JPS57207410A - Automatic sound volume correcting device - Google Patents

Automatic sound volume correcting device

Info

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
Application number
JP9330781A
Other languages
English (en)
Other versions
JPH0334244B2 (ja
Inventor
Akio Tokuge
Masayuki Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Corp
Pioneer Electronic Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP9330781A priority Critical patent/JPS57207410A/ja
Priority to US06/387,895 priority patent/US4476571A/en
Priority to DE19823222495 priority patent/DE3222495A1/de
Publication of JPS57207410A publication Critical patent/JPS57207410A/ja
Publication of JPH0334244B2 publication Critical patent/JPH0334244B2/ja
Granted legal-status Critical Current

Links

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)
JP9330781A 1981-06-15 1981-06-16 Automatic sound volume correcting device Granted JPS57207410A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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