Consider loading an
mp3 audio file
Now we get an object that looks like
One can see a picture of the sound fluctuations, which means that Mathematica knows how to access the raw values of the wave. Now, I would like to take small bits of the waveform at certain times (let's say, from second
40.0 to second
40.3), sum up its absolute value squared and divide by the time length to get the power of the signal at this time. Can I do this in Mathematica?