JPH01175019U - - Google Patents
Info
- Publication number
- JPH01175019U JPH01175019U JP6991988U JP6991988U JPH01175019U JP H01175019 U JPH01175019 U JP H01175019U JP 6991988 U JP6991988 U JP 6991988U JP 6991988 U JP6991988 U JP 6991988U JP H01175019 U JPH01175019 U JP H01175019U
- Authority
- JP
- Japan
- Prior art keywords
- output signal
- microphone
- memory
- audio
- preamplifier
- 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
- 230000005236 sound signal Effects 0.000 claims 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図はこの考案に係る車載用音響機器のオー
トミユート装置の実施例を示す要部のブロツク図
である。
主要部分の符号の説明、１：マイクロホン、２
：プリアンプ、３：ローパスフイルタ、４：Ａ／
Ｄ変換器、５：メモリ、６：認識器、７：マイク
ロコンピユータ、８：チユーナ、９：テープレコ
ーダ、１０：ミユーテイング回路を内蔵した低周
波増幅回路、１１：スピーカ。
FIG. 1 is a block diagram of essential parts showing an embodiment of an automute device for a vehicle-mounted audio device according to this invention. Explanation of symbols of main parts, 1: Microphone, 2
: Preamplifier, 3: Low pass filter, 4: A/
D converter, 5: memory, 6: recognizer, 7: microcomputer, 8: tuner, 9: tape recorder, 10: low frequency amplification circuit with built-in muting circuit, 11: speaker.
Claims (1)
、 音声を入力するためのマイクロホンと、このマ
イクロホンの出力信号を増幅するプリアンプと、
プリアンプの出力信号の高域周波数成分を遮断す
るローパスフイルタと、このローパスフイルタの
出力信号をデイジタル信号に変換するＡ／Ｄ変換
器と、Ａ／Ｄ変換器の出力信号を記憶するメモリ
と、前記マイクロホンで受信した音声信号と前記
メモリにあらかじめ記憶させた緊急自動車のサイ
レン音であるデイジタル信号とを比較し認識可能
にした認識器と、前記認識器とメモリとを制御す
るマイクロコンピユータと、前記認識器の認識結
果に基づき前記マイクロコンピユータが制御する
ミユーテイング回路とで構成したことを特徴とす
る車載用音響機器のオートミユート装置。[Scope of claim for utility model registration] In an automute device for in-vehicle audio equipment, a microphone for inputting audio, a preamplifier for amplifying the output signal of this microphone,
a low-pass filter that blocks high-frequency components of the output signal of the preamplifier; an A/D converter that converts the output signal of the low-pass filter into a digital signal; and a memory that stores the output signal of the A/D converter; a recognizer capable of recognition by comparing an audio signal received by a microphone with a digital signal that is the siren sound of an emergency vehicle stored in advance in the memory; a microcomputer that controls the recognizer and the memory; 1. An automuting device for an in-vehicle audio device, comprising a muting circuit controlled by the microcomputer based on the recognition result of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6991988U JPH01175019U (en) | 1988-05-28 | 1988-05-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6991988U JPH01175019U (en) | 1988-05-28 | 1988-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01175019U true JPH01175019U (en) | 1989-12-13 |
Family
ID=31295183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6991988U Pending JPH01175019U (en) | 1988-05-28 | 1988-05-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01175019U (en) |
-
1988
- 1988-05-28 JP JP6991988U patent/JPH01175019U/ja active Pending
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