On Mon, 8 Jan 2001, Kent williams wrote: ] In the context of DJ-ing, tone-shifting is what happens when you mix ] two records and new music emerges from the the interference between ] the two tracks. It's a real phenomenon -- if you combine two signals ] they can interfere with each other -- technically 'phase cancellation' ] such that new tones become audible.
This question is a little diverged from this topic, but when talking about phase varience and "interference", I have the following question: Has anyone ever produced any double vinyls of the same track with a1 being a particular track and c1 being the same track, but with the inverted phase wave? When both a1 and c1 are perfectly mixed, the inverted and normal waves should totally cancel each other out, and there should be (in theory) complete silence. Yet, as soon as they are pitch shifted/slightly out of phase, then the tune(s) should jump in. Just wondering, it would be an interesting experiment. Kieran.
