FR2341234A2 - Systeme de transmission de signaux acoustiques a large bande - Google Patents

Systeme de transmission de signaux acoustiques a large bande

Info

Publication number
FR2341234A2
FR2341234A2 FR7703141A FR7703141A FR2341234A2 FR 2341234 A2 FR2341234 A2 FR 2341234A2 FR 7703141 A FR7703141 A FR 7703141A FR 7703141 A FR7703141 A FR 7703141A FR 2341234 A2 FR2341234 A2 FR 2341234A2
Authority
FR
France
Prior art keywords
baseband
signals
vocoder
receiver
sync
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.)
Granted
Application number
FR7703141A
Other languages
English (en)
Other versions
FR2341234B2 (fr
Inventor
Jaroslav Blahna
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 DE2309987A external-priority patent/DE2309987C2/de
Priority claimed from DE19732321230 external-priority patent/DE2321230C2/de
Priority claimed from DE2605306A external-priority patent/DE2605306C2/de
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2341234A2 publication Critical patent/FR2341234A2/fr
Application granted granted Critical
Publication of FR2341234B2 publication Critical patent/FR2341234B2/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques 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
    • H04B1/662—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 time/frequency relationship, e.g. time compression or expansion

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)
FR7703141A 1973-02-28 1977-02-04 Systeme de transmission de signaux acoustiques a large bande Granted FR2341234A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2309987A DE2309987C2 (de) 1973-02-28 1973-02-28 System für die Übertragung breitbandiger Signale
DE19732321230 DE2321230C2 (de) 1973-04-26 1973-04-26 System zum Übertragen breitbandiger Tonsignale
DE2605306A DE2605306C2 (de) 1976-02-11 1976-02-11 Verfahren und Schaltungsanordnung zum störungsfreien Empfang des Basisbandes eines Basisband-Vocoders

Publications (2)

Publication Number Publication Date
FR2341234A2 true FR2341234A2 (fr) 1977-09-09
FR2341234B2 FR2341234B2 (fr) 1981-02-06

Family

ID=27185099

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7703141A Granted FR2341234A2 (fr) 1973-02-28 1977-02-04 Systeme de transmission de signaux acoustiques a large bande

Country Status (1)

Country Link
FR (1) FR2341234A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0633673A1 (fr) * 1993-07-06 1995-01-11 SAFARE-CROUZET Société Anonyme Procédé de transmission acoustique sous-marine et dispositif pour l'amélioration de l'intelligibilité de telles transmissions

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0633673A1 (fr) * 1993-07-06 1995-01-11 SAFARE-CROUZET Société Anonyme Procédé de transmission acoustique sous-marine et dispositif pour l'amélioration de l'intelligibilité de telles transmissions
FR2707443A1 (fr) * 1993-07-06 1995-01-13 Safare Crouzet Procédé de transmission acoustique sous-marine et dispositif pour l'amélioration de l'intelligibilité de telles transmissions.
US5572485A (en) * 1993-07-06 1996-11-05 Safare-Crouzet Underwater acoustic transmission method and equipment to improve the intelligibility of such transmissions

Also Published As

Publication number Publication date
FR2341234B2 (fr) 1981-02-06

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