DE1487276C3 - Baustein für eine Schaltungsanordnung zur Beeinflussung der Dynamik von Audiosignalen durch Kompression bzw. Expansion zur Störgeräuschvermittlung - Google Patents
Baustein für eine Schaltungsanordnung zur Beeinflussung der Dynamik von Audiosignalen durch Kompression bzw. Expansion zur StörgeräuschvermittlungInfo
- Publication number
- DE1487276C3 DE1487276C3 DE19661487276 DE1487276A DE1487276C3 DE 1487276 C3 DE1487276 C3 DE 1487276C3 DE 19661487276 DE19661487276 DE 19661487276 DE 1487276 A DE1487276 A DE 1487276A DE 1487276 C3 DE1487276 C3 DE 1487276C3
- Authority
- DE
- Germany
- Prior art keywords
- circuit
- signal
- expansion
- compression
- module
- 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
Links
- 238000007906 compression Methods 0.000 title claims description 36
- 230000006835 compression Effects 0.000 title claims description 35
- 230000005236 sound signal Effects 0.000 title claims description 18
- 239000003990 capacitor Substances 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000000670 limiting effect Effects 0.000 claims description 10
- 238000009499 grossing Methods 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims 1
- 230000000996 additive effect Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 230000001629 suppression Effects 0.000 description 16
- 230000000295 complement effect Effects 0.000 description 9
- 230000004044 response Effects 0.000 description 9
- 230000003321 amplification Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000003199 nucleic acid amplification method Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
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- 230000008901 benefit Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude
- H03G11/002—Limiting amplitude; Limiting rate of change of amplitude without controlling loop
-
- 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
- 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
- H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
- H03G9/18—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for tone control and volume expansion or compression
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3439465A GB1120541A (en) | 1965-08-11 | 1965-08-11 | Improvements in noise reduction systems |
| GB4313665 | 1965-10-11 | ||
| GB236866 | 1966-01-18 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE1487276A1 DE1487276A1 (de) | 1969-03-20 |
| DE1487276B2 DE1487276B2 (de) | 1975-02-20 |
| DE1487276C3 true DE1487276C3 (de) | 1982-01-07 |
Family
ID=27254067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19661487276 Expired DE1487276C3 (de) | 1965-08-11 | 1966-08-10 | Baustein für eine Schaltungsanordnung zur Beeinflussung der Dynamik von Audiosignalen durch Kompression bzw. Expansion zur Störgeräuschvermittlung |
Country Status (6)
| Country | Link |
|---|---|
| JP (4) | JPS4841044B1 (en:Method) |
| BE (1) | BE712376A (en:Method) |
| CH (1) | CH467560A (en:Method) |
| DE (1) | DE1487276C3 (en:Method) |
| GB (1) | GB1120541A (en:Method) |
| NL (1) | NL147297B (en:Method) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3206449A1 (de) * | 1981-02-23 | 1982-10-14 | Hitachi, Ltd., Tokyo | Verfahren und vorrichtung zur aufnahme und wiedergabe von audiosignalen |
| DE3323751C1 (de) * | 1983-07-01 | 1984-11-22 | Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover | System zur UEbertragung eines frequenzmodulierten Tontraegers |
