JPS5650607A - Sound volume/quality control device - Google Patents

Sound volume/quality control device

Info

Publication number
JPS5650607A
JPS5650607A JP12664579A JP12664579A JPS5650607A JP S5650607 A JPS5650607 A JP S5650607A JP 12664579 A JP12664579 A JP 12664579A JP 12664579 A JP12664579 A JP 12664579A JP S5650607 A JPS5650607 A JP S5650607A
Authority
JP
Japan
Prior art keywords
output
circuit
level
sound
volume
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
Application number
JP12664579A
Other languages
Japanese (ja)
Inventor
Takashi Taniyama
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.)
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion 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 Clarion Co Ltd filed Critical Clarion Co Ltd
Priority to JP12664579A priority Critical patent/JPS5650607A/en
Publication of JPS5650607A publication Critical patent/JPS5650607A/en
Pending 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)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To prevent the lowering of the articulation, by varying both the sound volume and the sound quality according to the level of the ambient noise and giving a hearing sense correction during the no noise and a low-level output. CONSTITUTION:The output of the microphone 8 is applied to the substractor circuit 14 according to the ambient noise N and the signal component S. At the same time, the output of the aural amplifier 3 which gives the component S to the speaker 4 is also applied to the circuit 14. The output of the circuit 14 is integrated 16 in correspondence to the component N and then supplied to the adder 5. Also the signal N' of the figure I is applied to one input terminal of the level inverting circuit 15, and the output of the circuit 15 is integrated 17. And the signal S' of the figure II is applied to one input terminal of the adders 6 and 7 respectively. The other input terminals of the addres 5-7 are connected to the manual volume VM plus the low and high sound adjustors BM and TM, and the output side is connected to the soun volume/quality control circuit 2. In such way, both the sound volume and the sound quality can be varied in accordance with the level of the ambient noise, and a correction is given to the heating sense during the no noise and a loe-level output. Thus the lowering of articulation can be prevented.
JP12664579A 1979-10-01 1979-10-01 Sound volume/quality control device Pending JPS5650607A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12664579A JPS5650607A (en) 1979-10-01 1979-10-01 Sound volume/quality control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12664579A JPS5650607A (en) 1979-10-01 1979-10-01 Sound volume/quality control device

Publications (1)

Publication Number Publication Date
JPS5650607A true JPS5650607A (en) 1981-05-07

Family

ID=14940322

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12664579A Pending JPS5650607A (en) 1979-10-01 1979-10-01 Sound volume/quality control device

Country Status (1)

Country Link
JP (1) JPS5650607A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606333U (en) * 1983-06-24 1985-01-17 富士通テン株式会社 Automotive automatic volume and sound quality control device
EP0163545A2 (en) * 1984-05-31 1985-12-04 Pioneer Electronic Corporation Automatic gain and frequency characteristic control unit in audio device
JPS61116423U (en) * 1984-12-28 1986-07-23

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606333U (en) * 1983-06-24 1985-01-17 富士通テン株式会社 Automotive automatic volume and sound quality control device
EP0163545A2 (en) * 1984-05-31 1985-12-04 Pioneer Electronic Corporation Automatic gain and frequency characteristic control unit in audio device
JPS61116423U (en) * 1984-12-28 1986-07-23
JPH054335Y2 (en) * 1984-12-28 1993-02-03

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