Time stretching in Cooledit Pro 2.1

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-- Time stretching in Cooledit Pro 2.1

Posted by Spad on Jun-23-2004 17:55:

Time stretching in Cooledit Pro 2.1

May be a silly question I dunno, but I made a tune in Fruity at 140 bpm and I want to slow it down a bit, but I've got a lot of rendered loops in the Fruity file and I can't be arsed to go through and make them all fit (so that when I slow it down, they'll also slow down). There's a good reason for this, don't ask

If I just did it in Cool Edit after rendering would there be any noticable loss of quality?

Posted by hey cheggy on Jun-23-2004 18:31:

Time stretch isn't what you're after. You want to adjust the pitch by a couple of percent. If it does affect the sound quality, you can try a software dj program with a tempo thingy on it and just play and record back into Cool Edit. Using time stretch will most likely spoil the sound and give it little jumpy sounding bits where it tries to keep the pitch constant.

Posted by JayD on Jun-23-2004 18:54:

If I get what your saying, you mean that you want to lower the bpm? You can do this in fruity (if you didn't already know). Just open the fruity file & lower the bpm from fruity.

JaY

Posted by Spad on Jun-23-2004 19:40:

quote:
Originally posted by JayD
If I get what your saying, you mean that you want to lower the bpm? You can do this in fruity (if you didn't already know). Just open the fruity file & lower the bpm from fruity.

JaY

Hehe yes I did know. If you lower the bpm though, it wont adjust samples unless you "fit" them, which I can't do in this case.

e.g. you have a "swoosh" sample that peaks at the end of the bar, if you lower the bpm it will finish halfway through the next bar unless you fit it.

edit: to clear things up even more, I'm not asking how to lower the bpm of a tune. I don't consider myself an expert producer but I can manage this much I was simply wondering if doing it after rendering would decrease the quality by a noticable amount.

Posted by halo on Jun-23-2004 21:00:

There's two ways of lowering BPM.

First, you mentioned it already, there's timestreching. The program will attempt to fill up the gaps of sthe stretching process with sampled parts from around the gap. This can affect timing and soundquality but works great for stationary and periodic signals.

Second there's pitchshifting without time correcting. Here the programm will insert an interpolated sample here and there. timing will stay exact within a few samples and sound quality only depends on the degree of interpolation (which is quite exact most of the time). Only thing here is that the overall pitch will drop by the percentage you stretch time.

Posted by Spad on Jun-24-2004 02:38:

quote:
Originally posted by halo
There's two ways of lowering BPM.

First, you mentioned it already, there's timestreching. The program will attempt to fill up the gaps of sthe stretching process with sampled parts from around the gap. This can affect timing and soundquality but works great for stationary and periodic signals.

Second there's pitchshifting without time correcting. Here the programm will insert an interpolated sample here and there. timing will stay exact within a few samples and sound quality only depends on the degree of interpolation (which is quite exact most of the time). Only thing here is that the overall pitch will drop by the percentage you stretch time.

Ta