GB1303417A - - Google Patents

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Publication number
GB1303417A
GB1303417A GB2079671A GB2079671A GB1303417A GB 1303417 A GB1303417 A GB 1303417A GB 2079671 A GB2079671 A GB 2079671A GB 2079671 A GB2079671 A GB 2079671A GB 1303417 A GB1303417 A GB 1303417A
Authority
GB
United Kingdom
Prior art keywords
filters
parameters
phonemes
store
speech
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
GB2079671A
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 filed Critical
Publication of GB1303417A publication Critical patent/GB1303417A/en
Expired legal-status Critical Current

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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)
  • Complex Calculations (AREA)
  • Auxiliary Devices For Music (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Stereophonic System (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

1303417 Speech recognition SOC LANNIONNAISE D'ELECTRONIQUE 19 April 1971 [30 Jan 1970] 20796/71 Heading G4R [Also in Division H3] A speech analyser employs a set of digital filters to analyse the phonemes in a spoken word. Each data word representative of a portion of the spoken word is applied to selected ones of the filters, the parameters of these selected filters being set so that the filters have a transfer function suitable for the analysis of a particular phoneme. The filters selected, and the parameters, are changed cyclically so that the filters are suitable for the analysis of n phonemes in turn. The parameters are selected according to the speech characteristics of the speaker. The speech waveform is sampled, the samples passing to an analogdigital converter which provides digital signals representing the frequency variation of the successive samples. The signals pass to a store having a capacity equivalent to the duration of about one phoneme. The signals pass from the store to selected digital filters via a switching circuit. In the case of a language having 36 phonemes the switching circuit selects in turn 36 different combinations of filters selected from a group of 16 filters-as described the filters are Lerner filters. In synchronism with the switching of the filters the parameters of the filters are altered under the control of a store containing the parameters required to set the selected filters, for each position of the switch, to present a transfer function suitable for the analysis of a corresponding one of the phonemes. The filters provide digital signals indicative of the phonemes. To accommodate different speakers the contents of the parameter store may be replaced by parameters pertinent to the particular speaker.
GB2079671A 1970-01-30 1971-04-19 Expired GB1303417A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7003429A FR2074813A1 (en) 1970-01-30 1970-01-30

Publications (1)

Publication Number Publication Date
GB1303417A true GB1303417A (en) 1973-01-17

Family

ID=9049881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2079671A Expired GB1303417A (en) 1970-01-30 1971-04-19

Country Status (3)

Country Link
DE (1) DE2104012C3 (en)
FR (1) FR2074813A1 (en)
GB (1) GB1303417A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081607A (en) * 1975-04-02 1978-03-28 Rockwell International Corporation Keyword detection in continuous speech using continuous asynchronous correlation
CN103177723A (en) * 2011-12-20 2013-06-26 上海博泰悦臻电子设备制造有限公司 Speech processing device, vehicle-mounted terminal device and speech processing method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009785A1 (en) * 1980-03-14 1981-10-01 Deutsche Itt Industries Gmbh, 7800 Freiburg SPECTRAL ANALYZER

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1163567B (en) * 1958-10-31 1964-02-20 E H K Kuepfmueller Dr Ing Device for recognizing speech sounds
GB1055371A (en) * 1964-03-06 1967-01-18 Standard Telephones Cables Ltd Apparatus for the recognition of speech
US3466394A (en) * 1966-05-02 1969-09-09 Ibm Voice verification system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4081607A (en) * 1975-04-02 1978-03-28 Rockwell International Corporation Keyword detection in continuous speech using continuous asynchronous correlation
CN103177723A (en) * 2011-12-20 2013-06-26 上海博泰悦臻电子设备制造有限公司 Speech processing device, vehicle-mounted terminal device and speech processing method

Also Published As

Publication number Publication date
FR2074813A1 (en) 1971-10-08
DE2104012C3 (en) 1981-05-27
DE2104012B2 (en) 1980-08-07
DE2104012A1 (en) 1971-08-05

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Legal Events

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