PPT Slide
- LP coefficients are obtained using Durbin’s algorithm
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Realization of the spectral classification
- Performed by vector quantizing the LP coefficients
- Need some distortion measure that ultimately minimizes the MSE in original signal domain, not LP coefficients domain.
- Itakura-Saito measure is such a measure
- For each block, VQ selects the best AR model from a finite number of AR models in the codebook (containing a set of codevectors, each described by a vector of LP coefficients; each defines one class). The spectral classifier finds the best match for each block.