Studies of Resolution for Sound Source Location Using a Microphone array

• Main Authors: Tsung-Hsien Li, 李宗憲
• Other Authors: Chia-Ming Chang
• Format: Others
• Language: en_US
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/51242969441979773924

碩士 === 大同大學 === 資訊工程研究所 === 91 === In this thesis, we discuss the correlation between frequency, and position of sound signal and interval between microphones. For a given requirement and signal characteristics, we try to provide some guide to line to make optimum specification then get the best resolution. For the sound source localization, the delay of arrival (DOA) technique has been proposed few decades. The technique detects the signal wave delay in microphone pairs and use the delay time to compute the sound source direction.The cross-power spectrum phase (CSP) analysis and first wavefront detected method are usually used in DOA technique. The CSP analysis use the signal's phase different of microphone pair to calculate the sound source direction. The wavefront detected method is obtained the results by detecting the first wavefront. In the experiment, we adjust the sound's signal frequency, angle and interval between two microphones. The results would exhibit the interactive among these factors. From these results, some guide lines to decide some parameters of sound source location are given.