Patent ID: 8073690
Filing Date: 2011-12-06
Classification: G10L

Abstract:
1. A speech recognition apparatus for recognizing speech from sound received from outside, the apparatus comprising: at least two sound detectors for detecting sound; means for localizing a sound source based on the sound and for determining a direction of the sound source; a first means for separating a speech from the sound based on the determined direction of the sound source and generating a result of the separation, wherein the result comprises a value indicative of a reliability of the result, said first means for separating a speech comprising means for identifying frequency sub-bands of the speech whose phase difference and/or sound intensity difference is within a pass-band, wherein the pass-band is based on a resolution relative to a sound source direction being higher in a front direction but lower in a periphery; means for generating a mask according to the reliability of the result; means for extracting features of the sound; and means for recognizing speech from the sound by applying the mask to the extracted features, wherein said means for generating a mask comprises: