DK140299B - Method for compressing and / or expanding the dynamic range of an input signal and circuitry for performing the method. - Google Patents

Method for compressing and / or expanding the dynamic range of an input signal and circuitry for performing the method.

Info

Publication number
DK140299B
DK140299B DK12669A DK12669A DK140299B DK 140299 B DK140299 B DK 140299B DK 12669 A DK12669 A DK 12669A DK 12669 A DK12669 A DK 12669A DK 140299 B DK140299 B DK 140299B
Authority
DK
Denmark
Prior art keywords
compressing
expanding
circuitry
input signal
dynamic range
Prior art date
Application number
DK12669A
Other languages
Danish (da)
Other versions
DK140299C (en
Inventor
Ray Milton Dolby
Original Assignee
Ray Milton Dolby
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 by Ray Milton Dolby filed Critical Ray Milton Dolby
Priority to DK14677A priority Critical patent/DK140300B/en
Priority to DK14577A priority patent/DK140240B/en
Publication of DK140299B publication Critical patent/DK140299B/en
Application granted granted Critical
Publication of DK140299C publication Critical patent/DK140299C/da

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)
  • 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)
  • Processing Of Color Television Signals (AREA)
DK12669A 1968-01-10 1969-01-09 Method for compressing and / or expanding the dynamic range of an input signal and circuitry for performing the method. DK140299B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DK14677A DK140300B (en) 1968-01-10 1977-01-14 Signal compressor or expander.
DK14577A DK140240B (en) 1968-01-10 1977-01-14 Signal expander.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB154068 1968-01-10

Publications (2)

Publication Number Publication Date
DK140299B true DK140299B (en) 1979-07-23
DK140299C DK140299C (en) 1980-01-14

Family

ID=9723759

Family Applications (1)

Application Number Title Priority Date Filing Date
DK12669A DK140299B (en) 1968-01-10 1969-01-09 Method for compressing and / or expanding the dynamic range of an input signal and circuitry for performing the method.

Country Status (11)

Country Link
JP (4) JPS518284B1 (en)
AT (2) AT303122B (en)
BE (1) BE726177A (en)
CH (1) CH501342A (en)
DE (1) DE1900639B2 (en)
DK (1) DK140299B (en)
FR (1) FR1600207A (en)
GB (1) GB1253031A (en)
NL (1) NL161006C (en)
NO (2) NO126505B (en)
SE (3) SE366623B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1390341A (en) * 1971-03-12 1975-04-09 Dolby Laboratories Inc Signal compressors and expanders
US3729693A (en) * 1971-08-02 1973-04-24 R Dolby Compressor/expander switching methods and apparatus
GB1432763A (en) * 1972-05-02 1976-04-22 Dolby Laboratories Inc Compressors expanders and noise reduction systems
GB1438711A (en) * 1973-01-23 1976-06-09 Dolby Laboratories Inc Calibration oscillators for noise reduction systems
US3909733A (en) * 1973-05-17 1975-09-30 Dolby Laboratories Inc Dynamic range modifying circuits utilizing variable negative resistance
JPS5439516A (en) * 1977-09-02 1979-03-27 Sanyo Electric Co Ltd Noise reduction unit
DE2856045A1 (en) * 1978-12-23 1980-07-10 Licentia Gmbh CIRCUIT FOR SELECTING AUTOMATIC DYNAMIC COMPRESSION OR EXPANSION
DE2919280A1 (en) * 1979-05-12 1980-11-20 Licentia Gmbh CIRCUIT FOR SELECTING AUTOMATIC DYNAMIC COMPRESSION OR EXPANSION
DK172325B1 (en) * 1980-06-30 1998-03-16 Ray Milton Dolby Signal compressor and signal expander for use in a transmission system
JP2005175674A (en) * 2003-12-09 2005-06-30 Nec Corp Signal compression/decompression device and portable communication terminal
JP7165277B1 (en) * 2022-02-02 2022-11-02 幾美 相澤 Reused food product and method for manufacturing reusable food product

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111635A (en) 1960-05-05 1963-11-19 Fairchild Recording Equipment Method and apparatus for eliminating overloading in modulating systems having pre-emphasis means
FR1489458A (en) 1965-08-13 1967-07-21 Ford France Radiation curable paint binder

Also Published As

Publication number Publication date
JPS531602B1 (en) 1978-01-20
NL161006C (en) 1979-12-17
NL6900209A (en) 1969-07-14
DK140299C (en) 1980-01-14
SE350379B (en) 1972-10-23
NL161006B (en) 1979-07-16
CH501342A (en) 1970-12-31
JPS518768B1 (en) 1976-03-19
DE1900639A1 (en) 1969-07-31
BE726177A (en) 1969-05-29
NO128842B (en) 1974-01-14
DE1900639B2 (en) 1976-04-01
SE366623B (en) 1974-04-29
AT308832B (en) 1973-06-15
JPS518767B1 (en) 1976-03-19
GB1253031A (en) 1971-11-10
SE367106B (en) 1974-05-13
JPS518284B1 (en) 1976-03-16
AT303122B (en) 1972-11-10
NO126505B (en) 1973-02-12
FR1600207A (en) 1970-07-20

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Legal Events

Date Code Title Description
PUP Patent expired