Forum to discuss all matters relating to the MPC1000 and MPC2500 operating systems created by 'JJ' (all versions).
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By NearTao Sun Mar 20, 2011 8:05 pm
Sovereign wrote:That and the polyphony is what ruined the JJ OS for me, which in turn killed all desire to use the 1k/2500 since they have to have JJ to be of value.


I'll admit to being gone for about 6-8 months... but did I miss a change in the way polyphony works in OS2XL?
By Sovereign Sun Mar 20, 2011 8:32 pm
NearTao wrote:
Sovereign wrote:That and the polyphony is what ruined the JJ OS for me, which in turn killed all desire to use the 1k/2500 since they have to have JJ to be of value.


I'll admit to being gone for about 6-8 months... but did I miss a change in the way polyphony works in OS2XL?


It's the lack of.
The 32 was ok until he added instrument tracks and some sequencer tricks.
You have to use things as mono and resample etc to stay below the 32 limit.
Also when you started to have instrument tracks, a lot of modulation, effects and such going on in your sequence things respond slow when you select them.
I had things get so sluggish sometimes that you would have to wait a couple of measures for the sequencer to stop after you pushed the stop button.
Yes there are several ways to reduce the CPU drain using workarounds, but to me it kills the value of what JJ has added.
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By maara Mon Mar 21, 2011 8:42 am
Sovereign wrote:It's the lack of.
The 32 was ok until he added instrument tracks and some sequencer tricks.
You have to use things as mono and resample etc to stay below the 32 limit.
Also when you started to have instrument tracks, a lot of modulation, effects and such going on in your sequence things respond slow when you select them.
I had things get so sluggish sometimes that you would have to wait a couple of measures for the sequencer to stop after you pushed the stop button.
Yes there are several ways to reduce the CPU drain using workarounds, but to me it kills the value of what JJ has added.



Hmmm thats the reason why I recently bought the s6000 to stand next to (to be more specific - under) my mpc and do all that dirty work like instruments etc.
Now I use my mpc for chopped loops and some of the drums but most of the sampled material is from the s6000 (which also have much better sound quality)
I don't think is a problem of JJ OS - this os gave us only new possibilities and its up to us how we will deal with them...
By dtaa pla muk Tue Mar 22, 2011 9:46 pm
i just figured out multiplexing and capacitive touch sensing on arduino
this is what laptop touchpads do - sense the capacitance of the human body and read out values in response
i can now create a buttonless interface for the MPC1000XL
By beach_break Tue Mar 22, 2011 11:00 pm
Nym wrote:i just figured out multiplexing and capacitive touch sensing on arduino
this is what laptop touchpads do - sense the capacitance of the human body and read out values in response
i can now create a buttonless interface for the MPC1000XL



sounds brilliant.
so with the arduino, you connect directly to the mpc? that is, you don't have to go via a computer running say MAX?

is there an arduino model that's particularly suited to working with touchpads?
sorry for all the questions, i'm a noob with arduino.
By dtaa pla muk Tue Mar 22, 2011 11:15 pm
with arduino, you could connect directly from the arduino to the MPC via midi and jj's new feature.
however, in order to maximize the 2 midi inputs i have i'd route it to my computer first, through reaper, and then back out to one of the mpc w/ other controller data. this probably doesn't count as "without other software" but it's a bonus because i can use reaper to manipulate, translate and record navigation button presses on my mpc. think about it - recordable mode changes, perhaps automatically changing your tracks for you as you play different pgms in a live set.

http://www.arduino.cc/playground/Main/CapSense

i'm not using touchpads, that's the best part. with capacitive sensing, you can use anything that's metal, as long as it's got the proper resistor pairing. i'm actually using a taken-apart, 1st generation mpc1000 pads - Image

cover the metal coil with tape, plastic, rubber...and then touch the surface material, and the receiving pin sends a value. i was testing this earlier with the 1k OG pad and it was awesome - sensing my finger touching 2 layers of scotch tape taped over the copper coil on contact at 900K ohms. more surface area yielded more value.

no moving parts, nothing to break. properly grounded and conditioned, this could be an extremely sensitive and quick-reacting touch surface.

btw, don't get caught up in looking at different arduino models.
just go here:
http://shop.moderndevice.com/products/rbbb-kit

and get that fellow or a kit for 5 + the usb bubb to program them.
saves a lot of money. when i start making midi controllers for people i'll be using these. the only downside is that you need the bubb to program it instead of a direct usb cable, and also it doesn' fit shields (but shields aren't all that anyway)
By beach_break Wed Mar 23, 2011 3:14 am
thanks so much for the detailed reply. i ordered one RBBB Kit to start with (great to find a place that ships worldwide). the projects are piling up on the work desk.
By dtaa pla muk Fri Mar 25, 2011 4:06 pm
this feature is awesome. just uploaded the OS today, finally.
i have my computer keyboard set to change my MPC tracks
F1-F8 change the current track to 1-8
F9+(F1 thru F8) change the current track to 9-16
these keys also reroute my midi controllers to the current channel
workflow steroids. i'm gonna get used to to this real, real quick
also thinking about buying one of those usb number pads to use as a numeric controller
Image
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By distortedtekno Fri Mar 25, 2011 6:41 pm
Nym wrote:this feature is awesome. just uploaded the OS today, finally.
i have my computer keyboard set to change my MPC tracks
F1-F8 change the current track to 1-8
F9+(F1 thru F8) change the current track to 9-16
these keys also reroute my midi controllers to the current channel
workflow steroids. i'm gonna get used to to this real, real quick
also thinking about buying one of those usb number pads to use as a numeric controller
Image

considering you're using your mpc alongside reaper, that looks very handy.