JPS6289832U - - Google Patents
Info
- Publication number
- JPS6289832U JPS6289832U JP18127185U JP18127185U JPS6289832U JP S6289832 U JPS6289832 U JP S6289832U JP 18127185 U JP18127185 U JP 18127185U JP 18127185 U JP18127185 U JP 18127185U JP S6289832 U JPS6289832 U JP S6289832U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- level
- audio signal
- detection circuit
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005236 sound signal Effects 0.000 claims 4
- 238000006243 chemical reaction Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Description
第１図及び第５図は本考案の実施例を示すブロ
ツク図、第２図、第３図、第４図及び第６図は、
信号レベル検出回路の構成例を示すブロツク図、
第７図は従来例を示すブロツク図、第８図は従来
の信号レベル検出回路の構成例を示すブロツク図
、第９図は、前方スピーカ群及び後方スピーカ群
の車内配置を説明する為の図である。
主要部分の符号の説明、２……周波数特性変化
回路、３……信号レベル検出回路、８，８０……
音声出力回路、８ａ，８ｂ……パワーアンプ、９
……前方スピーカ群、１０……後方スピーカ群、
８１……バランス回路。
1 and 5 are block diagrams showing an embodiment of the present invention, and FIGS. 2, 3, 4, and 6 are block diagrams showing an embodiment of the present invention.
A block diagram showing a configuration example of a signal level detection circuit,
Fig. 7 is a block diagram showing a conventional example, Fig. 8 is a block diagram showing an example of the configuration of a conventional signal level detection circuit, and Fig. 9 is a diagram for explaining the arrangement of the front speaker group and the rear speaker group in the car. It is. Explanation of symbols of main parts, 2... Frequency characteristic changing circuit, 3... Signal level detection circuit, 8, 80...
Audio output circuit, 8a, 8b...Power amplifier, 9
...Front speaker group, 10...Rear speaker group,
81...Balance circuit.
Claims (1)
レベル信号を得るオーデイオ信号レベル検出回路
と、車両内の騒音レベルに対応したノイズレベル
信号を得るノイズレベル検出回路と、前記オーデ
イオ信号と前記ノイズレベル信号とに基づいて制
御信号を発生する制御回路と、前記制御信号に対
応して前記オーデイオ信号の各周波数成分を選択
的に増幅する周波数特性変化回路と、アンプとス
ピーカとを含み前記周波数特性変化回路の出力信
号を増幅して音響エネルギーに変換する電気音響
変換手段とを備えた走行騒音補正装置であつて、
前記電気音響変換手段の変換利得の増減に対応し
て前記オーデイオ信号レベル検出回路の利得が設
定されることを特徴とする走行騒音補正装置。 an audio signal level detection circuit that obtains an audio level signal corresponding to the level of the audio signal; a noise level detection circuit that obtains a noise level signal corresponding to the noise level in the vehicle; A control circuit that generates a control signal, a frequency characteristic change circuit that selectively amplifies each frequency component of the audio signal in response to the control signal, an amplifier and a speaker, and outputs the output signal of the frequency characteristic change circuit. A running noise correction device comprising an electroacoustic conversion means for amplifying and converting into acoustic energy,
A running noise correction device characterized in that a gain of the audio signal level detection circuit is set in response to an increase or decrease in a conversion gain of the electroacoustic conversion means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18127185U JPH0522977Y2 (en) | 1985-11-22 | 1985-11-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18127185U JPH0522977Y2 (en) | 1985-11-22 | 1985-11-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6289832U true JPS6289832U (en) | 1987-06-09 |
| JPH0522977Y2 JPH0522977Y2 (en) | 1993-06-14 |
Family
ID=31125985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18127185U Expired - Lifetime JPH0522977Y2 (en) | 1985-11-22 | 1985-11-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0522977Y2 (en) |
-
1985
- 1985-11-22 JP JP18127185U patent/JPH0522977Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0522977Y2 (en) | 1993-06-14 |