Presentation 1993/10/21
Pitfalls in the short window FFT spectrum
Ken'iti Kido, Takahiko Ono,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) We reported that the magnitude of line spectrum components is exactly estimated by FFT of a short data by concatenating a long null sequence to increase the number of sequence for the FFT.And it is found that there appear very conspicuous zero points in the speech spectrum analyzed by the method.This paper theoretically points out that the interference of two prominent sinusoidal components generates the zero points in the spectrum.The theoretical explanation is verified by the computer simulation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Time window / Spectrum / Zero point / Logarithmic spectrum / FFT
Paper # EA93-54
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Conference Information
Committee EA
Conference Date 1993/10/21(1days)
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Paper Information
Registration To Engineering Acoustics (EA)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Pitfalls in the short window FFT spectrum
Sub Title (in English)
Keyword(1) Time window
Keyword(2) Spectrum
Keyword(3) Zero point
Keyword(4) Logarithmic spectrum
Keyword(5) FFT
1st Author's Name Ken'iti Kido
1st Author's Affiliation Chiba Institute of Technology()
2nd Author's Name Takahiko Ono
2nd Author's Affiliation Ono Sokki Co.Ltd.
Date 1993/10/21
Paper # EA93-54
Volume (vol) vol.93
Number (no) 281
Page pp.pp.-
#Pages 6
Date of Issue