Michaelwagner Wrote: 
> A
> Occasionally a DJ will want to speed up a song part way through to make
> the energy higher, or to match the next song that's coming up (beat
> matching). In most of those cases, 10% is plenty (at least in my
> experience ... but then, I'm not the sort of DJ that does beat matching
> much). 
> 

The industry standard is +/- 8% because that's what Technics 1210s can
do. In reality more is useful, but only with pitch correction as a
record played more than about 10% off real speed is very noticable. As
for that pitch correction, well you're right, it's hard to do well.
Even pro performance software (such as Ableton Live) can have trouble,
and provides different algorithms depending on the type of music/sound
being adjusted. Whilst I can go through my sample library testing each
one and choosing the best, that's hardly suitable for general
listening. The best I ever heard was from Pitch & Time, a protools
plugin from Serato that costs around $800 on it's own. In fact, Serato
are pretty damn good at the whole "realtime speed adjustment" thing as
their Scratch Live product does an astonishing job of syncing digital
audio to vinyl turntables. Maybe we should contract them :)


-- 
radish
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