BE611734A - Système de reduction de bande passante - Google Patents

Système de reduction de bande passante

Info

Publication number
BE611734A
BE611734A BE611734A BE611734A BE611734A BE 611734 A BE611734 A BE 611734A BE 611734 A BE611734 A BE 611734A BE 611734 A BE611734 A BE 611734A BE 611734 A BE611734 A BE 611734A
Authority
BE
Belgium
Prior art keywords
reduction system
bandwidth reduction
bandwidth
reduction
Prior art date
Application number
BE611734A
Other languages
English (en)
Inventor
Benjamin Franklin Logan Jr
Anthony John Prestigiacomo
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 BE611734A publication Critical patent/BE611734A/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
BE611734A 1960-12-27 1961-12-19 Système de reduction de bande passante BE611734A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78660A US3139487A (en) 1960-12-27 1960-12-27 Bandwidth reduction system

Publications (1)

Publication Number Publication Date
BE611734A true BE611734A (fr) 1962-04-16

Family

ID=22145467

Family Applications (1)

Application Number Title Priority Date Filing Date
BE611734A BE611734A (fr) 1960-12-27 1961-12-19 Système de reduction de bande passante

Country Status (6)

Country Link
US (1) US3139487A (fr)
BE (1) BE611734A (fr)
DE (1) DE1151285B (fr)
ES (1) ES273618A1 (fr)
GB (1) GB947240A (fr)
NL (1) NL272809A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3471648A (en) * 1966-07-28 1969-10-07 Bell Telephone Labor Inc Vocoder utilizing companding to reduce background noise caused by quantizing errors
DD105697A5 (fr) * 1972-02-24 1974-05-05
US3872250A (en) * 1973-02-28 1975-03-18 David C Coulter Method and system for speech compression
DE2309987C2 (de) * 1973-02-28 1982-05-13 Standard Elektrik Lorenz Ag, 7000 Stuttgart System für die Übertragung breitbandiger Signale
US3894190A (en) * 1973-02-28 1975-07-08 Int Standard Electric Corp System for transferring wide-band sound signals
NL7600932A (nl) * 1976-01-30 1977-08-02 Philips Nv Bandcompressie systeem.
DE3174560D1 (en) * 1981-07-28 1986-06-12 Ibm Transmission method for voice and digital data and arrangement for carrying out said method
US4545065A (en) * 1982-04-28 1985-10-01 Xsi General Partnership Extrema coding signal processing method and apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151091A (en) * 1935-10-30 1939-03-21 Bell Telephone Labor Inc Signal transmission
DE1079118B (de) * 1958-04-11 1960-04-07 Siemens Ag Verfahren zur elektrischen Nachrichtenuebertragung unter Frequenzbandpressung
NL127390C (fr) * 1958-11-17

Also Published As

Publication number Publication date
ES273618A1 (es) 1962-04-01
DE1151285B (de) 1963-07-11
NL272809A (fr)
US3139487A (en) 1964-06-30
GB947240A (en) 1964-01-22

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