Looper's Delight Archive Top (Search)
Date Index
Thread Index
Author Index
Looper's Delight Home
Mailing List Info

[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Date Index][Thread Index][Author Index]

RE: MIDI CC Resolution & RE: Volume Pedals



 
In response to both these threads about MIDI CC resolution and non-linear
expression pedal behaviour, I decided to incorporate following 
functionality
in the GORDIUS product line ( not available yet !) :

The GORDIUS Little Giant is an FCB1010 extension module and/or stand-alone
floorboard with a few inputs for standard expression pedals. In the current
design, these can be used to perform a standard MIDI 7-bit continuous
control. I intend to keep the "incoming" resolution of the expression pedal
down to the standard 7 bit (128 distinct values), because testing confirms
what has been mentioned before: it's hard to use the sweep of an expression
pedal for a finer adjustment than these 7 bits. What's far more important 
is
the resolution and the form of the curve, actually being used for
controlling volume (or any other parameter for that matter). 
So I will look into the possibility to download to the floorboard (over USB
or MIDI) a 14-bit lookup table, which converts the expression pedal sweep
into any customizable non-linear curve, which can be sent using MIDI 
message
MSB/LSB pairs with a combined resolution of 14 bit.

Ideally, together with this functionality, I would need to provide a PC 
tool
which allows you to draw any curve and download it to the floorboard for
immediate use - so you could easily experiment with your expression pedals
and finetune the curve to your personal taste. 
Again : not available yet, but the different threads on this forum make me
believe this might be interesting functionality.

Regards,
Xavier

http://www.gordius.be 



-----Original Message-----
From: Mech [mailto:mech@m3ch.net] 
Sent: dinsdag 6 maart 2007 14:36
To: Loopers-Delight@loopers-delight.com
Subject: Re: OT: MIDI CC Resolution (was: Considering building an ultimate
looper...)

Quoting cpr@musetrap.com:
>
>  You are correct.. I had forgotten about that, and did not continue 
> forth in my reading once I thought I had my answer.. :)

Hey, thanks for the verification that I'd read the spec correctly.  But I'd
say, given the current state of controllers out there, that the original
solution you hit upon is the most compatible, since most pedals can be set
to manipulate Pitch Wheel.  I'd wonder if there are any pedals other than
the ones that we've mentioned that will even merely transmit proper MSB/LSB
Mod Wheel, rather than dumbing it down to MSB only.

>  So, I think, instead of the a new ultimate looper, we need an  
> ultimate midi pedal.. which is not a new topic either.. :)

I heard you there!  The sad thing is that I've actually gone through and
done some design work for a MIDI widget that could fairly easily 
incorporate
something like this.  Problem is, while I can put stuff together on paper, 
I
know crap about programming embedded systems or, for that matter, doing
hardware manufacture in general.  I've played at fabricating some boutique
stompbox 'ideas', but that's a fur piece from what would be required for 
the
circuit of a data project like the one I've in mind.  Ah well....  :P

       --m.



----------------------------------------------------------------
This message was sent using IMP, the Internet Messaging Program.

--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.8/717 - Release Date: 10/03/2007
14:25
 

-- 
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.446 / Virus Database: 268.18.8/717 - Release Date: 10/03/2007
14:25