GB2004443A - Voice codification system - Google Patents

Voice codification system

Info

Publication number
GB2004443A
GB2004443A GB7832650A GB7832650A GB2004443A GB 2004443 A GB2004443 A GB 2004443A GB 7832650 A GB7832650 A GB 7832650A GB 7832650 A GB7832650 A GB 7832650A GB 2004443 A GB2004443 A GB 2004443A
Authority
GB
United Kingdom
Prior art keywords
phoneme
sections
repeated
signal
intensity
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
GB7832650A
Other versions
GB2004443B (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.)
Center of Scientific and Applied Research Ltd
Original Assignee
Center of Scientific and Applied Research Ltd
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 Center of Scientific and Applied Research Ltd filed Critical Center of Scientific and Applied Research Ltd
Publication of GB2004443A publication Critical patent/GB2004443A/en
Application granted granted Critical
Publication of GB2004443B publication Critical patent/GB2004443B/en
Expired 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
    • G10L19/0018—Speech coding using phonetic or linguistical decoding of the source; Reconstruction using text-to-speech synthesis
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

In a voice coding system each vowel or consonant sound, or phoneme, is divided into repeated similar sections and the analog electrical equivalent of one of those sections is transmitted. If repetitive sections cannot be distinguished, e.g. during unvoiced consonants, a signal is derived from a section of predetermined length. The signal is transmitted in digital form together with signals indicating the number of sections in the phoneme, the intensity of the phoneme, the intensity of each of the repeated sections of the phoneme, any pre-equalisation applied to the speech, and phoneme change. On reception the analog electric equivalent signal is recovered, stored, level controlled, equalised, and repeated the appropriate number of times until a phoneme change is indicated.
GB7832650A 1977-08-09 1978-08-08 Voice codification system Expired GB2004443B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GR54119A GR58359B (en) 1977-08-09 1977-08-09 Voice codification system

Publications (2)

Publication Number Publication Date
GB2004443A true GB2004443A (en) 1979-03-28
GB2004443B GB2004443B (en) 1982-07-21

Family

ID=10927866

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7832650A Expired GB2004443B (en) 1977-08-09 1978-08-08 Voice codification system

Country Status (4)

Country Link
CH (1) CH639218A5 (en)
DE (1) DE2834751A1 (en)
GB (1) GB2004443B (en)
GR (1) GR58359B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125259A (en) * 1982-08-04 1984-02-29 Secr Defence Digital coding of speech
EP1610300A1 (en) * 2003-03-28 2005-12-28 Kabushiki Kaisha Kenwood Speech signal compression device, speech signal compression method, and program

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1487540C3 (en) * 1966-12-01 1981-06-25 Heinz Dipl.-Phys. 7801 Umkirch Kusch Process for the analysis and synthesis of electrical acoustic signals

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125259A (en) * 1982-08-04 1984-02-29 Secr Defence Digital coding of speech
EP1610300A1 (en) * 2003-03-28 2005-12-28 Kabushiki Kaisha Kenwood Speech signal compression device, speech signal compression method, and program
EP1610300A4 (en) * 2003-03-28 2007-02-21 Kenwood Corp Speech signal compression device, speech signal compression method, and program
CN100570709C (en) * 2003-03-28 2009-12-16 株式会社建伍 Speech signal compression device, speech signal compression method and program
US7653540B2 (en) 2003-03-28 2010-01-26 Kabushiki Kaisha Kenwood Speech signal compression device, speech signal compression method, and program

Also Published As

Publication number Publication date
GR58359B (en) 1977-10-03
GB2004443B (en) 1982-07-21
DE2834751C2 (en) 1988-05-19
CH639218A5 (en) 1983-10-31
DE2834751A1 (en) 1979-02-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee