FR2283586A1 - Circuits de traitement de signaux alternatifs pour compresseurs-expanseurs - Google Patents

Circuits de traitement de signaux alternatifs pour compresseurs-expanseurs

Info

Publication number
FR2283586A1
FR2283586A1 FR7526424A FR7526424A FR2283586A1 FR 2283586 A1 FR2283586 A1 FR 2283586A1 FR 7526424 A FR7526424 A FR 7526424A FR 7526424 A FR7526424 A FR 7526424A FR 2283586 A1 FR2283586 A1 FR 2283586A1
Authority
FR
France
Prior art keywords
expanders
compressors
signal processing
processing circuits
alternative signal
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.)
Withdrawn
Application number
FR7526424A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Ltd
Original Assignee
Northern Electric Co Ltd
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 Northern Electric Co Ltd filed Critical Northern Electric Co Ltd
Publication of FR2283586A1 publication Critical patent/FR2283586A1/fr
Withdrawn legal-status Critical Current

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
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0052—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using diodes
    • 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)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Networks Using Active Elements (AREA)
FR7526424A 1974-08-27 1975-08-27 Circuits de traitement de signaux alternatifs pour compresseurs-expanseurs Withdrawn FR2283586A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA207,850A CA998617A (en) 1974-08-27 1974-08-27 A-c signal processing circuits for compandors

Publications (1)

Publication Number Publication Date
FR2283586A1 true FR2283586A1 (fr) 1976-03-26

Family

ID=4100982

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7526424A Withdrawn FR2283586A1 (fr) 1974-08-27 1975-08-27 Circuits de traitement de signaux alternatifs pour compresseurs-expanseurs

Country Status (7)

Country Link
JP (1) JPS5147312A (fr)
CA (1) CA998617A (fr)
DE (1) DE2537998A1 (fr)
FR (1) FR2283586A1 (fr)
GB (1) GB1514242A (fr)
NL (1) NL7509585A (fr)
SE (1) SE7509493L (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485838A1 (fr) * 1980-06-30 1981-12-31 Dolby Ray Dispositif destine a modifier la plage dynamique de signaux d'entree

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744338A (en) 1980-08-29 1982-03-12 Victor Co Of Japan Ltd Noise reduction device
JPS58108857A (ja) * 1981-12-23 1983-06-29 Fujitsu Ltd 過電流保護回路
EP1837893A1 (fr) 2006-03-25 2007-09-26 HÜTTINGER Elektronik GmbH + Co. KG Dispositif de mesure d'un système plasma HF

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3119077A (en) * 1960-12-09 1964-01-21 Bell Telephone Labor Inc Automatic gain control circuit using variable attenuators in the signal path
GB951058A (en) * 1959-04-23 1964-03-04 Philips Electrical Ind Ltd Improvements in or relating to amplifiers
US3784749A (en) * 1971-02-10 1974-01-08 Kenwood Corp Noise eliminating device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB951058A (en) * 1959-04-23 1964-03-04 Philips Electrical Ind Ltd Improvements in or relating to amplifiers
US3119077A (en) * 1960-12-09 1964-01-21 Bell Telephone Labor Inc Automatic gain control circuit using variable attenuators in the signal path
US3784749A (en) * 1971-02-10 1974-01-08 Kenwood Corp Noise eliminating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485838A1 (fr) * 1980-06-30 1981-12-31 Dolby Ray Dispositif destine a modifier la plage dynamique de signaux d'entree

Also Published As

Publication number Publication date
SE7509493L (sv) 1976-03-01
NL7509585A (nl) 1976-03-02
JPS5147312A (en) 1976-04-22
DE2537998A1 (de) 1976-03-11
GB1514242A (en) 1978-06-14
CA998617A (en) 1976-10-19

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse