BE584353A - Systèmes de compression de bandes de fréquences - Google Patents

Systèmes de compression de bandes de fréquences

Info

Publication number
BE584353A
BE584353A BE584353A BE584353A BE584353A BE 584353 A BE584353 A BE 584353A BE 584353 A BE584353 A BE 584353A BE 584353 A BE584353 A BE 584353A BE 584353 A BE584353 A BE 584353A
Authority
BE
Belgium
Prior art keywords
frequency band
compression systems
band compression
systems
frequency
Prior art date
Application number
BE584353A
Other languages
English (en)
French (fr)
Inventor
Manfred Robert Schroeder
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of BE584353A publication Critical patent/BE584353A/fr

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
    • H04B1/66—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 reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667—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 reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Amplitude Modulation (AREA)
BE584353A 1958-11-17 1959-11-05 Systèmes de compression de bandes de fréquences BE584353A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US774173A US3030450A (en) 1958-11-17 1958-11-17 Band compression system

Publications (1)

Publication Number Publication Date
BE584353A true BE584353A (fr) 1960-03-01

Family

ID=25100462

Family Applications (1)

Application Number Title Priority Date Filing Date
BE584353A BE584353A (fr) 1958-11-17 1959-11-05 Systèmes de compression de bandes de fréquences

Country Status (6)

Country Link
US (1) US3030450A (hu)
BE (1) BE584353A (hu)
DE (1) DE1114851B (hu)
FR (1) FR1239222A (hu)
GB (1) GB937404A (hu)
NL (2) NL245178A (hu)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL272110A (nl) * 1960-12-08 1964-08-25 Jean Albert Dreyfus Drukaandrijving
NL272809A (hu) * 1960-12-27
US3167710A (en) * 1961-02-01 1965-01-26 Jersey Prod Res Co System for analysis of electrical signals including parallel filter channels
US3165734A (en) * 1961-11-02 1965-01-12 Grodzinsky Samuel Screw noise simulation technique
US3411089A (en) * 1962-06-28 1968-11-12 Raytheon Co Communication system
US3431356A (en) * 1965-06-04 1969-03-04 Integrated Electronic Corp Apparatus and method for reconstructing speech
US3420955A (en) * 1965-11-19 1969-01-07 Bell Telephone Labor Inc Automatic peak selector
US3431362A (en) * 1966-04-22 1969-03-04 Bell Telephone Labor Inc Voice-excited,bandwidth reduction system employing pitch frequency pulses generated by unencoded baseband signal
US3471644A (en) * 1966-05-02 1969-10-07 Massachusetts Inst Technology Voice vocoding and transmitting system
US3448216A (en) * 1966-08-03 1969-06-03 Bell Telephone Labor Inc Vocoder system
DE1537596B1 (de) * 1967-11-14 1970-09-03 Michel Copel Verfahren und Schaltungsanordnung zum Verbessern der Verstaendlichkeit frequenzverzerrter Sprache
US3541266A (en) * 1968-09-30 1970-11-17 Octronix Inc Bandwidth compressor and expander
US3622714A (en) * 1969-09-02 1971-11-23 Bell Telephone Labor Inc Telephonic transmission using complementary comb filters
US3743787A (en) * 1969-09-02 1973-07-03 H Fujisaki Speech signal transmission systems utilizing a non-linear circuit in the base band channel
DD105697A5 (hu) * 1972-02-24 1974-05-05
US3914554A (en) * 1973-05-18 1975-10-21 Bell Telephone Labor Inc Communication system employing spectrum folding
US3946162A (en) * 1973-06-04 1976-03-23 International Standard Electric Corporation System for transferring wideband sound signals
FR2238412A5 (hu) * 1973-07-20 1975-02-14 Trt Telecom Radio Electr
US3988546A (en) * 1974-09-13 1976-10-26 General Signal Corporation System for audibly recognizing an aurally unclassifiable signal
GB1559897A (en) * 1977-03-15 1980-01-30 Post Office Multiplexing speech
US4181822A (en) * 1978-03-07 1980-01-01 Bell & Howell Company Bandsplitter systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640880A (en) * 1953-06-02 Speech communication system
DE722607C (de) * 1939-01-14 1942-07-22 Karl Otto Schmidt Dr Verfahren zur besseren Ausnutzung des UEbertragungsweges
US2151091A (en) * 1935-10-30 1939-03-21 Bell Telephone Labor Inc Signal transmission
US2817711A (en) * 1954-05-10 1957-12-24 Bell Telephone Labor Inc Band compression system

Also Published As

Publication number Publication date
US3030450A (en) 1962-04-17
NL127390C (hu)
DE1114851B (de) 1961-10-12
NL245178A (hu)
FR1239222A (fr) 1960-08-19
GB937404A (en) 1963-09-18

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