NL7203316A - - Google Patents

Info

Publication number
NL7203316A
NL7203316A NL7203316A NL7203316A NL7203316A NL 7203316 A NL7203316 A NL 7203316A NL 7203316 A NL7203316 A NL 7203316A NL 7203316 A NL7203316 A NL 7203316A NL 7203316 A NL7203316 A NL 7203316A
Authority
NL
Netherlands
Application number
NL7203316A
Other versions
NL181472B (nl
NL181472C (nl
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.)
Filing date
Publication date
Application filed filed Critical
Publication of NL7203316A publication Critical patent/NL7203316A/xx
Publication of NL181472B publication Critical patent/NL181472B/xx
Application granted granted Critical
Publication of NL181472C publication Critical patent/NL181472C/xx

Links

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
    • 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)
  • 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)
  • Amplifiers (AREA)
NLAANVRAGE7203316,A 1971-03-12 1972-03-13 Schakeling voor het wijzigen van het dynamische bereik van een ingangsstroom- of -spanningssignaal. NL181472C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB674771A GB1390341A (en) 1971-03-12 1971-03-12 Signal compressors and expanders

Publications (3)

Publication Number Publication Date
NL7203316A true NL7203316A (en:Method) 1972-09-14
NL181472B NL181472B (nl) 1987-03-16
NL181472C NL181472C (nl) 1987-08-17

Family

ID=9820059

Family Applications (3)

Application Number Title Priority Date Filing Date
NLAANVRAGE7203318,A NL181769C (nl) 1971-03-12 1972-03-13 Schakeling voor het veranderen van het dynamische bereik van een ingangssignaal.
NLAANVRAGE7203316,A NL181472C (nl) 1971-03-12 1972-03-13 Schakeling voor het wijzigen van het dynamische bereik van een ingangsstroom- of -spanningssignaal.
NL7203315A NL7203315A (en:Method) 1971-03-12 1972-03-13

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7203318,A NL181769C (nl) 1971-03-12 1972-03-13 Schakeling voor het veranderen van het dynamische bereik van een ingangssignaal.

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL7203315A NL7203315A (en:Method) 1971-03-12 1972-03-13

Country Status (7)

Country Link
US (3) US3775705A (en:Method)
JP (3) JPS5623331B1 (en:Method)
CA (3) CA963813A (en:Method)
DE (3) DE2211347C3 (en:Method)
GB (1) GB1390341A (en:Method)
NL (3) NL181769C (en:Method)
SE (3) SE381968B (en:Method)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1438711A (en) * 1973-01-23 1976-06-09 Dolby Laboratories Inc Calibration oscillators for noise reduction systems
GB1469101A (en) * 1973-03-23 1977-03-30 Dolby Laboratories Inc Noise reduction systems
US3909733A (en) * 1973-05-17 1975-09-30 Dolby Laboratories Inc Dynamic range modifying circuits utilizing variable negative resistance
US3956700A (en) * 1975-04-18 1976-05-11 Bell Telephone Laboratories, Incorporated Two-feedback-path delta modulation system with circuits for reducing pulse width modulation
US4101849A (en) * 1976-11-08 1978-07-18 Dbx, Inc. Adaptive filter
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
US4400583A (en) * 1979-07-20 1983-08-23 Metme Communications Complete audio processing system
JPS56106433A (en) * 1980-01-28 1981-08-24 Sony Corp Noise reducing circuit
DK172325B1 (da) * 1980-06-30 1998-03-16 Ray Milton Dolby Signalkompressor og signalekspander til brug i et transmissionssystem
FR2485836B1 (fr) * 1980-06-30 1986-08-14 Dolby Ray Circuit de suppression des effets de modulation en frequences intermediaires dans des compresseurs, des expanseurs et des dispositifs de reduction des bruits
JPS5866064A (ja) * 1981-10-15 1983-04-20 Toshiba Corp レベル検出回路
GB2111356B (en) * 1981-12-01 1985-03-20 Ray Milton Dolby Improvements in circuit arrangements for modifying dynamic range
JPS5933357U (ja) * 1982-08-27 1984-03-01 パイオニア株式会社 圧縮伸長装置
US4551636A (en) * 1983-05-25 1985-11-05 Tektronix, Inc. Wide bandwidth signal coupling circuit having a variable voltage-level shift from input to output
US4801890A (en) * 1985-06-17 1989-01-31 Dolby Ray Milton Circuit arrangements for modifying dynamic range using variable combining techniques
US4809338A (en) * 1985-07-05 1989-02-28 Harman International Industries, Incorporated Automotive sound system
US4759065A (en) * 1986-09-22 1988-07-19 Harman International Industries, Incorporated Automotive sound system
US4696044A (en) * 1986-09-29 1987-09-22 Waller Jr James K Dynamic noise reduction with logarithmic control
US4932615A (en) * 1988-10-12 1990-06-12 Electric Power Research Institute Railroad track simulator for assessing track signal susceptibility to electric power line interference
US5278912A (en) * 1991-06-28 1994-01-11 Resound Corporation Multiband programmable compression system
US5471527A (en) 1993-12-02 1995-11-28 Dsc Communications Corporation Voice enhancement system and method
US6177784B1 (en) * 1999-08-19 2001-01-23 Hughes Electronics Corporation Large signal gain modifier circuit
JP3937426B2 (ja) * 2001-07-16 2007-06-27 日本電気株式会社 プリアンプ回路
US20040024596A1 (en) * 2002-07-31 2004-02-05 Carney Laurel H. Noise reduction system
US7715573B1 (en) * 2005-02-28 2010-05-11 Texas Instruments Incorporated Audio bandwidth expansion
WO2009086174A1 (en) 2007-12-21 2009-07-09 Srs Labs, Inc. System for adjusting perceived loudness of audio signals
US8538042B2 (en) 2009-08-11 2013-09-17 Dts Llc System for increasing perceived loudness of speakers
US9312829B2 (en) 2012-04-12 2016-04-12 Dts Llc System for adjusting loudness of audio signals in real time
US20130295869A1 (en) * 2012-05-01 2013-11-07 Microsemi Corporation Square law extension technique for high speed radio detection
US9871530B1 (en) 2016-12-11 2018-01-16 John Howard La Grou Multi-path analog-to-digital and digital-to-analog conversion of PDM signals
US10256782B2 (en) 2017-04-25 2019-04-09 John Howard La Grou Multi-path power amplifier

