System for estimating sound source direction, apparatus for estimating time delay of signal, and computer program
作者： Mitsunori Mizumachi , 光徳 水町 , フランク ガーピン スーン , K Soong Frank , Satoru Nakamura
DOI:
关键词: Sampling (signal processing) 、 Algorithm 、 Signal 、 Filter (signal processing) 、 Mathematics 、 Waveform 、 Sample (statistics) 、 Linear prediction 、 Interpolation 、 Position (vector)
摘要: PROBLEM TO BE SOLVED: To precisely estimate a sound source direction even in the case of low frequencies. SOLUTION: A system 30 for estimating is provided with sampling section 40 which executes frame data voice signal at first and second positions by using common period; correlation calculation 44 calculates cross-correlation value between these samples an auto-correlation sample position; filter coefficient 48 estimates linear prediction coefficients being used representing summation position, based on value; interpolation processing 52 approximates prescribed waveform having peak position process; decision 54 time delay positions, obtained waveform. COPYRIGHT: (C)2005,JPO&NCIPI
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