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MIDI channelizer/filter???

Posted: Tue Feb 05, 2008 2:43 am
by celebutante
Hiya.

We're planning on using my MIDI'd Prophet-5 along with a Jup-8 in our live set. These will be MIDI'd to external effects to automate the effects patch changes

Because the Jup-8's Encore MIDI kit doesn't trasmit prg changes (weird, I know), we're using the P-5 to change the FX AND the patches on the Jup-8. The problem is that when the Jup-8 receives prg changes from the Prophet, it also receives note on/off which is bad bad bad.

We need a device to filter out the note on/off data, or at least rechannelize it while retaning the program changes on MIDI ch 1. The only thing I've found that will do this is a MIDI Solutions box that costs $129 (ouch).

Anyone have any other ideas? Anatek used to make a Pocket Filter, but I'm not sure if it'll do what we need, and can't find one anyway.

Any ideas? Any DIY things?

thanks!

Mitchell

Posted: Tue Feb 05, 2008 10:23 am
by mistercooper
iirc, ucapps's midibox diy platform might have some midi filter designs.

Posted: Tue Feb 05, 2008 4:58 pm
by stillearning
Check out the Yamaha MEP4. It's a 1u rack mount box that does quite a bit more than you're looking for, but it's nice to have around.

Re: MIDI channelizer/filter???

Posted: Tue Feb 05, 2008 7:09 pm
by meatballfulton
You have both a Prophet and a JP8, worth a few grand and you're moaning about spending $129 to fix your problem? :shock:

Posted: Tue Feb 05, 2008 9:20 pm
by pricklyrobot

Re: MIDI channelizer/filter???

Posted: Wed Feb 06, 2008 9:23 pm
by celebutante
meatballfulton wrote:You have both a Prophet and a JP8, worth a few grand and you're moaning about spending $129 to fix your problem? :shock:
Point taken, but...

1. Hey I'm poor!

2. I got a REALLY good deal on the P-5 ($1000).... it needed some TLC.

3. The Jupiter isn't mine (it's my keyboard player's).

And besides, it's such a simple thing that we need to do (filter out note data on one channel), I'd rather spend as little as possible for something so dumb.

Thanks to everyone else for the advice... more research!

Mitchell

Posted: Wed Feb 06, 2008 9:46 pm
by th0mas
midibox.org. build a CORE module, connect it to a cheap AC/DC wall wart, and with a little bit of C coding you'd be done. The forum people are nice as long as you aren't afraid to read a bit first. Probably cost you about $40 if you buy the package, or $20ish if you just get a PIC, the MIDI circuit, and the power supply circuit..

Posted: Thu Feb 07, 2008 12:23 pm
by Altitude
Why dont you just get a midi foot controller?

Something like this

Posted: Thu Feb 07, 2008 11:31 pm
by celebutante
Altitude wrote:Why dont you just get a midi foot controller?

Something like this
If we used a foot controller strictly to switch fx, he'd still have to do all the program changes on the synths simultaneously, which wouldn't leave a lot of time/brainpower for actually hitting the black and white thingees (he's frequently juggling two synth parts that have nothing to do with each other, and the prg changes are pretty hairtrigger quick). One of the reasons we were happy about using the P-5 as the "master program change" controller is that changing programs on the Jupiter 8 always requires pressing two buttons, and they're really touchy making it very easy to flub. (Roland must have figured this out, because the Jup 6 and Junos are "one button" prg changes, just like the Prophet).

We talked about using something like a Ground Control footpedal controller to send program changes to both synths and the fx, but I was against it because they're big, stages are often small, and we're currently using an Apex stand which is a bad combo with a big foot controller.

The other reason is that I don't want him staring at his feet all night. Makes for bad presentation (we aren't a stoic prog rock experience, we're a dancey synth band).

The easy answer to ALL of this is to forget about crazy vintage synths and use Apple MainStage, but we're trying to keep the dream alive with the old monsters :>) (I already have almost everything set up in there).

mitchell

Posted: Thu Feb 07, 2008 11:54 pm
by Altitude
I think a good portion of those controllers allow for more than one message to be sent with the click of a button..

Posted: Fri Feb 08, 2008 10:17 am
by celebutante
Altitude wrote:I think a good portion of those controllers allow for more than one message to be sent with the click of a button..
The Ground Control is the only one I'm aware of that's fully progammable to send different messages on different MIDI channels. But they're pricey, and like I said in the previous post, won't fit very well in front of an Apex stand, and it will have the effect of causing my keyboardist to stare at his feet.

I think we're going to go with a Digital Music MX8 which will allow us to filter the note on/off data, as well as do prg change mapping so we don't have to do a lot of patch duplication in the Jupiter.