return to tranceaddict TranceAddict Forums Archive > DJing / Production / Promotion > Production Studio

 
How to change bpm of a loop.
View this Thread in Original format
costizzle
how would i change the bpm of a loop or song. i know they have vst's or something where you load the loop and it changes the bpm but i dont know what programs they are..any suggestions? for mac perferably.
atxbigballer1
Are you talking about time stretching? You can do it in any dj or DAW software!
Stef
The easiest thing you can do is do it in the internal sampler of your DAW, and what would that be?
cybernetica
if you dont like the timestretching effect (I find that usually when stretching more than 110% of the original length, stretched drums start to sound weird and lack punch) - try Propellerheads ReCycle, there you can turn your drumloops into .rex files where you can set the points of the individual hits. So if you slow down your tune, the individual hits wont be timestretched, but the timing will stay the same. I've become a huge fan of rex files lately.
costizzle
ya i want to time stretch it. il try recycle out. but i was watching the future music video with benny benassi and he loaded a sample and just typed in a number and time stretched it really simply, does anyone know what plug in that could be?
Darkarbiter
quote:
Originally posted by costizzle
ya i want to time stretch it. il try recycle out. but i was watching the future music video with benny benassi and he loaded a sample and just typed in a number and time stretched it really simply, does anyone know what plug in that could be?

Re cycle doesn't time stretch... it cuts and re arranges things in a loop.

So basically if things look like
Time overall....................................................
kicks ---- ---- ---- ---- ----
it instead looks like: at 33% less tempo, or whatever
---- ---- ---- ---- ----
The only thing that has been cut is the silence in between each individual kick, thereby reducing the tempo without changing the pitch of the sounds or doing any fancey time stretching effects which as mentioned don't sound perfect if used in semi extremes in pitch bending terms (i.e. more then like 5-10%)
Sonic_c
quote:
Originally posted by cybernetica
(I find that usually when stretching more than 110% of the original length, stretched drums start to sound Different and Interesting )


Fixed lol Only messin but stretching to double the original length can make interesting variations used a lot in D&B not that i like it just the guy that taught me that makes it.
palm
quote:
Originally posted by atxbigballer1
Are you talking about time stretching? You can do it in any dj or DAW software!

not reason. which i hope will be fixed in the next version.
cryophonik
quote:
Originally posted by costizzle
ya i want to time stretch it. il try recycle out. but i was watching the future music video with benny benassi and he loaded a sample and just typed in a number and time stretched it really simply, does anyone know what plug in that could be?


Sony SoundForge, Steinberg Wavelab, and Audacity (free) all have this ability - you essentially just type in the original bpm, followed by the desired bpm, and it does the rest, although in some cases (e.g., SoundForge) you have a variety of time-stretching algorithms to choose from as well.
Lolo
timestretching here we go.

the content of my post is more or less based on a bt interview in a 2001 issue of the US keyboard magazine. Or was it Sound on Sound in the same period?? I don't know anymore....

Timestretching on its own sounds at times very very bad. You can have some software that feature the best algorithm on earth that it'll still sound bad. So what are we supposed to do in order to get some clean timestreching? It all depends on the recorded material, of course, but most of the time what we obtain with consequent timestretching is a degradation of the attacks as well as the queues of every single note, percussion, whatever...

The best thing to do in order to avoid this: stretch the queues, not the attacks!!

Let's take a one bar loop you want to timestrech from 120 down to 80 bpm in logic pro. You have to make sure that the material is perfectly spot-on, so that every single event is EXACTLY on time, which is mostly the case with electronic beats, but you'd better check FIRST.

In logic, put the resolution to 1/16th select the scissors and hold option while clicking on your loop's second 16th note (use for example division snap instead of intelligent for a second!!). It cuts your one bar loop into 16ths. Set the tempo down to 80bpm. Now you will hear gaps between your slices, just like in Recycle.

Now put the reso to 1/32 and cut (without holding option, no use in this case) every single slice in two parts again. Select the second part and stretch it (click and hold option, then move the mouse) so it almost reaches the next slice. Do it with the next queue part, again and again until all slices match your needs.

Once you get used to this technique and can get fast enough, you can easily edit any kind of material such as pianos and guitars.

This technique can also be easily translated to any other software, except for cubase for me, as I don't know that one very well, and sonar, as I'm a mac guy, and this although I used to work with cakewalk 10 years ago.

I don't know if this is clear as a text, so I might consider doing some decent tutorial if you really need it.
CLICK TO RETURN TO TOP OF PAGE
 
Privacy Statement