Stereo oscilloscope and spectrum analyzer

[dx1987]

I need to implement a stereo oscilloscope and spectrum analyzer using C or matlab.. I am familiar with the basic commands regarding wav files in matlab. i also created a very simple music synthesizer.

regarding the stereo oscilloscope, how do you get to display the sound wave in real time?

what i was thinking to do is to have someone speak in a microphone, and this is sampled every for example 12.5ms (determined by sampling freq ) and each point is plotted and the sequence repeats.

 

[wildman]

You are going to get aliasing at the higher frequencies. The voice spectrum is from 0 to about 3000 Hz which following the Nyquist criteria means that you will have to sample at 6000 Hz.