OPTIMAL METHOD OF DATA REDUCTION IN A SPEECH RECOGNITION SYSTEM

摘要

A method and arrangement for reducing a sequence of initial frames into a reduced set of representative frames by combining the initial frames (510) into a plurality of representative frames (514), the combining process including generating a distortion measure (D1-D5) associated with each representative frame (514) and comparing each distortion measure to a distortion threshold. From these representative frames, a set of mutually exclusive frames is determined to minimize the number of representative frames, whereby each representative frame in the set represents a unique set of contiguous initial frames and has an associated distortion measure which does not exceed the distortion threshold.