Accumulating transformations for hierarchical linear...

Details Accumulating transformations for hierarchical linear... Accumulating transformations for hierarchical linear...

2006-08-08

2006-08-08

Dorvil, Richemond (Department: 2654)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S256200

Reexamination Certificate

active

07089183

ABSTRACT:
A new iterative hierarchical linear regression method for generating a set of linear transforms to adapt HMM speech models to a new environment for improved speech recognition is disclosed. The method determines a new set of linear transforms at an iterative step by Estimate-Maximize (EM) estimation, and then combines the new set of linear transforms with the prior set of linear transforms to form a new merged set of linear transforms. An iterative step may include realignment of adaptation speech data to the adapted HMM models to further improve speech recognition performance.

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