JPS5625824B2 - - Google Patents
Info
- Publication number
- JPS5625824B2 JPS5625824B2 JP7698572A JP7698572A JPS5625824B2 JP S5625824 B2 JPS5625824 B2 JP S5625824B2 JP 7698572 A JP7698572 A JP 7698572A JP 7698572 A JP7698572 A JP 7698572A JP S5625824 B2 JPS5625824 B2 JP S5625824B2
- Authority
- JP
- Japan
- 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
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/62—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
- H04B1/64—Volume compression or expansion arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Television Signal Processing For Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16806971A | 1971-08-02 | 1971-08-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS4825424A JPS4825424A (de) | 1973-04-03 |
JPS5625824B2 true JPS5625824B2 (de) | 1981-06-15 |
Family
ID=22609984
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7698772A Expired JPS5737135B2 (de) | 1971-08-02 | 1972-08-02 | |
JP7698572A Expired JPS5625824B2 (de) | 1971-08-02 | 1972-08-02 | |
JP7698672A Expired JPS5737134B2 (de) | 1971-08-02 | 1972-08-02 | |
JP7698872A Expired JPS53888B2 (de) | 1971-08-02 | 1972-08-02 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7698772A Expired JPS5737135B2 (de) | 1971-08-02 | 1972-08-02 |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7698672A Expired JPS5737134B2 (de) | 1971-08-02 | 1972-08-02 | |
JP7698872A Expired JPS53888B2 (de) | 1971-08-02 | 1972-08-02 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3729693A (de) |
JP (4) | JPS5737135B2 (de) |
DE (4) | DE2237540C2 (de) |
GB (4) | GB1404334A (de) |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3972010A (en) * | 1968-01-10 | 1976-07-27 | Ray Milton Dolby | Compressors, expanders and noise reduction systems |
US3903485A (en) * | 1968-01-10 | 1975-09-02 | Ray Milton Dolby | Compressors, expanders and noise reduction systems |
GB1432763A (en) * | 1972-05-02 | 1976-04-22 | Dolby Laboratories Inc | Compressors expanders and noise reduction systems |
JPS572970B2 (de) * | 1973-09-10 | 1982-01-19 | ||
US4045731A (en) * | 1974-11-21 | 1977-08-30 | Takeda Riken Kogyo Kabushikikaisha | Filter having an automatically controlled variable cut-off frequency |
JPS51118718U (de) * | 1975-03-19 | 1976-09-27 | ||
US4155041A (en) | 1976-05-13 | 1979-05-15 | Burns Richard C | System for reducing noise transients |
GB1579138A (en) * | 1976-07-06 | 1980-11-12 | Sony Corp | Noise and cross-talk elimination in recording and reproducing video signals |
JPS5313860A (en) * | 1976-07-23 | 1978-02-07 | Pioneer Electronic Corp | Tone control device |
US4068139A (en) * | 1976-08-09 | 1978-01-10 | Fairchild Camera And Instrument Corporation | IC compatible variable shunt impedance for Dolby B system |
JPS5329007A (en) * | 1976-08-30 | 1978-03-17 | Victor Co Of Japan Ltd | Signal transmitter |
JPS5373020A (en) * | 1976-12-13 | 1978-06-29 | Victor Co Of Japan Ltd | Signal transmission device |
JPS53121506A (en) * | 1977-03-31 | 1978-10-24 | Pioneer Electronic Corp | Signal compressing and expanding device |
JPS5439516A (en) * | 1977-09-02 | 1979-03-27 | Sanyo Electric Co Ltd | Noise reduction unit |
GB2034138B (en) * | 1978-09-26 | 1983-03-23 | Pioneer Electronic Corp | Variable gain amplifier circuit |
JPS55121698U (de) * | 1979-02-21 | 1980-08-29 | ||
JPS55156431A (en) * | 1979-05-24 | 1980-12-05 | Sony Corp | Noise reduction system |
JPS55158715A (en) * | 1979-05-29 | 1980-12-10 | Sony Corp | Gain control circuit |
