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Buy the dsp-G1 DSP chip for DIY projects

...and how to do so...

Moderators: justin3am, Hink, Moderators (Main)

KVRist
 
71 posts since 21 Aug, 2009, from Sweden
 

Postby janostman; Tue Apr 29, 2014 4:40 am Buy the dsp-G1 DSP chip for DIY projects

I'm now selling the preprogrammed DSP chip from the dsp-G1 synth.
5 voice, 3 DCO, 24db DCF, 1 LFO and 2 ENV.

The 8-pin DIP chip only requires 3.3v, 2 capacitors and a resistor to operate.
115Kbaud TTL-serial input for control and an audio line output.

Stick it to an Arduino or anything with a serial port to build your own dsp-synth.

You can find it here: http://igg.me/at/dsp-G1
Last edited by janostman on Tue Aug 26, 2014 12:01 am, edited 1 time in total.
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Developer and proud owner of http://www.dspsynth.eu
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KVRAF
 
4551 posts since 13 Jan, 2003, from Kent, UK
 

Postby GaryG; Wed May 07, 2014 4:22 am Re: Buy the dsp-G1 DSP chip for DIY projects

That's neat, I can think of a few applications for a chip like that.
()_()
(O.o)
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KVRian
 
730 posts since 10 Oct, 2002, from Barcelona
   

Postby wikter; Sat Jun 28, 2014 4:38 pm Re: Buy the dsp-G1 DSP chip for DIY projects

Anyone got one of these??
KVRist
 
71 posts since 21 Aug, 2009, from Sweden
 

Postby janostman; Wed Aug 13, 2014 12:48 am Re: Buy the dsp-G1 DSP chip for DIY projects

It can now be bought here:

http://www.dspsynth.eu

/Jan
___________________________________________________
Developer and proud owner of http://www.dspsynth.eu
KVRist
 
71 posts since 21 Aug, 2009, from Sweden
 

Postby janostman; Mon Aug 25, 2014 12:37 pm Re: Buy the dsp-G1 DSP chip for DIY projects

The chip is very easy to use with it's TTL-MIDI input and 44.1KHz 16-bit delta-sigma audio output.

It's a 15 DCO design, structured as 5-voices with 3-DCO each, 24dB resonant LPF, 2 ENV's and 1 LFO.

It features 19 MIDI-CC controlled parameters.

I'm currently designing an Arduino shield with a built in control knob surface and even an analog 5v interface for use with analog gear.

It won't hurt checking it out and it does sound great.

http://www.youtube.com/watch?v=9JRRHPEwaV0

http://www.youtube.com/watch?v=w-IUmPD-LuI

http://www.youtube.com/watch?v=dLucvhlYfVU

dsp-G1 kit.jpg


dsp-G1 schematic.jpg


dsp struct.jpg


This is the MIDI-CC parameter list:

CUTOFF = CC#74
RESONANCE = CC#71
FILTER A = CC#82
FILTER D = CC#83
FILTER S = CC#28
FILTER R = CC#29
FILTER ENV M = CC#81
FILTER LFO M = CC#01

WAVEFORM = CC#76
WRAP = CC#04
RANGE = CC#21
DETUNE = CC#93
OSCENV A = CC#73
OSCENV D = CC#75
OSCENV S = CC#31
OSCENV R = CC#72

MASTERVOL = CC#07
LFORATE = CC#16
LFOWAVE = CC#20

You can front it with an ATmega chip or an Arduino and the parameters can be controlled by analog voltages compatible with analog sequencers and CV/Gate.
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___________________________________________________
Developer and proud owner of http://www.dspsynth.eu
KVRist
 
71 posts since 21 Aug, 2009, from Sweden
 

Postby janostman; Tue Aug 26, 2014 12:04 pm Re: Buy the dsp-G1 DSP chip for DIY projects

This the dsp-Gshield that I'm designing.

Just about the coolest shield you can stick into an Arduino board at the moment.

It has the dsp-G1 chip with MIDI connected to the Arduino TX-pin and a 12-knob control surface right on the shield.

Even better, it has a 5v analog bus for the parameters + CV/Gate for the note input.

If your into modular, this one is your friend and don't need MIDI.

But it needs one Arduino Uno to host it.

Gshield proto2.jpg
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Developer and proud owner of http://www.dspsynth.eu

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