Collecting and Processing of Audio Signal with MATLAB and Soundcard

MATLAB can drive soundcard to collect and process the audio signal smartly with its huge function of data analyzing and processing.The method of collecting and processing of audio signal with soundcard and MATLAB software is discussed in this paper.A case of using audio signal to detect the soundboard of ancient qin is combined to prove that,this method have been widely applicated in the engineering fields for its simpleness and conveniency.