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FR811886A - Système de transmission de signaux - Google Patents

Système de transmission de signaux

Info

Publication number
FR811886A
FR811886A FR811886DA FR811886A FR 811886 A FR811886 A FR 811886A FR 811886D A FR811886D A FR 811886DA FR 811886 A FR811886 A FR 811886A
Authority
FR
France
Prior art keywords
signal transmission
transmission system
signal
transmission
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.)
Expired
Application number
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Application granted granted Critical
Publication of FR811886A publication Critical patent/FR811886A/fr
Expired 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
    • H04B1/66—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S84/00—Music
    • Y10S84/11—Frequency dividers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Amplifiers (AREA)
  • Noise Elimination (AREA)
FR811886D 1935-10-30 1936-10-16 Système de transmission de signaux Expired FR811886A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US466327XA 1935-10-30 1935-10-30
US113818A US2098956A (en) 1935-10-30 1936-12-02 Signaling system

Publications (1)

Publication Number Publication Date
FR811886A true FR811886A (fr) 1937-04-24

Family

ID=26724145

Family Applications (1)

Application Number Title Priority Date Filing Date
FR811886D Expired FR811886A (fr) 1935-10-30 1936-10-16 Système de transmission de signaux

Country Status (3)

Country Link
US (2) US2151091A (fr)
FR (1) FR811886A (fr)
GB (2) GB466327A (fr)

