GB1248857A - An audio-frequency dynamic sound range compressor - Google Patents

An audio-frequency dynamic sound range compressor

Info

Publication number
GB1248857A
GB1248857A GB53894/69A GB5389469A GB1248857A GB 1248857 A GB1248857 A GB 1248857A GB 53894/69 A GB53894/69 A GB 53894/69A GB 5389469 A GB5389469 A GB 5389469A GB 1248857 A GB1248857 A GB 1248857A
Authority
GB
United Kingdom
Prior art keywords
compressor
impedance element
audio
sound range
frequency dynamic
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
Application number
GB53894/69A
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.)
AKG Acoustics GmbH
Original Assignee
AKG Akustische und Kino Geraete GmbH
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 AKG Akustische und Kino Geraete GmbH filed Critical AKG Akustische und Kino Geraete GmbH
Publication of GB1248857A publication Critical patent/GB1248857A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/06—Volume compression or expansion in amplifiers having semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
    • H03G7/004—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers using continuously variable impedance devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)

Abstract

1,248,857. Volume compressors. AKUSTISCHE U. KINO GERATE G.m.b.H. 3 Nov., 1969 [4 Nov., 1968], No. 53894/69. Heading H4R. Volume compressor circuit includes a differential transformer U 2 with the signal voltage applied to one half of the primary 1 at a fixed level and to the other half of the primary 2 via an impedance element R s , whose value is controlled according to the signal level applied to the compressor. The impedance element may be a bridge network of diodes, as shown in Fig. 1, or of transistors, or may be a single diode or the emitter collector impedance of a transistor, Figs. 3a, 3b or 3c (not shown). The control voltage for the impedance element is derived from the input via an amplifier V and rectifier circuit G. The compressor may be built into the microphone housing.
GB53894/69A 1968-11-04 1969-11-03 An audio-frequency dynamic sound range compressor Expired GB1248857A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT1069968A AT289202B (en) 1968-11-04 1968-11-04 Dynamic compressor

Publications (1)

Publication Number Publication Date
GB1248857A true GB1248857A (en) 1971-10-06

Family

ID=3624087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53894/69A Expired GB1248857A (en) 1968-11-04 1969-11-03 An audio-frequency dynamic sound range compressor

Country Status (4)

Country Link
US (1) US3624491A (en)
AT (1) AT289202B (en)
DE (1) DE1953300A1 (en)
GB (1) GB1248857A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932802A (en) * 1974-07-12 1976-01-13 Cornwell Lionel B Controlled power transferring device and method utilizing a reactance controlled by development of opposing magnetic fluxes
US3938030A (en) * 1974-07-18 1976-02-10 Cornwell Lionel B Controllable power transferring device utilizing a short-circuited controlled reactance
US3965436A (en) * 1975-06-20 1976-06-22 General Electric Company Compressor and expander circuits for compander system
US3991272A (en) * 1975-09-08 1976-11-09 Tarr Lloyd A Audio AGC amplifier
US5039960A (en) * 1990-01-17 1991-08-13 Hughes Aircraft Company Wideband feedforward gallium arsenide AGC circuit
DE102010012269B4 (en) * 2010-03-22 2012-10-04 Austriamicrosystems Ag Differential amplifier and method for operating a differential amplifier

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2341336A (en) * 1942-03-10 1944-02-08 Rca Corp Compressor and variable equalizer system
US3439280A (en) * 1965-09-23 1969-04-15 Siemens Ag Circuit arrangement for the regulation of dynamics of electrical signals

Also Published As

Publication number Publication date
AT289202B (en) 1971-04-13
DE1953300A1 (en) 1970-05-27
US3624491A (en) 1971-11-30

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