GB1155422A - Speech Recognition - Google Patents

Speech Recognition

Info

Publication number
GB1155422A
GB1155422A GB3623365A GB3623365A GB1155422A GB 1155422 A GB1155422 A GB 1155422A GB 3623365 A GB3623365 A GB 3623365A GB 3623365 A GB3623365 A GB 3623365A GB 1155422 A GB1155422 A GB 1155422A
Authority
GB
United Kingdom
Prior art keywords
speech
time interval
waveform
speech recognition
zero
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
GB3623365A
Inventor
Simon Hugh Lavington
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB3623365A priority Critical patent/GB1155422A/en
Publication of GB1155422A publication Critical patent/GB1155422A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00

Abstract

1,155,422. Speech recognition. NATIONAL RESEARCH DEVELOPMENT CORP. 18 Nov., 1966 [24 Aug., 1965], No.36233/65. Heading G4R. Apparatus for analysing complex waveforms, e.g. speech, counts the numbers of (a) zerocrossings and (b) positions of zero time-derivative of the waveform, in a predetermined time interval. Count (b) in conjunction with the difference of the counts (b)-(a) are particularly significant for speech recognition. The maximum positive amplitude of the speech waveform in the time interval and the distances between successive zero-crossings are also used. The time interval may be fixed or vary with the fundamental pitch period of the speech obtained by counting the number of positions of zero time-derivative between a peak in the waveform envelope and the first preceding zerocrossing.
GB3623365A 1965-08-24 1965-08-24 Speech Recognition Expired GB1155422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3623365A GB1155422A (en) 1965-08-24 1965-08-24 Speech Recognition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3623365A GB1155422A (en) 1965-08-24 1965-08-24 Speech Recognition

Publications (1)

Publication Number Publication Date
GB1155422A true GB1155422A (en) 1969-06-18

Family

ID=10386212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3623365A Expired GB1155422A (en) 1965-08-24 1965-08-24 Speech Recognition

Country Status (1)

Country Link
GB (1) GB1155422A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760108A (en) * 1971-09-30 1973-09-18 Tetrachord Corp Speech diagnostic and therapeutic apparatus including means for measuring the speech intensity and fundamental frequency
EP0004759A2 (en) * 1978-04-04 1979-10-17 National Research Development Corporation Methods and apparatus for encoding and constructing signals
FR2425689A1 (en) * 1978-05-08 1979-12-07 Marley John SPEECH REPRESENTATIVE SIGNALS TRAINING APPARATUS
WO1980002767A1 (en) * 1979-05-28 1980-12-11 Univ Melbourne Speech processor
EP0065829A1 (en) * 1981-05-01 1982-12-01 Figgie International Inc. Speech recognition system
EP0141497A1 (en) * 1983-09-01 1985-05-15 Reginald Alfred King Voice recognition
US4761815A (en) * 1981-05-01 1988-08-02 Figgie International, Inc. Speech recognition system based on word state duration and/or weight
CN117690439A (en) * 2024-01-31 2024-03-12 国网安徽省电力有限公司合肥供电公司 Speech recognition semantic understanding method and system based on marketing scene

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760108A (en) * 1971-09-30 1973-09-18 Tetrachord Corp Speech diagnostic and therapeutic apparatus including means for measuring the speech intensity and fundamental frequency
EP0004759A2 (en) * 1978-04-04 1979-10-17 National Research Development Corporation Methods and apparatus for encoding and constructing signals
EP0004759A3 (en) * 1978-04-04 1979-10-31 Harold William Gosling Methods and apparatus for encoding and constructing signals
US4382160A (en) 1978-04-04 1983-05-03 National Research Development Corporation Methods and apparatus for encoding and constructing signals
FR2425689A1 (en) * 1978-05-08 1979-12-07 Marley John SPEECH REPRESENTATIVE SIGNALS TRAINING APPARATUS
WO1980002767A1 (en) * 1979-05-28 1980-12-11 Univ Melbourne Speech processor
US4441202A (en) * 1979-05-28 1984-04-03 The University Of Melbourne Speech processor
EP0065829A1 (en) * 1981-05-01 1982-12-01 Figgie International Inc. Speech recognition system
US4761815A (en) * 1981-05-01 1988-08-02 Figgie International, Inc. Speech recognition system based on word state duration and/or weight
EP0141497A1 (en) * 1983-09-01 1985-05-15 Reginald Alfred King Voice recognition
CN117690439A (en) * 2024-01-31 2024-03-12 国网安徽省电力有限公司合肥供电公司 Speech recognition semantic understanding method and system based on marketing scene
CN117690439B (en) * 2024-01-31 2024-04-16 国网安徽省电力有限公司合肥供电公司 Speech recognition semantic understanding method and system based on marketing scene

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