Description: Wav format input-output audio signal and extracting the sound signal spectrum after interpolation (resampling source 8 times), and can be played using the play function audition, such as play (nearest), play (ori) with ori original sound, ups interpolation quality, downs and extracted three kinds of sound quality resampling the following five types of resampling audition with nearest, linear, spline, pchip, cubic, interpolation algorithm described interp1 function can be used to abolish the comment " Gaussian white noise" , " frequency noise " of the sound signal to the noise
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waveread.m
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