JPS5593311A - Loudness circuit unit - Google Patents

Loudness circuit unit

Info

Publication number
JPS5593311A
JPS5593311A JP151679A JP151679A JPS5593311A JP S5593311 A JPS5593311 A JP S5593311A JP 151679 A JP151679 A JP 151679A JP 151679 A JP151679 A JP 151679A JP S5593311 A JPS5593311 A JP S5593311A
Authority
JP
Japan
Prior art keywords
fed
signal
amplifier
voltage control
circuit unit
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
JP151679A
Other languages
Japanese (ja)
Inventor
Nobuya Morita
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.)
Onkyo Corp
Original Assignee
Onkyo 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 Onkyo Corp filed Critical Onkyo Corp
Priority to JP151679A priority Critical patent/JPS5593311A/en
Publication of JPS5593311A publication Critical patent/JPS5593311A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control

Landscapes

  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

PURPOSE:To automatically perform loudness correction depending on the sound level. CONSTITUTION:The input signal is divided into three; a is fed to the adder 1 as it is as the main signal, b is fed to the voltage control amplifier 4 via the low pass filter 2 and amplifier 3 as the sub-signal, and c is the DC voltage obtained according to the input signal through the logarithmic amplifier 5, detector 6 and smoothing low pass filter 7 as the control signal and is fed to the control terminal of the voltage control amplifier 4. The output of the voltage control amplifier 4 is fed to the adder 1 and the overall loudness characteristics as shown in Figure can be obtained according to the signal level.
JP151679A 1979-01-09 1979-01-09 Loudness circuit unit Pending JPS5593311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP151679A JPS5593311A (en) 1979-01-09 1979-01-09 Loudness circuit unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP151679A JPS5593311A (en) 1979-01-09 1979-01-09 Loudness circuit unit

Publications (1)

Publication Number Publication Date
JPS5593311A true JPS5593311A (en) 1980-07-15

Family

ID=11503646

Family Applications (1)

Application Number Title Priority Date Filing Date
JP151679A Pending JPS5593311A (en) 1979-01-09 1979-01-09 Loudness circuit unit

Country Status (1)

Country Link
JP (1) JPS5593311A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6365389U (en) * 1986-10-20 1988-04-30
JPS63147024U (en) * 1987-03-19 1988-09-28
JPH0417408A (en) * 1990-05-11 1992-01-22 Matsushita Electric Ind Co Ltd Double-bass sound reproducing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6365389U (en) * 1986-10-20 1988-04-30
JPH0617436Y2 (en) * 1986-10-20 1994-05-02 オンキヨー株式会社 Audio playback device
JPS63147024U (en) * 1987-03-19 1988-09-28
JPH0417408A (en) * 1990-05-11 1992-01-22 Matsushita Electric Ind Co Ltd Double-bass sound reproducing device

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