HK68784A - Apparatus for compressing or expanding the dynamic range of an audio frequency signal - Google Patents
Apparatus for compressing or expanding the dynamic range of an audio frequency signalInfo
- Publication number
- HK68784A HK68784A HK687/84A HK68784A HK68784A HK 68784 A HK68784 A HK 68784A HK 687/84 A HK687/84 A HK 687/84A HK 68784 A HK68784 A HK 68784A HK 68784 A HK68784 A HK 68784A
- Authority
- HK
- Hong Kong
- Prior art keywords
- compressing
- expanding
- frequency signal
- dynamic range
- audio frequency
- Prior art date
Links
Classifications
-
- 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
-
- 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
- H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
- H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782812431 DE2812431A1 (de) | 1978-03-22 | 1978-03-22 | Verstaerker mit veraenderbarem uebertragungsmass |
Publications (1)
Publication Number | Publication Date |
---|---|
HK68784A true HK68784A (en) | 1984-09-14 |
Family
ID=6035118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK687/84A HK68784A (en) | 1978-03-22 | 1984-09-06 | Apparatus for compressing or expanding the dynamic range of an audio frequency signal |
Country Status (9)
Country | Link |
---|---|
US (1) | US4270103A (xx) |
JP (1) | JPS54128248A (xx) |
AU (1) | AU518353B2 (xx) |
DE (1) | DE2812431A1 (xx) |
GB (1) | GB2017458B (xx) |
HK (1) | HK68784A (xx) |
IT (1) | IT1111123B (xx) |
MY (1) | MY8500624A (xx) |
SG (1) | SG22484G (xx) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55156412A (en) * | 1979-05-24 | 1980-12-05 | Sony Corp | Gain control circuit |
DE2941961A1 (de) * | 1979-10-17 | 1981-04-30 | Krautkrämer GmbH, 5000 Köln | Verfahren zur signalspannungsabhaengigen veraenderung des verstaerkungsfaktors |
DE3047766A1 (de) * | 1980-12-18 | 1982-07-15 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltung mit veraenderbarem uebertragungsmass |
EP0084323B1 (de) * | 1982-01-15 | 1986-07-30 | TELEFUNKEN Fernseh und Rundfunk GmbH | Schaltungsanordnung zur Erzeugung einer von einer Wechselspannung abhängigen Steuerspannung |
SG28380G (en) * | 1986-04-03 | 1995-09-01 | Motorola Inc | FM receiver with noise suppression during rayleigh faded received signals |
US5226178A (en) * | 1989-11-01 | 1993-07-06 | Motorola, Inc. | Compatible noise reduction system |
US8391153B2 (en) * | 2006-02-17 | 2013-03-05 | Cisco Technology, Inc. | Decoupling radio resource management from an access gateway |
CN101496387B (zh) * | 2006-03-06 | 2012-09-05 | 思科技术公司 | 用于移动无线网络中的接入认证的系统和方法 |
US7675704B2 (en) * | 2006-03-09 | 2010-03-09 | Texas Instruments Incorporated | Magnetoresistive head preamplifier circuit with programmable input impedance |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA955532A (en) * | 1971-04-16 | 1974-10-01 | Masao Tomita | Automatic noise reduction system |
NO142768C (no) * | 1974-01-26 | 1980-10-08 | Licentia Gmbh | Kopling for automatisk dynamikk-kompresjon eller -ekspansjon |
DE2619192A1 (de) * | 1976-04-30 | 1977-11-17 | Licentia Gmbh | Schaltung zur automatischen dynamik-kompression oder -expansion |
DE2707609A1 (de) * | 1977-02-22 | 1978-08-24 | Licentia Gmbh | In seiner verstaerkung steuerbarer wechselspannungsverstaerker |
-
1978
- 1978-03-22 DE DE19782812431 patent/DE2812431A1/de not_active Ceased
-
1979
- 1979-03-01 IT IT20670/79A patent/IT1111123B/it active
- 1979-03-06 JP JP2518279A patent/JPS54128248A/ja active Pending
- 1979-03-07 GB GB7908127A patent/GB2017458B/en not_active Expired
- 1979-03-15 AU AU45146/79A patent/AU518353B2/en not_active Ceased
- 1979-03-22 US US06/023,006 patent/US4270103A/en not_active Expired - Lifetime
-
1984
- 1984-03-12 SG SG224/84A patent/SG22484G/en unknown
- 1984-09-06 HK HK687/84A patent/HK68784A/xx unknown
-
1985
- 1985-12-30 MY MY624/85A patent/MY8500624A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
AU4514679A (en) | 1979-09-27 |
AU518353B2 (en) | 1981-09-24 |
US4270103A (en) | 1981-05-26 |
IT7920670A0 (it) | 1979-03-01 |
GB2017458A (en) | 1979-10-03 |
DE2812431A1 (de) | 1979-09-27 |
JPS54128248A (en) | 1979-10-04 |
SG22484G (en) | 1985-01-04 |
GB2017458B (en) | 1982-04-07 |
MY8500624A (en) | 1985-12-31 |
IT1111123B (it) | 1986-01-13 |
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