[sdiy] The Chameleon Guitar

[Tom Wiltshire]

I have to agree with Eric on this one. My Soundbite board is  
currently sat on the shelf too. This is not because it's not a good  
board - it is; 4 stereo ins and outs, 24 bit processing at 400MHz,  
etc etc..something like that anyway. The problem is exactly what Eric  
identifies. You need to learn your way around a load of new software  
to program it (and this is not some neat and tidy single tool, but a  
group of applications. Once you've done that and you're in, you've  
got to learn how to deal with a DSP. All in all, it's a pretty big job.

I'd love the power that something like Soundbite would give me. I  
could write some killer digital sound generation stuff with it. I  
vaguely had it in mind to use it as the heart of four hybrid voice  
modules. Each stereo out would then go to individual analog  
processing on a per-voice basis. This is such a cracking idea that  
I'll probably have to get to it at some point. Like he said, "Fun if  
you're into it but I had other things to do".

T.


On 8 Apr 2009, at 17:01, Eric Brombaugh wrote:

> Csaba Zvekan wrote:
>> This is really cool idea . Are there any other projects with the  
>> SoundBite board?  I happened to have that board too as some of you  
>> as well. I was wondering if we can get more out of the SoundBite  
>> board than just the demo tones and passthrough .
>> Has anybody digged some more into the DSP56371.
>> Maybe we can set up some sort of a repository and share our  
>> codes . Kind of like Line6 is doing with their DSP based ToneCore  
>> stampbox .
>> Always interested in making some noisy boxes :)
>
> The guy at Freescale who spearheaded the SoundBite board was pretty  
> enthusiastic and posted a lot of support material on the Freescale  
> site. I think Paul Maddox was pretty serious about trying to do  
> some things with it for a while and set up a forum for it that  
> seems to have been shut off now.
>
> The biggest problem with the SoundBite board was the fairly complex  
> development environment (Eclipse + OpenOCD + GCC) and a lack of  
> standard I/O devices. The DSP chip has some GPIO and a host SPI  
> port, but no ADCs, UARTs, etc. It would make a good peripheral  
> under the control of another chip for MIDI processing and/or CVs &  
> knobs, but that requires addition hardware work.
>
> Although the development tools are C-based, using the DSP  
> capability of the processor requires getting down into the assembly  
> language. Not impossible, but you do have to learn yet another  
> processor architecture.
>
> Overall it's a pretty big pile of stuff to absorb. Fun if you're  
> into it but I had other things to do. :)
>
> Eric
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