FR2173328A1 - - Google Patents

Info

Publication number
FR2173328A1
FR2173328A1 FR7306735A FR7306735A FR2173328A1 FR 2173328 A1 FR2173328 A1 FR 2173328A1 FR 7306735 A FR7306735 A FR 7306735A FR 7306735 A FR7306735 A FR 7306735A FR 2173328 A1 FR2173328 A1 FR 2173328A1
Authority
FR
France
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.)
Granted
Application number
FR7306735A
Other languages
French (fr)
Other versions
FR2173328B1 (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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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
Priority claimed from DE2208805A external-priority patent/DE2208805A1/en
Priority claimed from DE19722218154 external-priority patent/DE2218154A1/en
Priority claimed from DE19722250094 external-priority patent/DE2250094A1/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2173328A1 publication Critical patent/FR2173328A1/fr
Application granted granted Critical
Publication of FR2173328B1 publication Critical patent/FR2173328B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • 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)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
FR7306735A 1972-02-24 1973-02-26 Expired FR2173328B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2208805A DE2208805A1 (en) 1972-02-24 1972-02-24 METHOD FOR TRANSMISSION OF BROADBAND AUDIO SIGNALS
DE19722218154 DE2218154A1 (en) 1972-04-14 1972-04-14 METHOD FOR TRANSMISSION OF BROADBAND AUDIO SIGNALS
DE19722250094 DE2250094A1 (en) 1972-10-12 1972-10-12 TRANSMISSION SYSTEM FOR TRANSMISSION OF BROADBAND SOUND SIGNALS

Publications (2)

Publication Number Publication Date
FR2173328A1 true FR2173328A1 (en) 1973-10-05
FR2173328B1 FR2173328B1 (en) 1976-11-05

Family

ID=27184138

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7306735A Expired FR2173328B1 (en) 1972-02-24 1973-02-26

Country Status (8)

Country Link
US (1) US3875341A (en)
JP (1) JPS48100004A (en)
AU (1) AU5258573A (en)
DD (1) DD105697A5 (en)
FR (1) FR2173328B1 (en)
HU (1) HU166106B (en)
IT (1) IT979348B (en)
NL (1) NL7302657A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104313A1 (en) * 1982-09-28 1984-04-04 Robert Bosch Gmbh Method and apparatus for narrow band voice transmission

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051331A (en) * 1976-03-29 1977-09-27 Brigham Young University Speech coding hearing aid system utilizing formant frequency transformation
US4170719A (en) * 1978-06-14 1979-10-09 Bell Telephone Laboratories, Incorporated Speech transmission system
US4433604A (en) * 1981-09-22 1984-02-28 Texas Instruments Incorporated Frequency domain digital encoding technique for musical signals
US4891840A (en) * 1986-03-10 1990-01-02 American Telephone And Telegraph Company, At&T Bell Laboratories Multi-channel signal transmission
DE3703143A1 (en) * 1987-02-03 1988-08-11 Thomson Brandt Gmbh METHOD FOR TRANSMITTING AN AUDIO SIGNAL
US4979188A (en) * 1988-04-29 1990-12-18 Motorola, Inc. Spectrally efficient method for communicating an information signal
US5559900A (en) * 1991-03-12 1996-09-24 Lucent Technologies Inc. Compression of signals for perceptual quality by selecting frequency bands having relatively high energy
FR2741744B1 (en) * 1995-11-23 1998-01-02 Thomson Csf METHOD AND DEVICE FOR EVALUATING THE ENERGY OF THE SPEAKING SIGNAL BY SUBBAND FOR LOW-FLOW VOCODER
CA2184541A1 (en) * 1996-08-30 1998-03-01 Tet Hin Yeap Method and apparatus for wavelet modulation of signals for transmission and/or storage
US7823513B2 (en) * 2003-07-08 2010-11-02 National Steel Car Limited Rail road car truck
US20140035747A1 (en) * 2012-08-02 2014-02-06 Sennco Solutions Inc. Dongle, system, and/or method for securing an electronic device
TWI457024B (en) * 2012-09-04 2014-10-11 Realtek Semiconductor Corp Bandwidth selection method
US10219090B2 (en) * 2013-02-27 2019-02-26 Analog Devices Global Method and detector of loudspeaker diaphragm excursion
US9980068B2 (en) 2013-11-06 2018-05-22 Analog Devices Global Method of estimating diaphragm excursion of a loudspeaker
US9813812B2 (en) 2014-12-12 2017-11-07 Analog Devices Global Method of controlling diaphragm excursion of electrodynamic loudspeakers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE594976C (en) * 1932-02-27 1934-03-27 Karl Otto Schmidt Method for better utilization of the transmission path
US2817711A (en) * 1954-05-10 1957-12-24 Bell Telephone Labor Inc Band compression system
GB931383A (en) * 1960-11-30 1963-07-17 Telefunken Patent Improvements in or relating to speech transmission systems
GB1032718A (en) * 1964-04-06 1966-06-15 Ibm Improvements relating to vocoder speech transmission systems

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840639A (en) * 1952-12-31 1958-06-24 Itt Method and apparatus for signal presentation
US2957948A (en) * 1956-07-20 1960-10-25 Bell Telephone Labor Inc Frequency band compression
NL127390C (en) * 1958-11-17
US3246084A (en) * 1960-08-26 1966-04-12 Bolt Beranek & Newman Method of and apparatus for speech compression and the like
NL272809A (en) * 1960-12-27
US3349184A (en) * 1965-05-17 1967-10-24 Harvey L Morgan Bandwidth compression and expansion by frequency division and multiplication
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
US3674939A (en) * 1969-11-26 1972-07-04 Fred A Brooks Baseband pulse code modulation system
US3696298A (en) * 1970-07-27 1972-10-03 Kahn Res Lab Audio signal transmission system and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE594976C (en) * 1932-02-27 1934-03-27 Karl Otto Schmidt Method for better utilization of the transmission path
US2817711A (en) * 1954-05-10 1957-12-24 Bell Telephone Labor Inc Band compression system
GB931383A (en) * 1960-11-30 1963-07-17 Telefunken Patent Improvements in or relating to speech transmission systems
GB1032718A (en) * 1964-04-06 1966-06-15 Ibm Improvements relating to vocoder speech transmission systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104313A1 (en) * 1982-09-28 1984-04-04 Robert Bosch Gmbh Method and apparatus for narrow band voice transmission

Also Published As

Publication number Publication date
NL7302657A (en) 1973-08-28
DD105697A5 (en) 1974-05-05
AU5258573A (en) 1974-08-29
IT979348B (en) 1974-09-30
FR2173328B1 (en) 1976-11-05
US3875341A (en) 1975-04-01
HU166106B (en) 1975-01-28
JPS48100004A (en) 1973-12-18

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Legal Events

Date Code Title Description
ST Notification of lapse