JPS57207410A - Automatic sound volume correcting device - Google Patents
Automatic sound volume correcting deviceInfo
- Publication number
- JPS57207410A JPS57207410A JP9330781A JP9330781A JPS57207410A JP S57207410 A JPS57207410 A JP S57207410A JP 9330781 A JP9330781 A JP 9330781A JP 9330781 A JP9330781 A JP 9330781A JP S57207410 A JPS57207410 A JP S57207410A
- Authority
- JP
- Japan
- Prior art keywords
- output
- noise
- signal
- amplifying section
- lpf
- 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 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
Landscapes
- Control Of Amplification And Gain Control (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9330781A JPS57207410A (en) | 1981-06-16 | 1981-06-16 | Automatic sound volume correcting device |
US06/387,895 US4476571A (en) | 1981-06-15 | 1982-06-14 | Automatic sound volume control device |
DE19823222495 DE3222495A1 (de) | 1981-06-15 | 1982-06-15 | Selbsttaetige lautstaerke-regelvorrichtung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9330781A JPS57207410A (en) | 1981-06-16 | 1981-06-16 | Automatic sound volume correcting device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57207410A true JPS57207410A (en) | 1982-12-20 |
JPH0334244B2 JPH0334244B2 (ja) | 1991-05-22 |
Family
ID=14078670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9330781A Granted JPS57207410A (en) | 1981-06-15 | 1981-06-16 | Automatic sound volume correcting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57207410A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6529605B1 (en) | 2000-04-14 | 2003-03-04 | Harman International Industries, Incorporated | Method and apparatus for dynamic sound optimization |
JP2006148541A (ja) * | 2004-11-19 | 2006-06-08 | Denso Corp | ナビゲーション装置およびプログラム |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4917950U (ja) * | 1972-05-26 | 1974-02-15 | ||
JPS5179537A (en) * | 1975-01-07 | 1976-07-10 | Mizukami Shizuya | Terebijonnadoni mochiiru jidoonryochoseisochi |
-
1981
- 1981-06-16 JP JP9330781A patent/JPS57207410A/ja active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4917950U (ja) * | 1972-05-26 | 1974-02-15 | ||
JPS5179537A (en) * | 1975-01-07 | 1976-07-10 | Mizukami Shizuya | Terebijonnadoni mochiiru jidoonryochoseisochi |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6529605B1 (en) | 2000-04-14 | 2003-03-04 | Harman International Industries, Incorporated | Method and apparatus for dynamic sound optimization |
JP2006148541A (ja) * | 2004-11-19 | 2006-06-08 | Denso Corp | ナビゲーション装置およびプログラム |
Also Published As
Publication number | Publication date |
---|---|
JPH0334244B2 (ja) | 1991-05-22 |
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