Digital modules from Mutable Instruments (and related clones + offshoots) use audio-based data transfer for firmware updates.
Interesting way to give the consumer the ability to change the firmware without having to access the back of the module (there's a way to use a serial JTAG adapter as well).
As I understand it, transferring data as audio goes back quite ways, right?
I had a Commodore 64 that could use phillips tape. I'm drawing. blank, but IIRC there were musical instruments (maybe the roland juno 60?) in the 80s that were storing their data as audio, too.
Hey ericlewis - this is cool! Can I ask how you figured it out?!
Doing this for my PO-33 was on my bucket list.
I thought I might have to resort to voltage glitching to get a firmware dump, which is currently beyond my skills.
It's sending sound parameter information (e.g. filter cutoff at 12khz, resonance at 1.6, Q of 0.89) along with note information (e.g. start playing note A4 with velocity 80). You could absolutely use a MIDI CC channel to convey this information. The OP-32 chooses a different route and encodes this into an audio signal so that it can transmit it over the air using the speaker/mic instead of a wireless stack.
Digital modules from Mutable Instruments (and related clones + offshoots) use audio-based data transfer for firmware updates.
Interesting way to give the consumer the ability to change the firmware without having to access the back of the module (there's a way to use a serial JTAG adapter as well).
https://github.com/pichenettes/mutable-dev-environment?tab=r...
As I understand it, transferring data as audio goes back quite ways, right?
I had a Commodore 64 that could use phillips tape. I'm drawing. blank, but IIRC there were musical instruments (maybe the roland juno 60?) in the 80s that were storing their data as audio, too.
Hey ericlewis - this is cool! Can I ask how you figured it out?! Doing this for my PO-33 was on my bucket list. I thought I might have to resort to voltage glitching to get a firmware dump, which is currently beyond my skills.
This reminded me of when people used to transfer games over the radio: https://www.racunalniski-muzej.si/en/40-years-later-a-game-f...
That's amazing. I wonder how accurate is the synth engine?
The synth engine is an implementation of https://soniccharge.com/microtonic Not sure what "accurate" means in your context though?
How closely it replicates microtonic's, would be my assumption
> The PO-32 is not receiving finished drum audio when you transfer a sound or a pattern. It receives structured data:
Wait, isn't this what MIDI is for?
It's sending sound parameter information (e.g. filter cutoff at 12khz, resonance at 1.6, Q of 0.89) along with note information (e.g. start playing note A4 with velocity 80). You could absolutely use a MIDI CC channel to convey this information. The OP-32 chooses a different route and encodes this into an audio signal so that it can transmit it over the air using the speaker/mic instead of a wireless stack.
I bet it sounds like a dial-up tone!
Sure, but being able to share the 'data dump' at the end of a Youtube Video is so much more fun/likely to be used.
https://youtu.be/TLzAyouLQxw?si=mm6goX-cMyEZkwOI&t=102
All it means is that the PO-32 is not a sampler, it's a synthesizer, so it receives a "preset" for the synth rather than an audio sample.