| DE3939478A1 (de) * | 1989-02-03 | 1990-08-09 | Pioneer Electronic Corp | Vorrichtung zur verminderung des rauschens in einem fm-stereotuner |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1338227A (en) * | 1970-01-23 | 1973-11-21 | Dalby Lab Inc | Limiters for noise reduction systems |
| GB1390341A (en) * | 1971-03-12 | 1975-04-09 | Dolby Laboratories Inc | Signal compressors and expanders |
| NL163388C (nl) * | 1971-05-04 | 1980-08-15 | Philips Nv | Ruisonderdrukkingsschakeling. |
| US3729693A (en) * | 1971-08-02 | 1973-04-24 | R Dolby | Compressor/expander switching methods and apparatus |
| GB1438711A (en) * | 1973-01-23 | 1976-06-09 | Dolby Laboratories Inc | Calibration oscillators for noise reduction systems |
| CA1000617A (en) * | 1973-05-17 | 1976-11-30 | Ray M. Dolby | Compressors, expanders and noise reduction systems |
| DE2530144C3 (de) * | 1975-07-05 | 1981-11-19 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verstärker mit veränderbarem Übertragungsmaß |
| DE2542745C2 (de) * | 1975-09-25 | 1983-06-09 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Verstärker mit veränderbarem Übertragungsmaß, insbesondere für ein Kompander-System |
| DE2655325C2 (de) * | 1976-12-07 | 1984-01-26 | Saba Gmbh, 7730 Villingen-Schwenningen | Magnetbandgerät mit einer im Wiedergabebetrieb wirksamen Rauschunterdrückungs-Schaltung |
| GB2002204B (en) * | 1977-08-06 | 1982-01-27 | Licentia Gmbh | Dynamic compression or expansion circuits |
| JPS5439516A (en) * | 1977-09-02 | 1979-03-27 | Sanyo Electric Co Ltd | Noise reduction unit |
| JPS5545112A (en) | 1978-09-22 | 1980-03-29 | Sony Corp | Signal transmitter |
| JPS55156431A (en) * | 1979-05-24 | 1980-12-05 | Sony Corp | Noise reduction system |
| CA1184506A (en) * | 1980-04-21 | 1985-03-26 | Akira Komatsu | Method and system for discriminating human voice signal |
| US4540946A (en) * | 1980-06-06 | 1985-09-10 | National Research Development Corp. | Variable characteristic filters |
| DE3029441A1 (de) * | 1980-08-02 | 1982-03-04 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Signaluebertragungsschaltung mit steuerbarem uebertragungsmass |
| JPS5744338A (en) | 1980-08-29 | 1982-03-12 | Victor Co Of Japan Ltd | Noise reduction device |
| FR2490856B1 (fr) * | 1980-09-22 | 1985-09-27 | Elison Sarl | Appareil pour la reduction du bruit de fond du type a analyse spectrale en temps reel |
| JPS5769891A (en) * | 1980-10-17 | 1982-04-28 | Tokyo Shibaura Electric Co | Washing machine doubling as hydroextracting |
| JPS57138009A (en) * | 1981-02-20 | 1982-08-26 | Hitachi Ltd | Magnetic recorder and reproducer |
| JPS5866064A (ja) * | 1981-10-15 | 1983-04-20 | Toshiba Corp | レベル検出回路 |
| GB2111355B (en) * | 1981-12-01 | 1985-02-13 | Ray Milton Dolby | Improvements in circuit arrangements for modifying dynamic range |
| DE3305938A1 (de) * | 1983-02-21 | 1984-08-23 | Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover | Schaltungsanordnung zur erzeugung einer von einer wechselspannung abhaengigen steuergleichspannung |
| JPS60111137A (ja) * | 1983-11-18 | 1985-06-17 | Shimadzu Corp | 定荷重材料試験機 |
| GB2189366B (en) * | 1986-04-17 | 1989-12-28 | British Broadcasting Corp | Method and apparatus for conveying information signals |
| US5253299A (en) * | 1989-02-03 | 1993-10-12 | Pioneer Electronic Corporation | Noise reduction apparatus in an FM stereo tuner |
