Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Reexamination Certificate
2007-08-07
2010-12-21
Wozniak, James S (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
C704S203000, C704S204000, C704S233000, C704S262000, C381S066000, C381S063000, C381S071120
Reexamination Certificate
active
07856353
ABSTRACT:
Method for processing speech signal data. A speech signal is divided into frames. Each frame is characterized by a frame number T representing a unique interval of time. Each speech signal is characterized by a power spectrum with respect to frame T and frequency band ω. A speech segment and a reverberation segment of the speech signal is determined. L filter coefficients W(k) (k=1, 2, . . . , L) respectively corresponding to L frames immediately preceding frame T are computed such that the L filter coefficients minimize a function Φ that is a linear combination of sum of squares of a residual speech power in the reverberation segment and a sum of squares of a subtracted speech power in the speech segment. The computed L filter coefficients are stored within storage media of the computing apparatus.
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Fukuda Takashi
Ichikawa Osamu
Nishimura Masafumi
Guerra-Erazo Edgar
Nuance Communications Inc.
Wolf Greenfield & Sacks P.C.
Wozniak James S
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