NL165347B - DYNAMIC COMPRESSION CIRCUIT FOR AUDIO-FREQUENT SIGNALS. - Google Patents

DYNAMIC COMPRESSION CIRCUIT FOR AUDIO-FREQUENT SIGNALS.

Info

Publication number
NL165347B
NL165347B NL7510729A NL7510729A NL165347B NL 165347 B NL165347 B NL 165347B NL 7510729 A NL7510729 A NL 7510729A NL 7510729 A NL7510729 A NL 7510729A NL 165347 B NL165347 B NL 165347B
Authority
NL
Netherlands
Prior art keywords
audio
compression circuit
dynamic compression
sept
output
Prior art date
Application number
NL7510729A
Other languages
Dutch (nl)
Other versions
NL165347C (en
NL7510729A (en
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of NL7510729A publication Critical patent/NL7510729A/en
Publication of NL165347B publication Critical patent/NL165347B/en
Application granted granted Critical
Publication of NL165347C publication Critical patent/NL165347C/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0082—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using bipolar transistor-type devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
    • H03G11/04—Limiting level dependent on strength of signal; Limiting level dependent on strength of carrier on which signal is modulated
    • 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
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
    • H03G3/3015—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable using diodes or transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

1517948 Limiters SONY CORP 9 Sept 1975 [12 Sept 1974] 37071/75 Heading H4R In a limiter having a signal path 1-2 with a series or shunt impedance Q1 controlled by a current source Q2, Q4, Q5 responsive to a voltage obtained by rectification Q3 of the signal in the path 1-2, a diode D1 forward-connected between the output of the current source and the output of the rectifier Q3 forms part of a bypass selectively operable S1, S2 to prevent (leakage) control current reaching the impedance Ql and thereby causing distortion.
NL7510729A 1974-09-12 1975-09-11 DYNAMIC COMPRESSION CIRCUIT FOR AUDIO-FREQUENT SIGNALS. NL165347C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11005674U JPS5515388Y2 (en) 1974-09-12 1974-09-12

Publications (3)

Publication Number Publication Date
NL7510729A NL7510729A (en) 1976-03-16
NL165347B true NL165347B (en) 1980-10-15
NL165347C NL165347C (en) 1981-03-16

Family

ID=14525958

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7510729A NL165347C (en) 1974-09-12 1975-09-11 DYNAMIC COMPRESSION CIRCUIT FOR AUDIO-FREQUENT SIGNALS.

Country Status (8)

Country Link
JP (1) JPS5515388Y2 (en)
AT (1) AT349067B (en)
CA (1) CA1054711A (en)
DE (1) DE2537276C3 (en)
FR (1) FR2285016A1 (en)
GB (1) GB1517948A (en)
NL (1) NL165347C (en)
SE (1) SE417148B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52153651A (en) * 1976-06-17 1977-12-20 Sony Corp Gain changing circuit
JPS5531368A (en) * 1978-08-29 1980-03-05 Fujitsu Ltd Transmission amount control circuit
DE3134600C2 (en) * 1981-09-01 1986-09-18 ANT Nachrichtentechnik GmbH, 7150 Backnang Control circuit for a control amplifier
DE3308824A1 (en) * 1983-03-12 1984-09-13 Eugen Beyer, Elektrotechnische Fabrik GmbH & Co, 7100 Heilbronn Method for amplitude limitation, and a controlled limiter circuit
JPS59171207A (en) * 1984-03-09 1984-09-27 Rohm Co Ltd Automatic level adjusting circuit
US10658997B2 (en) * 2018-08-24 2020-05-19 Rgb Systems, Inc. Energy efficient clip limiting voltage controlled amplifier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4881450A (en) * 1972-02-01 1973-10-31
JPS5549451B2 (en) * 1972-08-30 1980-12-12

Also Published As

Publication number Publication date
DE2537276A1 (en) 1976-04-01
GB1517948A (en) 1978-07-19
JPS5145348U (en) 1976-04-03
JPS5515388Y2 (en) 1980-04-09
CA1054711A (en) 1979-05-15
FR2285016B1 (en) 1979-06-15
NL165347C (en) 1981-03-16
NL7510729A (en) 1976-03-16
AU8415975A (en) 1977-02-24
ATA695975A (en) 1978-08-15
SE7510219L (en) 1976-03-15
DE2537276B2 (en) 1977-12-22
DE2537276C3 (en) 1978-08-24
AT349067B (en) 1979-03-26
SE417148B (en) 1981-02-23
FR2285016A1 (en) 1976-04-09

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee