Forum to discuss all matters relating to the MPC1000 and MPC2500 operating systems created by 'JJ' (all versions).
User avatar
By le rat Fri May 16, 2014 3:14 pm
Hello all,
In another forum someone asked if there was a way to do real time reverse with the mpc1k (something that could be recordable or something that could be controlled via MIDI). To my knowledge it's not possible. If you know something simplier and more efficient I didn't think of don't hesitate to share please. Here is a workaround to create a "fake" real time reverse effect.

We need two samples :

Image
I only had this one at the root of my CF. I made a random start/end point selection. LOOP has to be ON.


Image
Same sample but the black selection is in REVERSE. LOOP is ON too.


Image
GPE screen


Image
PLAY MODE = NOTE ON and release = 0 to use the layer crossfade switch function.

Image
Aftertouch-Xfade1-2 ON with a value of 100 to prevent too much crossing between the two samples.
When padA01 is pressed and kept pressed slightly the first sample plays.
When padA01 is pushed strongly sample 2 plays.

By doing this it's possible to switch "on the fly" between something that plays in the normal direction and something that plays in reverse. It's recordable. It's not like having a turntable with a reverse function where we'd know the position of the sample but can be useful to give the illusion of a sudden forward/reverse effect. It's still the aftertouch function so it has to be done with care. I recommend using the FULL LEVEL BUTTON too.
User avatar
By le rat Sat May 17, 2014 7:59 am
Thanks for the links mikolo :)

I did a search before but it seems I didn't go far enough :wink:
Anyway it's good to update a topic sometimes.

I'm curious to try the reverse trick with Q link and alt loop.

By the way aftertouch crossfade is not in OS3 right? I didn't see it in the layer menu.
Last edited by le rat on Sat May 17, 2014 8:35 am, edited 1 time in total.
User avatar
By le rat Sat May 17, 2014 8:34 am
I thought about controlling the FOR/REV parameter in GPE with macros for instance.
What's the current state concerning macros? Some people are still doing/ using them? too tedious?
User avatar
By mikolo Sat May 17, 2014 2:53 pm
le rat wrote:Thanks for the links mikolo :)

I did a search before but it seems I didn't go far enough :wink:
Anyway it's good to update a topic sometimes.


yeah for sure.

I havent done either of these for ages, and I don't use OS3 so I'm not sure.
I do use macro's - either MPC out > in or on the PC. I have been wanting to do an external macro option using my iphone but not got very far yet. Not sure how I would approach the for/rev in GPE problem though.
User avatar
By le rat Sat May 17, 2014 3:07 pm
I checked twice and FOR/REV in GPE doesn't work in real time either. It would be a waste of time to do a macro for it I think. It wasn't a good idea.

I tried Q link S.Start + alt loop. It's a cool trick to start a sample in reverse for example. It depends on the sample though. With a long loop or with a long sample with a loop at the end sometimes it starts in forward direction then reverse. So I think it works better with short samples.