Forum to discuss all matters relating to the MPC1000 and MPC2500 operating systems created by 'JJ' (all versions).
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By NearTao Fri Mar 13, 2009 12:34 pm
Forgive me if everybody knows this, but I just figured this out and it blew my mind...

I had been struggling trying to figure out how to sample a take (master/analogue/digital) to get it to loop perfectly by using the record mode. Long story short, this is a really bad idea. It works for getting samples in quickly, but it is next to impossible to either enter a time value or start/stop a sample and get it to loop properly in an audio track without a lot of sample start/end tweaking to get the sample to loop properly. I won't bother to go into all the mess that I was doing before, and will instead explain the proper way to record a loop in JJOS2XL (this may work in OS2 as well).

The first thing you'll want to do is to have some content you want to sample that is sequenced (probably by your MPC). For my case I ended up letting the drums/bass/melody all play on the main outs. You could just as easily sequence some external gear and record from your analogue/digital ins.

Once you are happy with what you have playing, you'll want to select an unused track. Change the track from DRUM to AUDIO. If you highlight AUDIO with your cursor you can then hit the window button and select a few options for the take such as the take's name (default TAKE01), the take's input source (MAIN/AUDIO/DIGITAL), etc. The important part here is to set the correct input source and give it a usable name so you know what it is later.

From here, this is the part I constantly was tripping up on. In order to record the audio into the audio track you need to first HOLD the REC button, and then press PLAY START or PLAY. I'm always in the habit of hitting REC OVERDUB, and (at least for now) AUDIO tracks don't support overdub recording. Would be dope if they did... but that's another post.

At any rate. After recording the audio track you'll have a "perfect" loop sampled and good to go in your audio track. I used scare quotes here, because anybody who has recorded loops before will know that for a proper loop you actually need to record at least double your original loop because if the last note trails past the end due to echo/reverb it won't be reflected at the start of your loop, and will sound a little jarring when it loops around. I'll leave it as an exercise for the reader to figure out exactly the steps to create a perfect loop, but I'd suggest something like playing the sequence twice and recording it three times longer than necessary, then you'd chop the sample into three sections, intro -> loop -> outro.

So you have your recorded audio track loop. From here you can hop into TRIM mode. For my loop I was then able to chop it into 32 slices and then I used JJOS to create a new program. With this new program you can now really mix up your song to create a stutter effect, breakdown or buildup really quickly.

Hope this helps somebody out, peace!