DE3102945A1 (de) * | 1980-05-19 | 1981-12-24 | Hitachi, Ltd., Tokyo | Umschaltbarer signalkompressor/signaldehner |
US4457014A (en) * | 1980-10-03 | 1984-06-26 | Metme Communications | Signal transfer and system utilizing transmission lines |
JPS57142013A (en) * | 1981-02-27 | 1982-09-02 | Sony Corp | Active equalizer |
GB2118408B (en) * | 1981-08-26 | 1985-06-19 | Eberhardt Alfred F | System for maximum efficiency transfer of modulated signals utilizing line systems |
JPS57117111A (en) * | 1981-11-20 | 1982-07-21 | Matsushita Electric Ind Co Ltd | Tape recorder |
JPS59500644A (ja) * | 1982-01-26 | 1984-04-12 | ブロイ、グラハム フイリップ | 変調エネルギ−を最大効率で伝送するためのシステム |
JPS58209234A (ja) * | 1982-05-29 | 1983-12-06 | Sony Corp | ノイズリダクシヨン回路 |
JPS5933113U (ja) * | 1982-08-23 | 1984-03-01 | 株式会社東芝 | テ−プレコ−ダの切換装置 |
JPS5995414U (ja) * | 1982-12-17 | 1984-06-28 | 株式会社日立製作所 | ノイズリダクシヨン回路付テ−プレコ−ダ− |
JPS6062639U (ja) * | 1983-10-05 | 1985-05-01 | カヤバ工業株式会社 | 油圧緩衝器の取付装置 |
US4747141A (en) * | 1983-10-24 | 1988-05-24 | Kahn Leonard R | AM stereo signal decoder |
JPH0725854B2 (ja) * | 1984-05-18 | 1995-03-22 | 帝国化学産業株式会社 | ポリアミド樹脂の水溶化方法 |
DE3543907A1 (de) * | 1985-12-12 | 1987-06-25 | Stefan Knauer | Einrichtung zur stoerunterdrueckung bei der uebertragung von niederfrequenzsignalen |
JPH0244113Y2 (de) * | 1987-03-26 | 1990-11-22 | ||
JPS6421833U (de) * | 1987-07-29 | 1989-02-03 | ||
EP0356885A3 (de) * | 1988-08-23 | 1991-05-15 | B.W.N. Wavepur Rights Company | Schaltung mit linear abstimmbarem Band und Frequenzausgleich |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH447890A (fr) * | 1965-07-09 | 1967-11-30 | Dowty Electrics Ltd | Indicateur commandé électriquement |
GB1120541A (en) * | 1965-08-11 | 1968-07-17 | Dolby Ray Milton | Improvements in noise reduction systems |
GB1253031A (de) * | 1968-01-10 | 1971-11-10 | ||
US3631365A (en) * | 1968-11-01 | 1971-12-28 | Dolby Laboratories Inc | Signal compressors and expanders |
-
1971
- 1971-08-02 US US00168069A patent/US3729693A/en not_active Expired - Lifetime
-
1972
- 1972-07-18 GB GB3364672A patent/GB1404334A/en not_active Expired
- 1972-07-18 GB GB3362472A patent/GB1404331A/en not_active Expired
- 1972-07-18 GB GB3364472A patent/GB1404332A/en not_active Expired
- 1972-07-18 GB GB3364572A patent/GB1404333A/en not_active Expired
- 1972-07-31 DE DE2237540A patent/DE2237540C2/de not_active Expired
- 1972-07-31 DE DE2237542A patent/DE2237542C2/de not_active Expired
- 1972-07-31 DE DE2237541A patent/DE2237541C2/de not_active Expired
- 1972-07-31 DE DE19722237543 patent/DE2237543B2/de not_active Ceased
- 1972-08-02 JP JP7698772A patent/JPS5737135B2/ja not_active Expired
- 1972-08-02 JP JP7698572A patent/JPS5625824B2/ja not_active Expired
- 1972-08-02 JP JP7698672A patent/JPS5737134B2/ja not_active Expired
- 1972-08-02 JP JP7698872A patent/JPS53888B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1404334A (en) | 1975-08-28 |
DE2237542C2 (de) | 1982-04-29 |
DE2237543A1 (de) | 1973-02-22 |
GB1404331A (en) | 1975-08-28 |
JPS4825427A (de) | 1973-04-03 |
DE2237541A1 (de) | 1973-02-22 |
DE2237540C2 (de) | 1982-07-15 |
JPS5737135B2 (de) | 1982-08-07 |
GB1404332A (en) | 1975-08-28 |
JPS53888B2 (de) | 1978-01-12 |
DE2237543B2 (de) | 1977-12-08 |
GB1404333A (en) | 1975-08-28 |
US3729693A (en) | 1973-04-24 |
JPS4825426A (de) | 1973-04-03 |
DE2237541C2 (de) | 1982-08-05 |
JPS5737134B2 (de) | 1982-08-07 |
JPS4825424A (de) | 1973-04-03 |
DE2237540A1 (de) | 1973-02-22 |
DE2237542A1 (de) | 1973-02-22 |
JPS4825425A (de) | 1973-04-03 |