FR2305064A1 - Generateur de signaux representant, sous forme codee, un son de faible volume - Google Patents

Generateur de signaux representant, sous forme codee, un son de faible volume

Info

Publication number
FR2305064A1
FR2305064A1 FR7602998A FR7602998A FR2305064A1 FR 2305064 A1 FR2305064 A1 FR 2305064A1 FR 7602998 A FR7602998 A FR 7602998A FR 7602998 A FR7602998 A FR 7602998A FR 2305064 A1 FR2305064 A1 FR 2305064A1
Authority
FR
France
Prior art keywords
signal generator
low volume
encoded form
volume sound
generator representing
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
FR7602998A
Other languages
English (en)
French (fr)
Other versions
FR2305064B1 (enExample
Inventor
Ulrich Appel
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 Business Machines Corp
Original Assignee
International Business Machines 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
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of FR2305064A1 publication Critical patent/FR2305064A1/fr
Application granted granted Critical
Publication of FR2305064B1 publication Critical patent/FR2305064B1/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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/012—Comfort noise or silence coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/17—Time-division multiplex systems in which the transmission channel allotted to a first user may be taken away and re-allotted to a second user if the first user becomes inactive, e.g. TASI
    • H04J3/172—Digital speech interpolation, i.e. DSI

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)
FR7602998A 1975-03-20 1976-01-29 Generateur de signaux representant, sous forme codee, un son de faible volume Granted FR2305064A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/560,422 US3975686A (en) 1975-03-20 1975-03-20 Loss signal generation for delta-modulated signals

Publications (2)

Publication Number Publication Date
FR2305064A1 true FR2305064A1 (fr) 1976-10-15
FR2305064B1 FR2305064B1 (enExample) 1978-11-10

Family

ID=24237757

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7602998A Granted FR2305064A1 (fr) 1975-03-20 1976-01-29 Generateur de signaux representant, sous forme codee, un son de faible volume

Country Status (5)

Country Link
US (1) US3975686A (enExample)
JP (1) JPS5931260B2 (enExample)
DE (1) DE2607387C2 (enExample)
FR (1) FR2305064A1 (enExample)
GB (1) GB1530632A (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE404982B (sv) * 1977-12-22 1978-11-06 Ericsson Telefon Ab L M Sett och anordning for att i en telefonianleggning overfora digital information
US4295217A (en) * 1979-12-28 1981-10-13 Ibm Corporation Apparatus to reduce the effect of a mid-talkspurt freeze-out
US4528423A (en) * 1981-12-04 1985-07-09 Base Ten Systems, Inc. Remote subscriber terminal unit
US4442320A (en) * 1981-12-04 1984-04-10 Base Ten Systems, Inc. Remote subscriber interaction system
FR2569322B1 (fr) * 1984-08-17 1986-12-05 Trt Telecom Radio Electr Annuleur d'echo utilisant la modulation delta
JP2001242896A (ja) * 2000-02-29 2001-09-07 Matsushita Electric Ind Co Ltd 音声符号化／復号装置およびその方法
KR102464915B1 (ko) * 2022-01-27 2022-11-09 주식회사 알에이에이피 공간분석과 사업비검토 관련 결과보고서 생성 자동화 장치 및 방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1520546A (fr) * 1966-05-05 1968-04-12 Sits Soc It Telecom Siemens Système de transmission de signaux téléphoniques à allocation dans le temps
FR95619E (fr) * 1966-05-05 1971-03-26 It Telecommunicazioni Siemens Systeme de transmission de signaux téléphoniques a allocation de temps.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE626344A (enExample) * 1961-12-21
US3568061A (en) * 1968-04-29 1971-03-02 Bell Telephone Labor Inc Bilateral digital transmission system with companding having same step size in each direction
US3647993A (en) * 1970-05-18 1972-03-07 Wescom Tone disabler
US3777066B1 (en) * 1972-01-13 1996-07-30 Univ Iowa State Res Found Method and system for synchronizing the transmission of digital data while providing variable length filler code
US4009343A (en) * 1974-12-30 1977-02-22 International Business Machines Corporation Switching and activity compression between telephone lines and digital communication channels

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1520546A (fr) * 1966-05-05 1968-04-12 Sits Soc It Telecom Siemens Système de transmission de signaux téléphoniques à allocation dans le temps
FR95619E (fr) * 1966-05-05 1971-03-26 It Telecommunicazioni Siemens Systeme de transmission de signaux téléphoniques a allocation de temps.

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
*REVUE US: "IEEE TRANSACTIONS ON COMMUNICATIONS", VOL. COM-22, NO. 11, NOVEMBRE 1974. ARTICLE: LINEAR, NON-LINEAR AND ADAPTIVE DELTA MODULATION. AUTEUR: SCHINDLER, PAGES 1807-1823) *
REVUE DT: "ELEKTRO TECHNIK", VOL. 45, NO. 23, 24 AOUT 1963. ARTICLE: TASI FULLT GESPRACHSLUCKEN, PAGES 455-457 *

Also Published As

Publication number Publication date
GB1530632A (en) 1978-11-01
US3975686A (en) 1976-08-17
JPS51114009A (en) 1976-10-07
FR2305064B1 (enExample) 1978-11-10
JPS5931260B2 (ja) 1984-08-01
DE2607387A1 (de) 1976-09-30
DE2607387C2 (de) 1985-01-17

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Legal Events

Date Code Title Description
ST Notification of lapse