Families Citing this family (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2640880A (en) * 1953-06-02 Speech communication system
US3124654A (en) * 1964-03-10 Transmitter
US2458227A (en) * 1941-06-20 1949-01-04 Hartford Nat Bank & Trust Co Device for artificially generating speech sounds by electrical means
US3967066A (en) * 1941-09-24 1976-06-29 Bell Telephone Labor Inc ecret telephony
US3012098A (en) * 1941-11-22 1961-12-05 Bell Telephone Labor Inc Telephone privacy
US3985958A (en) * 1941-12-18 1976-10-12 Bell Telephone Laboratories, Incorporated Secret telephony
US3373245A (en) * 1942-08-27 1968-03-12 Bell Telephone Labor Inc Production of current of random variation
US2512889A (en) * 1943-12-17 1950-06-27 Dreyfus Jean Albert Electroacoustic apparatus
US2486106A (en) * 1944-02-23 1949-10-25 Robert H Brown Noise generating system
CH244727A (de) * 1944-06-01 1946-09-30 Patelhold Patentverwertung Verfahren und Einrichtung zur Übertragung von Sprachsignalen mit Frequenzraffung.
US3979558A (en) * 1944-06-30 1976-09-07 Bell Telephone Laboratories, Incorporated Signaling system
US3470323A (en) * 1944-06-30 1969-09-30 Bell Telephone Labor Inc Signaling system
US3965296A (en) * 1944-06-30 1976-06-22 Bell Telephone Laboratories, Incorporated Signaling system
US2653222A (en) * 1944-08-04 1953-09-22 Everard M Williams Radio jamming device
US3953677A (en) * 1945-05-10 1976-04-27 Bell Telephone Laboratories, Incorporated Key signaling system with multiple pulse generators
US3924074A (en) * 1945-05-19 1975-12-02 Bell Telephone Labor Inc Pulse position modulation key signaling system
US2423546A (en) * 1945-09-24 1947-07-08 Rca Corp Cadence suppression system for secrecy communication
US2466880A (en) * 1946-12-17 1949-04-12 Bell Telephone Labor Inc Speech analysis and synthesis system
US2593694A (en) * 1948-03-26 1952-04-22 Bell Telephone Labor Inc Wave analyzer for determining fundamental frequency of a complex wave
US2562109A (en) * 1948-04-30 1951-07-24 Bell Telephone Labor Inc Signal wave analyzer for deriving pitch information
US2517819A (en) * 1948-04-30 1950-08-08 Rca Corp Electroacoustic delay system
US2593698A (en) * 1948-05-10 1952-04-22 Beil Telephone Lab Inc Apparatus for determining pitch frequency in a complex wave
US2593695A (en) * 1948-05-10 1952-04-22 Bell Telephone Labor Inc Analyzer for determining the fundamental frequency of a complex wave
US2561478A (en) * 1948-05-28 1951-07-24 Bell Telephone Labor Inc Analyzing system for determining the fundamental frequency of a complex wave
US2522539A (en) * 1948-07-02 1950-09-19 Bell Telephone Labor Inc Frequency control for synthesizing systems
US2672512A (en) * 1949-02-02 1954-03-16 Bell Telephone Labor Inc System for analyzing and synthesizing speech
US2710892A (en) * 1949-05-20 1955-06-14 Bell Telephone Labor Inc Speech transmission system
US2575909A (en) * 1949-07-01 1951-11-20 Bell Telephone Labor Inc Voice-operated system
US2575910A (en) * 1949-09-21 1951-11-20 Bell Telephone Labor Inc Voice-operated signaling system
US2635146A (en) * 1949-12-15 1953-04-14 Bell Telephone Labor Inc Speech analyzing and synthesizing communication system
US2766325A (en) * 1951-09-01 1956-10-09 Itt Narrow band communication system
US2868882A (en) * 1953-01-12 1959-01-13 Itt Communication system
US4343970A (en) * 1953-02-19 1982-08-10 Bell Telephone Laboratories, Incorporated Signaling system
US2866000A (en) * 1953-09-28 1958-12-23 Lenkurt Electric Co Inc Carrier communication system
US2941038A (en) * 1953-10-26 1960-06-14 Iwatsu Electric Co Ltd Multiplex telephone system
US2923773A (en) * 1953-10-27 1960-02-02 Paul A Wagner Electronic system for handling information
US2883465A (en) * 1953-12-17 1959-04-21 Vilbig Friedrich Frequency band transformer
US2908761A (en) * 1954-10-20 1959-10-13 Bell Telephone Labor Inc Voice pitch determination
US2920143A (en) * 1955-06-20 1960-01-05 Companhia Portuguesa Radio Mar Redundancy reducing pulse communications system
US2892892A (en) * 1955-10-07 1959-06-30 Bell Telephone Labor Inc Vocoder absorption modulation system
US2890285A (en) * 1955-10-25 1959-06-09 Bell Telephone Labor Inc Narrow band transmission of speech
US2990453A (en) * 1955-12-06 1961-06-27 James L Flanagan Automatic spectrum analyzer
US2860187A (en) * 1955-12-08 1958-11-11 Bell Telephone Labor Inc Artificial reconstruction of speech
US2928901A (en) * 1956-04-13 1960-03-15 Bell Telephone Labor Inc Transmission and reconstruction of artificial speech
US2911476A (en) * 1956-04-24 1959-11-03 Bell Telephone Labor Inc Reduction of redundancy and bandwidth
US2958039A (en) * 1956-05-18 1960-10-25 Univ California Delay line time compressor
US2881257A (en) * 1956-08-16 1959-04-07 Bell Telephone Labor Inc Spectrum synthesizer
US3045071A (en) * 1956-11-13 1962-07-17 Decca Ltd Electrical transmission and storage of information represented by direct voltages
US3004459A (en) * 1956-12-31 1961-10-17 Baldwin Piano Co Modulation system
US2938079A (en) * 1957-01-29 1960-05-24 James L Flanagan Spectrum segmentation system for the automatic extraction of formant frequencies from human speech
US2866001A (en) * 1957-03-05 1958-12-23 Caldwell P Smith Automatic voice equalizer
US3030168A (en) * 1957-05-02 1962-04-17 Hurvitz Hyman Multiple stylus recorder for analog signals
US2902543A (en) * 1957-05-14 1959-09-01 Vilbig Friedrich Signal transmission
US2928902A (en) * 1957-05-14 1960-03-15 Vilbig Friedrich Signal transmission
US3023277A (en) * 1957-09-19 1962-02-27 Bell Telephone Labor Inc Reduction of sampling rate in pulse code transmission
US2943152A (en) * 1957-11-07 1960-06-28 Joseph C R Licklider Audio pitch control
US3043913A (en) * 1957-11-23 1962-07-10 Tomatis Alfred Ange Auguste Apparatus for the re-education of the voice
US2974198A (en) * 1958-02-10 1961-03-07 Bell Telephone Labor Inc Random signal generator
US3102929A (en) * 1958-05-03 1963-09-03 Philips Corp Speech-signal transmission system
US3078345A (en) * 1958-07-31 1963-02-19 Melpar Inc Speech compression systems
US3094692A (en) * 1958-10-01 1963-06-18 Electro Mechanical Res Inc Statistical telemetering
NL245178A (fr) * 1958-11-17
US3090837A (en) * 1959-04-29 1963-05-21 Ibm Speech bandwidth compression system
US3162819A (en) * 1960-06-27 1964-12-22 Bell Telephone Labor Inc Polyphase demodulation
US3116374A (en) * 1960-08-09 1963-12-31 Gen Dynamics Corp Voice bandwidth reduction transmission system
US3246084A (en) * 1960-08-26 1966-04-12 Bolt Beranek & Newman Method of and apparatus for speech compression and the like
US3198884A (en) * 1960-08-29 1965-08-03 Ibm Sound analyzing system
NL272809A (fr) * 1960-12-27
US3509281A (en) * 1966-09-29 1970-04-28 Ibm Voicing detection system
US3833767A (en) * 1971-06-23 1974-09-03 A Wolf Speech compression system
DE3688749T2 (de) * 1986-01-03 1993-11-11 Motorola Inc Verfahren und vorrichtung zur sprachsynthese ohne informationen über die stimme oder hinsichtlich stimmhöhe.
US5471527A (en) * 1993-12-02 1995-11-28 Dsc Communications Corporation Voice enhancement system and method
US5940791A (en) * 1997-05-09 1999-08-17 Washington University Method and apparatus for speech analysis and synthesis using lattice ladder notch filters

Also Published As

Publication number Publication date
US2098956A (en) 1937-11-16
GB482267A (en) 1938-03-25
GB466327A (en) 1937-05-26
US2151091A (en) 1939-03-21

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