DE69620664T2 - Bandbreitenkompressor für niedrige Eingangssignale und Steuerschaltung für Verstärker - Google Patents

Bandbreitenkompressor für niedrige Eingangssignale und Steuerschaltung für Verstärker

Info

Publication number
DE69620664T2
DE69620664T2 DE69620664T DE69620664T DE69620664T2 DE 69620664 T2 DE69620664 T2 DE 69620664T2 DE 69620664 T DE69620664 T DE 69620664T DE 69620664 T DE69620664 T DE 69620664T DE 69620664 T2 DE69620664 T2 DE 69620664T2
Authority
DE
Germany
Prior art keywords
amplifiers
control circuit
input signals
low input
bandwidth compressor
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
DE69620664T
Other languages
English (en)
Other versions
DE69620664D1 (de
Inventor
Paul R Gagon
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.)
BBE Sound Inc
Original Assignee
BBE Sound Inc
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 BBE Sound Inc filed Critical BBE Sound Inc
Application granted granted Critical
Publication of DE69620664D1 publication Critical patent/DE69620664D1/de
Publication of DE69620664T2 publication Critical patent/DE69620664T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/18—Automatic control in untuned amplifiers
    • H03G5/22—Automatic control in untuned amplifiers having semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/26—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifying stages as well as in frequency-selective amplifying stages
    • H03G9/30—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifying stages as well as in frequency-selective amplifying stages all amplifying stages having semiconductor devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
DE69620664T 1995-01-24 1996-01-09 Bandbreitenkompressor für niedrige Eingangssignale und Steuerschaltung für Verstärker Expired - Lifetime DE69620664T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/377,903 US5510752A (en) 1995-01-24 1995-01-24 Low input signal bandwidth compressor and amplifier control circuit

Publications (2)

Publication Number Publication Date
DE69620664D1 DE69620664D1 (de) 2002-05-23
DE69620664T2 true DE69620664T2 (de) 2002-11-28

Family

ID=23490986

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69620664T Expired - Lifetime DE69620664T2 (de) 1995-01-24 1996-01-09 Bandbreitenkompressor für niedrige Eingangssignale und Steuerschaltung für Verstärker

Country Status (6)

Country Link
US (1) US5510752A (de)
EP (1) EP0724329B1 (de)
JP (1) JPH08321735A (de)
KR (1) KR100367775B1 (de)
CN (1) CN1066872C (de)
DE (1) DE69620664T2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5736897A (en) * 1995-01-24 1998-04-07 Bbe Sound Inc. Low input signal bandwidth compressor and amplifier control circuit with a state variable pre-amplifier
DE19637582A1 (de) * 1996-09-14 1998-03-19 Daimler Benz Ag Verstärkeranordnung hohen Wirkungsgrades
US6542612B1 (en) * 1997-10-03 2003-04-01 Alan W. Needham Companding amplifier with sidechannel gain control
US6947567B1 (en) * 1999-11-12 2005-09-20 Bbe Sound Inc. Audio boost circuit
TW527786B (en) * 2001-10-24 2003-04-11 Wistron Corp Filtering device with bandwidth adjustment capability
US7388959B2 (en) * 2003-08-22 2008-06-17 Bbe Sound, Inc. Harmonic generator and pre-amp
US20050069155A1 (en) * 2003-09-26 2005-03-31 Gagon Paul R. Audio pre-amp and mid-band compressor circuit
US20060139093A1 (en) 2004-12-23 2006-06-29 Bbe Sound Inc. Three-channel state-variable compressor circuit

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789143A (en) * 1971-03-29 1974-01-29 D Blackmer Compander with control signal logarithmically related to the instantaneous rms value of the input signal
US3714462A (en) * 1971-06-14 1973-01-30 D Blackmer Multiplier circuits
US4097767A (en) * 1977-01-17 1978-06-27 Dbx, Incorporated Operational rectifier
AT347794B (de) * 1977-02-18 1979-01-10 Eumig Einrichung zur unterdrueckung von stoersignalen
US4327331A (en) * 1979-11-07 1982-04-27 Pioneer Electronic Corporation Audio amplifier device
JPS56140712A (en) * 1980-03-17 1981-11-04 Dbx Gain control circuit
US4398158A (en) * 1980-11-24 1983-08-09 Micmix Audio Products, Inc. Dynamic range expander
US4409500A (en) * 1981-03-26 1983-10-11 Dbx, Inc. Operational rectifier and bias generator
US4482866A (en) * 1982-02-26 1984-11-13 Barcus-Berry, Inc. Reference load amplifier correction system
US4638258A (en) * 1982-02-26 1987-01-20 Barcus-Berry Electronics, Inc. Reference load amplifier correction system
US4484345A (en) * 1983-02-28 1984-11-20 Stearns William P Prosthetic device for optimizing speech understanding through adjustable frequency spectrum responses
US4545258A (en) * 1983-07-05 1985-10-08 Rosemount Inc. Circuit with adjustable amplitude and rolloff frequency characteristics
US4661851A (en) * 1984-03-27 1987-04-28 Rca Corporation Apparatus for reducing the effect of noise interference in audio companding system
US5165017A (en) * 1986-12-11 1992-11-17 Smith & Nephew Richards, Inc. Automatic gain control circuit in a feed forward configuration
ES2082056T3 (es) * 1991-07-31 1996-03-16 Siemens Ag Filtro con pendiente de los flancos ajustable.
US5303308A (en) * 1992-07-07 1994-04-12 Gn Netcom A/S Audio frequency signal compressing system

Also Published As

Publication number Publication date
CN1066872C (zh) 2001-06-06
EP0724329B1 (de) 2002-04-17
CN1135682A (zh) 1996-11-13
KR960030188A (ko) 1996-08-17
US5510752A (en) 1996-04-23
KR100367775B1 (ko) 2003-03-10
EP0724329A1 (de) 1996-07-31
JPH08321735A (ja) 1996-12-03
DE69620664D1 (de) 2002-05-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition