Apparatus and Method for extracting noise-robust the speech recognition vector sharing the preprocessing step used in speech coding

摘要

Provided are an apparatus for extracting a speech feature vector in a distributed speech recognition terminal and a method thereof. The apparatus includes a speech coding module for transmitting coded speech signals into outside through a speech traffic channel in a speech coding mode; a speech feature vector extracting module for transmitting extracted speech feature vectors into outside in a speech recognition mode; and a speech coding/recognition pre-processing block for attenuating a noise in speech signals received from the outside, wherein speech signals inputted into the speech coding module and the speech feature vector extracting module are pre-processed in the speech coding/recognition preprocessing block.