| KR920007607B1 (ko) * | 1989-09-01 | 1992-09-08 | 삼성전자 주식회사 | 디지탈 텔레비젼 수상기에 있어서 콘트라스트 조정회로 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE754298C (de) * | 1935-07-04 | 1952-07-17 | Emi Ltd | Niederfrequentes UEbertragungssystem mit selbsttaetiger Amplituden-regelung durch eine quer zum UEbertragungsweg geschaltete Impedanz-Mehrgitterroehre |
| US2171671A (en) * | 1936-05-20 | 1939-09-05 | Emi Ltd | Thermionic valve circuit |
| GB643574A (en) * | 1946-01-19 | 1950-09-20 | Hermon Hosmer Scott | Improvements in apparatus or systems for transmitting electric signals |
| US2817715A (en) * | 1952-07-15 | 1957-12-24 | California Research Corp | Amplifier circuit having linear and non-linear amplification ranges |
| US2925529A (en) * | 1952-11-04 | 1960-02-16 | Bell Telephone Labor Inc | Non-linear transmission circuits |
| DE1036930B (de) * | 1955-04-07 | 1958-08-21 | Siemens Ag | Nachrichtenuebertragungssystem mit Kompander |
| DE1048950B (de) * | 1956-07-19 | 1959-01-22 | Siemens Ag | Nachrichtenuebertragungssystem mit einer Anordnung zur Geraeuschunterdrueckung |
| GB856892A (en) * | 1957-11-14 | 1960-12-21 | Collins Radio Co | Means for reducing the threshold of angular-modulation receivers |
| US2969459A (en) * | 1957-11-14 | 1961-01-24 | Collins Radio Co | Method and means for reducing the threshold of angular-modulation receivers |
| DE1120171B (de) * | 1959-12-24 | 1961-12-21 | Carl Lindstroem Ges M B H | Verfahren zur Erhoehung der mittleren Aussteuerung von Tonaufnahmen |
| US3111635A (en) * | 1960-05-05 | 1963-11-19 | Fairchild Recording Equipment | Method and apparatus for eliminating overloading in modulating systems having pre-emphasis means |
| FR1374370A (fr) * | 1963-06-07 | 1964-10-09 | Emi Ltd | Perfectionnements à l'enregistrement et la transmission des sons |
| FR1392138A (fr) * | 1964-04-08 | 1965-03-12 | Rca Corp | Dispositif pour la transmission de sons audibles |
-
1965
- 1965-08-11 GB GB3439465A patent/GB1120541A/en not_active Expired
-
1966
- 1966-08-08 NL NL6611156A patent/NL147297B/xx not_active IP Right Cessation
- 1966-08-09 CH CH1140866A patent/CH467560A/de unknown
- 1966-08-10 DE DE19661487276 patent/DE1487276C3/de not_active Expired
- 1966-08-11 JP JP41052369A patent/JPS4841044B1/ja active Pending
-
1968
- 1968-03-18 BE BE712376D patent/BE712376A/xx not_active IP Right Cessation
-
1972
- 1972-01-21 JP JP47007717A patent/JPS4842361B1/ja active Pending
- 1972-01-21 JP JP771872A patent/JPS5026887B1/ja active Pending
-
1973
- 1973-11-26 JP JP13183273A patent/JPS5114842B1/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3206449A1 (de) * | 1981-02-23 | 1982-10-14 | Hitachi, Ltd., Tokyo | Verfahren und vorrichtung zur aufnahme und wiedergabe von audiosignalen |
| DE3323751C1 (de) * | 1983-07-01 | 1984-11-22 | Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover | System zur UEbertragung eines frequenzmodulierten Tontraegers |
| DE3939478A1 (de) * | 1989-02-03 | 1990-08-09 | Pioneer Electronic Corp | Vorrichtung zur verminderung des rauschens in einem fm-stereotuner |
Also Published As
| Publication number | Publication date |
|---|---|
| BE712376A (en:Method) | 1968-07-31 |
| NL147297B (nl) | 1975-09-15 |
| JPS5026887B1 (en:Method) | 1975-09-04 |
| DE1487276A1 (de) | 1969-03-20 |
| DE1487276B2 (de) | 1975-02-20 |
| JPS4842361B1 (en:Method) | 1973-12-12 |
| JPS5114842B1 (en:Method) | 1976-05-12 |
| NL6611156A (en:Method) | 1967-02-13 |
| CH467560A (de) | 1969-01-15 |
| GB1120541A (en) | 1968-07-17 |
| JPS4841044B1 (en:Method) | 1973-12-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) |