Patent Document ID: 7478043
Application ID: 10454962

Base Claim:
1. A speech analysis device comprising: a plurality of sensors for receiving a signal segment; a codebook configured to store parameters corresponding to a plurality of hypothesized speech power spectral density functions; and a discriminant function calculation component configured to evaluate a likelihood of at least one of the hypothesized speech power spectral density functions corresponding to the signal segment based on application of a discriminant function evaluated using a preconditioned conjugate gradient (PCG) process configured for block Toeplitz type matrices with a block size corresponding to the number of sensors.

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Claim 6:
6. The device of claim 1 , further comprising: a noise codebook configured to store noise parameters corresponding to a plurality of hypothesized noise power spectral density functions; and a combiner configured to combine at least one of the noise power spectral density functions with at least one of the speech power spectral density functions to obtain a spectral hypothesis.