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EP1164577A3 - Method and apparatus for reproducing speech signals - Google Patents

Method and apparatus for reproducing speech signalsDownload PDF

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Publication number
EP1164577A3
EP1164577A3EP01121724AEP01121724AEP1164577A3EP 1164577 A3EP1164577 A3EP 1164577A3EP 01121724 AEP01121724 AEP 01121724AEP 01121724 AEP01121724 AEP 01121724AEP 1164577 A3EP1164577 A3EP 1164577A3
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EP
European Patent Office
Prior art keywords
speech
unvoiced
voiced
unit
encoded parameters
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.)
Withdrawn
Application number
EP01121724A
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German (de)
French (fr)
Other versions
EP1164577A2 (en
Inventor
Masayuki Nishiguchi
Kazuyuki Iijima
Jun Matsumoto
Shiro Omori
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.)
Sony Corp
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Sony Corp
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Filing date
Publication date
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP96307741Aexternal-prioritypatent/EP0770987B1/en
Publication of EP1164577A2publicationCriticalpatent/EP1164577A2/en
Publication of EP1164577A3publicationCriticalpatent/EP1164577A3/en
Withdrawnlegal-statusCriticalCurrent

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Abstract

A method for reproducing speech signals at acontrolled speed whereby rate conversion of the time axismay be facilitated, and can be realized by a simplifiedstructure based on the encoded speech data withoutchanging the phoneme. With the speech reproducing method,an encoding unit 2 discriminates whether an input speechsignal is voiced or unvoiced. Based on the results ofdiscrimination, the encoding unit 2 performs sinusoidalsynthesis and encoding for a signal portion found to bevoiced, while performing vector quantization by closed-loopsearch for an optimum vector for a portion found tobe unvoiced using an analysis-by-synthesis method, inorder to find encoded parameters. The decoding unit 4compands the time axis of the encoded parameters obtainedevery pre-set frames at a period modification unit 3 formodifying the output period of the parameters forcreating modified encoded parameters associated withdifferent time points corresponding to the pre-setframes. A speech synthesis unit 6 synthesizes the voicedspeech portion and the unvoiced speech portion based onthe modified encoded parameters.
EP01121724A1995-10-261996-10-25Method and apparatus for reproducing speech signalsWithdrawnEP1164577A3 (en)

Applications Claiming Priority (5)

Application NumberPriority DateFiling DateTitle
JP279410951995-10-26
JP279410951995-10-26
JP280672951995-10-27
JP280672951995-10-27
EP96307741AEP0770987B1 (en)1995-10-261996-10-25Method and apparatus for reproducing speech signals, method and apparatus for decoding the speech, method and apparatus for synthesizing the speech and portable radio terminal apparatus

Related Parent Applications (1)

Application NumberTitlePriority DateFiling Date
EP96307741ADivisionEP0770987B1 (en)1995-10-261996-10-25Method and apparatus for reproducing speech signals, method and apparatus for decoding the speech, method and apparatus for synthesizing the speech and portable radio terminal apparatus

Publications (2)

Publication NumberPublication Date
EP1164577A2 EP1164577A2 (en)2001-12-19
EP1164577A3true EP1164577A3 (en)2002-01-09

Family

ID=27237803

Family Applications (1)

Application NumberTitlePriority DateFiling Date
EP01121724AWithdrawnEP1164577A3 (en)1995-10-261996-10-25Method and apparatus for reproducing speech signals

Country Status (1)

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EP (1)EP1164577A3 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US4435832A (en)*1979-10-011984-03-06Hitachi, Ltd.Speech synthesizer having speech time stretch and compression functions
EP0279451A2 (en)*1987-02-201988-08-24Fujitsu LimitedSpeech coding transmission equipment

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US4435832A (en)*1979-10-011984-03-06Hitachi, Ltd.Speech synthesizer having speech time stretch and compression functions
EP0279451A2 (en)*1987-02-201988-08-24Fujitsu LimitedSpeech coding transmission equipment

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
NISHIGUCHI M ET AL: "HARMONIC AND NOISE CODING OF LPC RESIDUALS WITH CLASSIFIED VECTOR QUANTIZATION", PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP). DETROIT, MAY 9 - 12, 1995. SPEECH, NEW YORK, IEEE, US, vol. 1, 9 May 1995 (1995-05-09), pages 484 - 487, XP000658036, ISBN: 0-7803-2432-3*
QUATIERI T F ET AL: "SHAPE INVARIANT TIME-SCALE AND PITCH MODIFICATION OF SPEECH", IEEE TRANSACTIONS ON SIGNAL PROCESSING, IEEE, INC. NEW YORK, US, vol. 40, no. 3, 1 March 1992 (1992-03-01), pages 497 - 510, XP000294868, ISSN: 1053-587X*

Also Published As

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EP1164577A2 (en)2001-12-19

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