Monowave debugging.... into DSP's

Thu Aug 27 14:17:04 CEST 2009

I hear what you're saying. Although I'm still doing stuff with the arduino
(Arduino Mega for the moment) I never tried audio apps. Will look into that
soon. First I need to get the PCB's done for my MIDI2CV & CLK module. I'm
also working on a 10 track drum sequencer for my 9090. (don't like the
MIDIboxSeq on the 8-oh-8)

The reason why I wanted to go the Soundbite route is that I want to built
some kind of Blacet MiniWave clone/ Monowave OSC section for my modular. I
didn't find a way to do that with an Arduino yet, but apparently some guy
from an arduino forum is working on it now...

About the iPhone apps and such, I don't even have a mobile phone... It's
dedicated hardware for me. 

I wonder what Joost is up to?

Cheers,
ToAd 

@-----Original Message-----
@From: music-bar-bounces at lists.music-bar.org 
@[mailto:music-bar-bounces at lists.music-bar.org] On Behalf Of ibi sum
@Sent: dinsdag 25 augustus 2009 16:09
@To: Music-bar
@Subject: Re: Monowave debugging.... into DSP's
@
@
@Hi Tom!
@
@First of all .. welcome to Arduino DSP hacking!  For sure you 
@should check out the Pocket Piano project of critterguitari .. 
@very definitely the Arduino is capable of making some nice 
@sounds, and you know what .. you'll learn DSP techniques on 
@the Arduino, easier than with the Soundbite, since with the 
@Soundbite you have to also learn Mot56k assembler .. not so 
@fun if you just want to get started.  The Arduino's C-based 
@projects are a bit easier in that regard, and once you've 
@built the shield to give yourself audio capabilities I think 
@you'll agree that its very fun to work on mini-synthesis with 
@the Arduino.  I know Joost has some words to say about this, 
@maybe .. ;)
@
@I have a Soundbite as well and have been doing some synth 
@sessions at Metalab .. we used the Soundbite to build a nice 
@little 6-channel mixer, which was quite easy, and are now 
@working on porting Tonys' DFM-1 filter to it, which is .. not 
@so easy .. but still a good way to make some progress since 
@the DFM-1 code (C, linux-alsa plugin) is very well documented 
@and .. shall I dare say it .. 'sensible'.  So I'll let you 
@know when the code is ready for public consumption by those 
@who have Soundbites to work with.
@
@You might already know from the blogosphere that Paul Maddox 
@has started a project (Qix Synth) to make a Mot56k DSP-based 
@synth using the Freescale imx51 as a central processor .. 
@maybe check with him if you want to get involved.  Even though 
@I was involved from the beginning, I'm not really involved 
@with Qix any more for personal reasons (troll, troll, troll), 
@so this probably means that you would be welcome to join their 
@project .. I know they'd like to have more attention on the 
@DSP side of things, and Paul is certainly going to be digging 
@into the Mot 56k a bit more deeply, I imagine .. check with 
@him if that project is right for you.  Could be that project 
@is perfect for you, especially if you develop something of 
@interest on the Soundbite that could work on the Qix platform, 
@if and when it ever arrives.
@
@From my point of view, though, Mot56k is a tired and 
@*somewhat* irrelevant platform to be writing DSP code for, 
@unless you're going to go the full Kemper Digital route and 
@start making your own hardware to run the code on (Virus) .. 
@more fun is the OMAP-based systems like the TouchBook, iPhone, 
@OpenPandora console, and so on .. since these systems are 
@actually shipping and affordable (Beagleboard.org) it makes a 
@little bit more sense, plus there is the fact that as a 
@platform, OMAP as a DSP system is wide open .. so there's a 
@chance to really establish yourself with some nice synth 
@code/effects plugins and so on.  I'm focusing my efforts, 
@anyway, on OMAP-ARM-based systems as a DSP platform, since 
@having the DSP on the SOC of the rest of the ARM core just 
@makes much more sense than imx51+56kDSP hardware glomming, an 
@approach that might've been clever in the 90's ... Until imx51 
@is available like OMAP 3550 and so on, its a safe bet, anyway 
@.. No more proprietary hardware configurations for me.  Burned 
@on that twice == still got 8 fingers left for fun.
@
@Anyway, have fun, and do check out the Arduino DSP scene .. 
@Joost, pitch in here and tell us what you've been doing lately 
@with your project, I know you want to!  :)
@
@
@On 8/25/09, Tom Adam <tom.adam at thebigear.be> wrote:
@> Hello guys,
@>
@> After another frustrating debugging session on my Monowave X, I've 
@> decided not to put anymore time in it. This is my second 
@project where 
@> I failed to get it finished. (the other one was a Marc Bareille dual 
@> EG, that worked, but I never got it calibrated
@> correctly)
@> Anyway...
@> Since my modular is as good as done (well, all 100U are spoken for, 
@> but alas a few modules don't seem to get much use so I will replace 
@> these in time) I need something new to keep my brain 
@entertained. So I 
@> bought an arduino. Really nice toy, but it stays a toy (like 
@the MFOS 
@> minisynth, it's not a synth!). Recently I ordered a Freescale 
@> Soundbite DSP board that has just arrived. I was able to follow the 
@> factory check instructions so I got everything installed and 
@> operational. So now it's time to get into programming. 
@Unfortunately, 
@> apart of my arduino programming (midi to analog clock & 8 step 
@> sequencer), I have no experience at all. (And as a reference I once 
@> got a 2/20 for a C++ exam during my engineering studies. I 
@had to redo 
@> the test and I got an 18/20 that time, but still, that's 
@like 15 years 
@> ago.) I've been browsing the web for some DSP information, 
@but that's 
@> not sufficient to get me going. I'm now looking for:
@>
@> *	good books,
@> *	forum's,
@> *	other recourses
@>
@> any recommendations? I think I'm getting up to date with the 
@hardware 
@> by reading the manual (520pages), but I'm a little concerned 
@about the 
@> programming itself. This feels a bit like when I started building my 
@> P3. It was my first project ever and I had never touched a soldering 
@> iron before... nice;-)
@>
@> Cheers,
@> ToAd
@> www.thebigear.be
@>
@>
@>
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