NL147297B - NOISE REDUCTION DEVICE. - Google Patents

NOISE REDUCTION DEVICE.

Info

Publication number: NL147297B
Authority: NL; Netherlands
Prior art keywords: noise reduction; reduction device; noise; reduction
Prior art date: 1965-08-11

Application number

NL6611156A

Other languages

Dutch (nl)

Other versions

NL6611156A (en

Original Assignee

Dolby Ray Milton

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.)

1965-08-11

Filing date

1966-08-08

Publication date

1975-09-15

1966-08-08 Application filed by Dolby Ray Milton filed Critical Dolby Ray Milton

1967-02-13 Publication of NL6611156A publication Critical patent/NL6611156A/xx

1975-09-15 Publication of NL147297B publication Critical patent/NL147297B/en

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 ; Clipping in general
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
- H03G11/002—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general 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)
Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

NL6611156A 1965-08-11 1966-08-08 NOISE REDUCTION DEVICE. NL147297B (en)

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 (2)

Publication Number	Publication Date
NL6611156A NL6611156A (en)	1967-02-13
NL147297B true NL147297B (en)	1975-09-15

Family

ID=27254067

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL6611156A NL147297B (en)	1965-08-11	1966-08-08	NOISE REDUCTION DEVICE.

Country Status (6)

Country	Link
JP (4)	JPS4841044B1 (en)
BE (1)	BE712376A (en)
CH (1)	CH467560A (en)
DE (1)	DE1487276C3 (en)
GB (1)	GB1120541A (en)
NL (1)	NL147297B (en)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
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 (en) *	1971-05-04	1980-08-15	Philips Nv	NOISE REDUCTION CIRCUIT.
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
DE2542745C2 (en) *	1975-09-25	1983-06-09	Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt	Amplifier with variable transmission, especially for a compander system
DE2530144C3 (en) *	1975-07-05	1981-11-19	Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt	Amplifier with variable transmission
DE2655325C2 (en) *	1976-12-07	1984-01-26	Saba Gmbh, 7730 Villingen-Schwenningen	Magnetic tape recorder with an effective noise suppression circuit during playback
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
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 (en) *	1980-08-02	1982-03-04	Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt	Dynamic compression and expansion circuit for an analogue signal - has detector, quantitation device, store and arithmetic unit
JPS5744338A (en) *	1980-08-29	1982-03-12	Victor Co Of Japan Ltd	Noise reduction device
FR2490856B1 (en) *	1980-09-22	1985-09-27	Elison Sarl	APPARATUS FOR REDUCING BACKGROUND NOISE OF THE REAL-TIME SPECTRAL ANALYSIS TYPE
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
JPS57140085A (en) *	1981-02-23	1982-08-30	Hitachi Ltd	Audio signal recording and reproducing circuit
JPS5866064A (en) *	1981-10-15	1983-04-20	Toshiba Corp	Level detecting circuit
GB2111355B (en) *	1981-12-01	1985-02-13	Ray Milton Dolby	Improvements in circuit arrangements for modifying dynamic range
DE3305938A1 (en) *	1983-02-21	1984-08-23	Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover	Circuit arrangement for generating a DC control voltage dependent on an AC voltage
DE3323751C1 (en) *	1983-07-01	1984-11-22	Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover	System for the transmission of a frequency-modulated sound carrier
JPS60111137A (en) *	1983-11-18	1985-06-17	Shimadzu Corp	Constant load material testing machine
GB2189366B (en) *	1986-04-17	1989-12-28	British Broadcasting Corp	Method and apparatus for conveying information signals
US5067157A (en) *	1989-02-03	1991-11-19	Pioneer Electronic Corporation	Noise reduction apparatus in an FM stereo tuner
US5253299A (en) *	1989-02-03	1993-10-12	Pioneer Electronic Corporation	Noise reduction apparatus in an FM stereo tuner
KR920007607B1 (en) *	1989-09-01	1992-09-08	삼성전자 주식회사	Contrast Adjustment Circuit in Digital Television Receivers

