leisuremuffin wrote:even if you just retyped 141.23 in orig tempo and hit return, the phase test will cancel all the way thru.
Good idea. I didn't think of trying that. The result is just as you predicted (and as icedsushi mentioned).
still the statement that warp at orig tempo (exactly) does not effect sound at all is true!
Yes, exactly. Provided you avoid complex mode. I appreciate that you pointed this out. It's a helpful thing to know, and it's counter-intuitive.
I would guess that the render is probably a sample late or early
Bingo. Half-a-sample early, to be precise.
This was my first hunch before, so I did some testing based on this idea, but the testing showed otherwise. So that's why I posted my comment. But my testing must have been careless, because now that I look more carefully (prompted by you), I see that you're right (and that my original hunch was right).
It's great that Live lets you zoom in so far. If you zoom in all the way, one sample (at 44.1khz) becomes about 4mm long (on my screen, a Macbook). Comparing the two clips, the offset was easily visible (especially when I zoomed even more with OS X's Universal Access zoom feature). Even though I couldn't look at the two clips at the same time (I could have used a screenshot technique if I really wanted to nail down the comparison).
The cool thing is that I was able to fix the problem (and induce silence in the phase cancellation test) by moving the start marker about 2mm to the right (in the source clip, while zoomed in the maximum amount). When you examine the scale and do the math, that works out to 0.00004 seconds, which is 1/25,000th of a second, which is roughly half a sample (at 44.1 khz).
I realize something similar (a tiny offset being introduced) was mentioned earlier in one of these threads. I don't remember what the scenario was.
Very harmless and undetectable, unless you go hunting for it with a phase-cancellation test.
Anyway, thanks for helping me figure this out.
