
- JP
- Japan
- Prior art keywords
- audio signal
- volume
- sound quality
- correction circuit
- quality correction
- 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
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図は音質補正回路のない場合におけるポータプルラ
ジオカセットのスピーカ音圧特性曲線図、 −第２図は
従来の音質補正回路の結線図、第３図は第２図のスピー
カ音圧特性曲線図、第４図以下の図面はこの考案の音質
補正回路の１実施例を示し、第４図は結線図、第５図は
第４図のＡ点の周波数特性図、第６図は第４図のスピー
カ音圧特性曲線図である。
１・・・・・・第１フィルタ部、２・・・・・・第２フ
イルタ蔀、３・・・・・・低減抽出部、４・・・・・・
整流部、Ａｍｐ２・・・・・・メインアンプ、Ｑ・・・
・・・半導体スイッチ、Ｓ２゜Ｓ３・・・・・・第２．
第３切換スイツチ。Figure 1 is a speaker sound pressure characteristic curve diagram of a portable radio cassette without a sound quality correction circuit, - Figure 2 is a wiring diagram of a conventional sound quality correction circuit, and Figure 3 is a speaker sound pressure characteristic curve diagram of Figure 2. , FIG. 4 and the following drawings show one embodiment of the sound quality correction circuit of this invention, FIG. 4 is a wiring diagram, FIG. FIG. 3 is a speaker sound pressure characteristic curve diagram. DESCRIPTION OF SYMBOLS 1...First filter section, 2...Second filter section, 3...Reduction extraction section, 4......
Rectifier section, Amp2... Main amplifier, Q...
...Semiconductor switch, S2゜S3...Second.
Third changeover switch.
Claims (1)
と、該第１フィルタ部を介した前記音声信号のレベル調
整用ボリウムと、該ボリウムとともに前記音声信号の高
域および低域を補正する第２フィルタ部と、前記ボリウ
ムを介した音声信号の増幅回路と、該増幅回路から出力
された音声信号の低域抽出部と、該抽出部の出力を整流
する整流部と、該整流部の出力によりオンし前記第１フ
イルタのフィルタ効果を低減させる半導体スイッチとを
備えた音質補正回路。 ■ 第１フィルタ部を離脱させる切換スイッチを設けた
実用新案登録請求の範囲第１項に記載の音質補正回路。[Claims for Utility Model Registration] ■ A first filter section for improving the low frequency range of an input audio signal, a volume for adjusting the level of the audio signal via the first filter section, and a volume for adjusting the level of the audio signal together with the volume. a second filter section for correcting high and low frequencies; an amplifying circuit for the audio signal via the volume; a low-frequency extracting section for the audio signal output from the amplifying circuit; and rectifying the output of the extracting section. and a semiconductor switch that is turned on by the output of the rectifier to reduce the filtering effect of the first filter. (2) The sound quality correction circuit according to claim 1, which is provided with a changeover switch for removing the first filter section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10816281U JPS5813722U (en) | 1981-07-20 | 1981-07-20 | Sound quality correction circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10816281U JPS5813722U (en) | 1981-07-20 | 1981-07-20 | Sound quality correction circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5813722U true JPS5813722U (en) | 1983-01-28 |
Family
ID=29902577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10816281U Pending JPS5813722U (en) | 1981-07-20 | 1981-07-20 | Sound quality correction circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813722U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0197614U (en) * | 1987-12-21 | 1989-06-29 | ||
| JPH03295307A (en) * | 1990-04-12 | 1991-12-26 | Sharp Corp | Sound signal output device |
-
1981
- 1981-07-20 JP JP10816281U patent/JPS5813722U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0197614U (en) * | 1987-12-21 | 1989-06-29 | ||
| JPH03295307A (en) * | 1990-04-12 | 1991-12-26 | Sharp Corp | Sound signal output device |
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