JPS59177210U - Pop noise removal circuit - Google Patents
Pop noise removal circuitInfo
- Publication number
- JPS59177210U JPS59177210U JP7074283U JP7074283U JPS59177210U JP S59177210 U JPS59177210 U JP S59177210U JP 7074283 U JP7074283 U JP 7074283U JP 7074283 U JP7074283 U JP 7074283U JP S59177210 U JPS59177210 U JP S59177210U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- input
- noise removal
- pop noise
- power source
- 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
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図は従来の車載用オーディオシステムのブロック図
であり、第２図は本考案のポツプ雑音除去回路を組み込
んだ車載用オーディオシステムのブロック図であり、第
３図は本考案の説明のためのタイムチャート図である。
Ｂ・・・バッテリー電源、ＡＭＰ・・・パワーアンプ、
ＳＷｌ・・・第１のスイッチ回路、ＳＥＴ・・・オーデ
ィオ機器、ＳＷ２・・・第２のスイッチ回路、ＤＥＬＹ
ｌ・・・第１の遅延回路、ＫＳＷ・・・エンジンキース
イッチ、ＡＮＤ・・・アンド回路、ＤＥＬＹ２・・・第
２の遅延回路。Fig. 1 is a block diagram of a conventional in-vehicle audio system, Fig. 2 is a block diagram of an in-vehicle audio system incorporating the pop noise removal circuit of the present invention, and Fig. 3 is a block diagram for explaining the present invention. FIG. B...Battery power supply, AMP...Power amplifier,
SWl...first switch circuit, SET...audio equipment, SW2...second switch circuit, DELY
l: first delay circuit, KSW: engine key switch, AND: AND circuit, DELY2: second delay circuit.
Claims (1)
のスイッチ回路と、バッテリー電源とオーディオ機器と
の間に介装される第２のスイッチ回路と、前記オーディ
オ機器が動作状態である信号を入力とする第１の遅延回
路と、この第１の遅延回路出力を一方の入力としてバッ
テリー電源からエンジンキースイッチを介して与えられ
る信号を他方の入力としかつその出力によって前記第１
のスイッチ回路を閉成させるアンド回路と、前記エンジ
ンキースイッチを介して与えられる信号を入力としてそ
の出力によって前記第２のスイッチ回路を閉成させる第
２の遅延回路と、から構成されることを特徴とするポツ
プ雑音除去回路。The first interposed between the battery power source and the power amplifier
a second switch circuit interposed between a battery power source and an audio device, a first delay circuit that receives a signal indicating that the audio device is in an operating state, and the first delay circuit. The circuit output is used as one input, the signal given from the battery power source via the engine key switch is used as the other input, and the output is used as the first input.
and a second delay circuit that receives a signal applied through the engine key switch as an input and closes the second switch circuit with its output. Features a pop noise removal circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7074283U JPS59177210U (en) | 1983-05-11 | 1983-05-11 | Pop noise removal circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7074283U JPS59177210U (en) | 1983-05-11 | 1983-05-11 | Pop noise removal circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59177210U true JPS59177210U (en) | 1984-11-27 |
| JPH0136340Y2 JPH0136340Y2 (en) | 1989-11-06 |
Family
ID=30200892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7074283U Granted JPS59177210U (en) | 1983-05-11 | 1983-05-11 | Pop noise removal circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59177210U (en) |
-
1983
- 1983-05-11 JP JP7074283U patent/JPS59177210U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0136340Y2 (en) | 1989-11-06 |
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