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052110A (en) * 1934-07-14 1936-08-25 Newtone Engineering Inc Sound translating system
US2255690A (en) * 1935-10-22 1941-09-09 Hazeltine Corp Band-pass selector
US2182089A (en) * 1936-02-22 1939-12-05 Siemens Ag Frequency dependent damping network
US2413263A (en) * 1942-06-29 1946-12-24 William Ockrant Method and means for frequency control
US2920281A (en) * 1954-04-27 1960-01-05 Lenkurt Electric Co Inc Noise suppressor
US2936426A (en) * 1955-05-02 1960-05-10 Joseph F Mcclean Filter network
US2958831A (en) * 1956-12-17 1960-11-01 American Telephone & Telegraph Equalizer
US3182271A (en) * 1960-12-15 1965-05-04 Aiken William Ross Tone control circuit for emphasizing low volume high and low frequency signals
US3188581A (en) * 1961-01-10 1965-06-08 Sperry Rand Corp Feedback controlled single sideband generator
US3150327A (en) * 1961-09-29 1964-09-22 Gulf Res & Developement Compan Self-adjusting attenuation equalizer
US3229038A (en) * 1961-10-31 1966-01-11 Rca Corp Sound signal transforming system
DE1251391B (en:Method) * 1962-10-01
US3281723A (en) * 1964-02-03 1966-10-25 Fairchild Recording Equipment Dynamic equalizer circuits having a light dependent cell for producing a relatively constant apparent loudness effect
GB1120541A (en) * 1965-08-11 1968-07-17 Dolby Ray Milton Improvements in noise reduction systems
GB1253031A (en:Method) * 1968-01-10 1971-11-10
US3665345A (en) * 1969-07-21 1972-05-23 Dolby Laboratories Inc Compressors and expanders for noise reduction systems

Also Published As

Publication number Publication date
US3845416A (en) 1974-10-29
NL7203318A (en:Method) 1972-09-14
DE2211347A1 (de) 1972-09-28
DE2211348A1 (de) 1972-09-28
DE2211348C3 (de) 1982-04-29
DE2211348B2 (de) 1981-08-20
CA960973A (en) 1975-01-14
NL181769C (nl) 1987-10-16
GB1390341A (en) 1975-04-09
NL181472B (nl) 1987-03-16
SE381789B (sv) 1975-12-15
JPS5623330B1 (en:Method) 1981-05-30
SE381968B (sv) 1975-12-22
CA955856A (en) 1974-10-08
US3775705A (en) 1973-11-27
NL181472C (nl) 1987-08-17
US3967219A (en) 1976-06-29
SE373010B (en:Method) 1975-01-20
DE2211347B2 (de) 1980-07-10
DE2211374A1 (de) 1972-09-21
DE2211347C3 (de) 1981-08-27
JPS592409B1 (en:Method) 1984-01-18
NL7203315A (en:Method) 1972-09-14
JPS5623331B1 (en:Method) 1981-05-30
NL181769B (nl) 1987-05-18
CA963813A (en) 1975-03-04
DE2211374C2 (de) 1982-04-29

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Legal Events

Date Code Title Description
BB A search report has been drawn up
BC A request for examination has been filed
DNT Communications of changes of names of applicants whose applications have been laid open to public inspection

Free format text: DOLBY LABORATORIES LICENSING CORPORATION

A85 Still pending on 85-01-01
V4 Lapsed because of reaching the maximum lifetime of a patent