GB1334177A - Vocoder excitation system - Google Patents

Vocoder excitation system

Info

Publication number
GB1334177A
GB1334177A GB1995771*[A GB1334177DA GB1334177A GB 1334177 A GB1334177 A GB 1334177A GB 1334177D A GB1334177D A GB 1334177DA GB 1334177 A GB1334177 A GB 1334177A
Authority
GB
United Kingdom
Prior art keywords
signal
vocoder
output
excitation
frequency
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
GB1995771*[A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB1334177A publication Critical patent/GB1334177A/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
    • G10L19/02—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 using spectral analysis, e.g. transform vocoders or subband vocoders

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Analogue/Digital Conversion (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Devices For Supply Of Signal Current (AREA)
GB1995771*[A 1971-06-10 1971-06-10 Vocoder excitation system Expired GB1334177A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1995771 1971-06-10

Publications (1)

Publication Number Publication Date
GB1334177A true GB1334177A (en) 1973-10-17

Family

ID=10137952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1995771*[A Expired GB1334177A (en) 1971-06-10 1971-06-10 Vocoder excitation system

Country Status (4)

Country Link
US (1) US3825685A (enExample)
FR (1) FR2141363A5 (enExample)
GB (1) GB1334177A (enExample)
NL (1) NL7207374A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5113449A (en) * 1982-08-16 1992-05-12 Texas Instruments Incorporated Method and apparatus for altering voice characteristics of synthesized speech
JP4173940B2 (ja) * 1999-03-05 2008-10-29 松下電器産業株式会社 音声符号化装置及び音声符号化方法
JP4179268B2 (ja) * 2004-11-25 2008-11-12 カシオ計算機株式会社 データ合成装置およびデータ合成処理のプログラム
AU2021232744B2 (en) * 2021-04-26 2022-12-08 Nantong University Lexicon learning-based heliumspeech unscrambling method in saturation diving

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012098A (en) * 1941-11-22 1961-12-05 Bell Telephone Labor Inc Telephone privacy
US3071652A (en) * 1959-05-08 1963-01-01 Bell Telephone Labor Inc Time domain vocoder
US3377428A (en) * 1960-12-29 1968-04-09 Ibm Voiced sound detector circuits and systems
US3176073A (en) * 1961-12-04 1965-03-30 Gen Dynamics Corp Buzz-hiss decision system for a channel vocoder
US3418662A (en) * 1965-03-31 1968-12-31 Nat Res Dev Prosthetic hand with improved control system for activation by electromyogram signals
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
US3573374A (en) * 1968-01-25 1971-04-06 Philco Ford Corp Formant vocoder utilizing resonator damping
NL6910496A (enExample) * 1969-07-09 1971-01-12
US3624302A (en) * 1969-10-29 1971-11-30 Bell Telephone Labor Inc Speech analysis and synthesis by the use of the linear prediction of a speech wave

Also Published As

Publication number Publication date
FR2141363A5 (enExample) 1973-01-19
NL7207374A (enExample) 1972-12-12
US3825685A (en) 1974-07-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee