Abstract
The pitch will be inaccurate if you have used your piano for a long time,so pitch correction is one of the most important part in Piano routine maintenance. For the average family,it is difficult to identify the correctness of the sound corrected by ear,and it is expensive to buy a professional piano correction tool.In today of very strong Information Technology ,why do we not use computer to instead our ears?This article explains how to prepare a set of PC audio-baced sound comfirmation system in MATLAB7.0 according to Piano Music Theory, Audio Signal Characteristics and Signal Processing Methods, to achieve the functions of sound signal import,play and spectrum graphics.It will give a evaluation of similarity to reflect the accuracy of pitch by comparing import sound signal and the standard sound signal.The system will bring great help to piano lovers.
