FRAME ERASURE CONCEALMENT TECHNIQUE FOR A BITSTREAM-BASED FEATURE EXTRACTOR

摘要

A frame erasure concealment technique for a bitstream-based feature extractors in a speech recognition system particularly suited for use in a wireless communication system operates to “delete” each frame in which an erasure is declared. The deletions thus reduce the length of the observation sequence, but have been found to provide for sufficient speech recognition based on both single word and “string” tests of the deletion technique.

主权项

1. A method comprising:
measuring, via a processor, a distance between line spectrum pairs of adjacent frames representative of speech signals; and deleting a frame of the adjacent frames in response to determining that the distance is one of less than and equal to a steady-state threshold.