CA2210826A1 - Method of transforming periodic signal using smoothed spectrogram, method of transforming sound using phasing component and method of analyzing signal using optimum interpolation function - Google Patents

Method of transforming periodic signal using smoothed spectrogram, method of transforming sound using phasing component and method of analyzing signal using optimum interpolation function

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Publication number
CA2210826A1
CA2210826A1 CA002210826A CA2210826A CA2210826A1 CA 2210826 A1 CA2210826 A1 CA 2210826A1 CA 002210826 A CA002210826 A CA 002210826A CA 2210826 A CA2210826 A CA 2210826A CA 2210826 A1 CA2210826 A1 CA 2210826A1
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CA
Canada
Prior art keywords
frequency
transforming
signal
interpolation function
spectrogram
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
CA002210826A
Other languages
French (fr)
Other versions
CA2210826C (en
Inventor
Hideki Kawahara
Ikuyo Masuda
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.)
ATR Advanced Telecommunications Research Institute International
Original Assignee
ATR Human Information Processing Research Laboratories Co Inc
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.)
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Application filed by ATR Human Information Processing Research Laboratories Co Inc filed Critical ATR Human Information Processing Research Laboratories Co Inc
Publication of CA2210826A1 publication Critical patent/CA2210826A1/en
Application granted granted Critical
Publication of CA2210826C publication Critical patent/CA2210826C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/04—Time compression or expansion
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/003—Changing voice quality, e.g. pitch or formants
    • G10L21/007—Changing voice quality, e.g. pitch or formants characterised by the process used
    • G10L21/013—Adapting to target pitch
    • G10L2021/0135—Voice conversion or morphing

Abstract

At a smoothing spectrogram calculation portion, a triangular interpolation function having a frequency width twice that of the fundamental frequency of a signal is obtained based on information on the fundamental frequency of the signal. The interpolation function and a spectrum obtained at an adaptive frequency analysis portion are convoluted in the direction of frequency. Then, using a triangular interpolation function having a time length twice that of a fundamental period, the spectrum interpolated in the frequency direction described above is further interpolated in the temporal direction, in order to produce a smoothed spectrogram having the space between grid points on the time-frequency plane filled with the surface of a bilinear function. Using the smoothed spectrogram, a speech sound is transformed. Therefore, the influence of periodicity in the frequency direction and the temporal direction can be reduced.
CA002210826A 1996-07-30 1997-07-17 Method of transforming periodic signal using smoothed spectrogram, method of transforming sound using phasing component and method of analyzing signal using optimum interpolation function Expired - Fee Related CA2210826C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP8-200845 1996-07-30
JP20084596 1996-07-30
JP34424796A JP3266819B2 (en) 1996-07-30 1996-12-24 Periodic signal conversion method, sound conversion method, and signal analysis method
JP8-344247 1996-12-24

Publications (2)

Publication Number Publication Date
CA2210826A1 true CA2210826A1 (en) 1998-01-30
CA2210826C CA2210826C (en) 2001-11-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002210826A Expired - Fee Related CA2210826C (en) 1996-07-30 1997-07-17 Method of transforming periodic signal using smoothed spectrogram, method of transforming sound using phasing component and method of analyzing signal using optimum interpolation function

Country Status (5)

Country Link
US (1) US6115684A (en)
EP (1) EP0822538B1 (en)
JP (1) JP3266819B2 (en)
CA (1) CA2210826C (en)
DE (1) DE69700084T2 (en)

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CN117705091B (en) * 2024-02-05 2024-04-16 中国空气动力研究与发展中心高速空气动力研究所 High-precision attitude measurement method based on wide-range quartz flexible accelerometer

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CN117705091B (en) * 2024-02-05 2024-04-16 中国空气动力研究与发展中心高速空气动力研究所 High-precision attitude measurement method based on wide-range quartz flexible accelerometer

Also Published As

Publication number Publication date
DE69700084D1 (en) 1999-02-11
DE69700084T2 (en) 1999-06-10
EP0822538B1 (en) 1998-12-30
CA2210826C (en) 2001-11-06
US6115684A (en) 2000-09-05
JPH1097287A (en) 1998-04-14
JP3266819B2 (en) 2002-03-18
EP0822538A1 (en) 1998-02-04

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