@Markiyan Hirnyk I did. Couldn't find anything.

@Markiyan Hirnyk Thanks! So do you know how to retrieve these informations (Amplitude/Time) and put them in some sort of table, array ? (I'm very sorry if it's told in SignalPlot, but I've never used Maple before and english is not my mother tongue)

@Christopher2222 That's it, just needed to load and resave the audio file with audacity, thanks a lot !