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE754298C (en) *	1935-07-04	1952-07-17	Emi Ltd	Low-frequency transmission system with automatic amplitude control through an impedance multi-grating tube connected across the transmission path
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
DE1048950B (en) *	1956-07-19	1959-01-22	Siemens Ag	Message transmission system with an arrangement for noise suppression
US2969459A (en) *	1957-11-14	1961-01-24	Collins Radio Co	Method and means for reducing the threshold of angular-modulation receivers
GB856892A (en) *	1957-11-14	1960-12-21	Collins Radio Co	Means for reducing the threshold of angular-modulation receivers
DE1120171B (en) *	1959-12-24	1961-12-21	Carl Lindstroem Ges M B H	Method for increasing the mean modulation of sound recordings
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 (en) *	1963-06-07	1964-10-09	Emi Ltd	Improvements in recording and transmission of sounds
FR1392138A (en) *	1964-04-08	1965-03-12	Rca Corp	Device for the transmission of audible sounds

1965
- 1965-08-11 GB GB3439465A patent/GB1120541A/en not_active Expired
1966
- 1966-08-08 NL NL6611156A patent/NL147297B/en not_active IP Right Cessation
- 1966-08-09 CH CH1140866A patent/CH467560A/en unknown
- 1966-08-10 DE DE19661487276 patent/DE1487276C3/en 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 JP771872A patent/JPS5026887B1/ja active Pending
- 1972-01-21 JP JP47007717A patent/JPS4842361B1/ja active Pending
1973
- 1973-11-26 JP JP13183273A patent/JPS5114842B1/ja active Pending

Also Published As

Publication number	Publication date
JPS4842361B1 (en)	1973-12-12
DE1487276B2 (en)	1975-02-20
DE1487276A1 (en)	1969-03-20
NL6611156A (en)	1967-02-13
DE1487276C3 (en)	1982-01-07
JPS5114842B1 (en)	1976-05-12
GB1120541A (en)	1968-07-17
BE712376A (en)	1968-07-31
CH467560A (en)	1969-01-15
JPS5026887B1 (en)	1975-09-04
JPS4841044B1 (en)	1973-12-04

Publication	Publication Date	Title
NL147297B (en)	1975-09-15	NOISE REDUCTION DEVICE.
NL155130B (en)	1977-11-15	SEMI-GUIDE DEVICE.
ES124873Y (en)	1969-02-16	SPRAYING DEVICE.
NL146306B (en)	1975-06-16	DEVICE FOR CHARACTER RECOGNITION.
NL156541B (en)	1978-04-17	SEMI-GUIDE DEVICE.
DK119218B (en)	1970-11-30	Ventilation device.
DK119835B (en)	1971-03-01	Ultrasonic delay device.
DK108843C (en)	1968-02-12	Rambuk.
NL146247B (en)	1975-06-16	BRAKING DEVICE.
DK115053B (en)	1969-09-01	Floor.
DK108090C (en)	1967-08-21	Rambuk.
NL148707B (en)	1976-02-16	ULTRASONIC PRESENCE DETECTOR.
DE1917523U (en)	1965-06-10	LOADING DEVICE.
DK109764C (en)	1968-06-24	Muffler.
DE1917327U (en)	1965-06-10	BRACKET DEVICE.
DE1917315U (en)	1965-06-10	BUNSENBRENNER.
ES114468Y (en)	1965-12-16	SOUND DEVICE.
ES117020Y (en)	1966-04-01	ASHTRAY.
ES116217Y (en)	1966-05-16	ASHTRAY.
ES114557Y (en)	1965-12-16	AN ASSEMBLY DEVICE.
ES123662Y (en)	1967-12-01	NOISE DAMPER.
ES113001Y (en)	1965-11-01	CLEANING DEVICE.
ES110924Y (en)	1965-06-16	AN ABECEDARY.
DK105199C (en)	1966-09-05	Rinsing device.
ES115455Y (en)	1966-06-16	FASTENING DEVICE.

Legal Events

Date	Code	Title	Description
1986-08-31	NL80	Abbreviated name of patent owner mentioned of already nullified patent	Owner name: DOLBY
1986-10-16	V4	Lapsed because of reaching the maxim lifetime of a patent