DE69620664T2 - Bandbreitenkompressor für niedrige Eingangssignale und Steuerschaltung für Verstärker - Google Patents
Bandbreitenkompressor für niedrige Eingangssignale und Steuerschaltung für VerstärkerInfo
- 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
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)
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)
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)
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 |
EP0525242B1 (de) * | 1991-07-31 | 1996-01-17 | Siemens Aktiengesellschaft | Filter mit einstellbarer Flankensteilheit |
US5303308A (en) * | 1992-07-07 | 1994-04-12 | Gn Netcom A/S | Audio frequency signal compressing system |
-
1995
- 1995-01-24 US US08/377,903 patent/US5510752A/en not_active Expired - Lifetime
-
1996
- 1996-01-09 DE DE69620664T patent/DE69620664T2/de not_active Expired - Lifetime
- 1996-01-09 EP EP96100225A patent/EP0724329B1/de not_active Expired - Lifetime
- 1996-01-24 KR KR1019960001535A patent/KR100367775B1/ko not_active IP Right Cessation
- 1996-01-24 CN CN96101915A patent/CN1066872C/zh not_active Expired - Lifetime
- 1996-01-24 JP JP1013996A patent/JPH08321735A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US5510752A (en) | 1996-04-23 |
JPH08321735A (ja) | 1996-12-03 |
DE69620664D1 (de) | 2002-05-23 |
KR100367775B1 (ko) | 2003-03-10 |
EP0724329B1 (de) | 2002-04-17 |
EP0724329A1 (de) | 1996-07-31 |
KR960030188A (ko) | 1996-08-17 |
CN1066872C (zh) | 2001-06-06 |
CN1135682A (zh) | 1996-11-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |