Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate
2006-10-24
2006-10-24
Opsasnick, Michael N. (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
C704S207000
Reexamination Certificate
active
07127389
ABSTRACT:
A speech decoder and a segment aligner are provided in the present invention. The speech decoder may include a spectrum reconstructor operative to reconstruct the spectrum of a speech segment from the amplitude envelope of the spectrum of said speech segment and pitch information, a phase combiner operative to reconstruct the complex spectrum of the speech segment from the reconstructed spectrum, phase information describing the speech segment, and pitch information describing the speech segment. The speech decoder may further include a delay operative to store a complex spectrum of a previous speech segment; and a segment aligner operative to determine the relative offset between the complex spectrum of the speech segment and the complex spectrum of the previous speech segment, align the position of the first pitch excitation of the current speech segment to the last pitch excitation of the previous speech segment; and to apply a time shift and a complex Hilbert filter to said complex spectra, wherein the segment aligner is operative to cross-correlate the complex spectra asC(τ)=∑n=0NFnG_mⅇ-2πinτ,m=⌊npGpF+0.5⌋,where Fnand Gmare the computed complex magnitude of the pitch harmonics n and m of the current and previous spectra respectively, and pFand pGare their corresponding pitch periods.
REFERENCES:
patent: 4885790 (1989-12-01), McAulay et al.
patent: 5195166 (1993-03-01), Hardwick et al.
patent: 5686683 (1997-11-01), Freed
patent: 5832437 (1998-11-01), Nishiguchi et al.
patent: 5884253 (1999-03-01), Kleijn
patent: 5903866 (1999-05-01), Shoham
patent: 6014617 (2000-01-01), Kawahara
patent: 6475245 (2002-11-01), Gersho et al.
patent: 6996523 (2006-02-01), Bhaskar et al.
Chazan Dan
Kons Zvi
Kaufman Stephen C.
Opsasnick Michael N.
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