JPH0370406B2 - - Google Patents

Info

Publication number
JPH0370406B2
JPH0370406B2 JP58200292A JP20029283A JPH0370406B2 JP H0370406 B2 JPH0370406 B2 JP H0370406B2 JP 58200292 A JP58200292 A JP 58200292A JP 20029283 A JP20029283 A JP 20029283A JP H0370406 B2 JPH0370406 B2 JP H0370406B2
Authority
JP
Japan
Prior art keywords
loudspeaker
noise
signal
level
voice coil
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.)
Expired - Lifetime
Application number
JP58200292A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6091705A (ja
Inventor
Akihisa Kawamura
Kazuhide Sato
Yoko Enokida
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP20029283A priority Critical patent/JPS6091705A/ja
Publication of JPS6091705A publication Critical patent/JPS6091705A/ja
Publication of JPH0370406B2 publication Critical patent/JPH0370406B2/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

  • Circuit For Audible Band Transducer (AREA)
  • Control Of Amplification And Gain Control (AREA)
JP20029283A 1983-10-26 1983-10-26 拡声装置 Granted JPS6091705A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20029283A JPS6091705A (ja) 1983-10-26 1983-10-26 拡声装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20029283A JPS6091705A (ja) 1983-10-26 1983-10-26 拡声装置

Publications (2)

Publication Number Publication Date
JPS6091705A JPS6091705A (ja) 1985-05-23
JPH0370406B2 true JPH0370406B2 (ko) 1991-11-07

Family

ID=16421886

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20029283A Granted JPS6091705A (ja) 1983-10-26 1983-10-26 拡声装置

Country Status (1)

Country Link
JP (1) JPS6091705A (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2764179B2 (ja) * 1989-03-03 1998-06-11 日本電信電話株式会社 音場制御法
US6646504B2 (en) * 2001-08-17 2003-11-11 Harris Corporation Broadband amplifier system having improved linearity and minimum loss
JP5266917B2 (ja) * 2008-07-09 2013-08-21 国立大学法人九州工業大学 アクティブ消音装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4984314A (ko) * 1972-12-18 1974-08-13

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4984314A (ko) * 1972-12-18 1974-08-13

Also Published As

Publication number Publication date
JPS6091705A (ja) 1985-05-23

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