Multiple encode-decode-re-encode audio files
Thanks for feedback.
Originally Posted by weaver
Actually, a few years ago when MP3 was a hot topic, I gave a short presentation to a pro audio conference about this very issue of quantisation, and the implications of multiple encode-decode-re-encode. What I did - and I think I'll recreate it again - was to use the multi-track audio editor to place side by side (in a vertical stack actually) the recording at each step in the encode-decode cycle. You could see significant changes in the waveform from generation to generation, so that after about three or four cycles it was really markedly different in appearance.
I didn't have the technology then to give a demonstration of how the sound changed by switching quickly from one generation to another, but here on HUG we can do that now. I'll add it to the growing heap of things to present: remind me in a month or so please.
Alan A. Shaw
Harbeth Audio UK