Archive for February, 2014

Poppin’ Caps

Monday, February 24th, 2014

The FPGA graphics engine (started around the last blog post from 2012) now has screen capture support! Here are a couple action shots from recent synth work:

Poking Around

Anti-aliased scope plotting!

Wobble

 Spectrogram!

You may wonder why the color scheme is so hideously fantastic. That comes from the loving care that went into picking the perfect colors and definitely is not just because this is an early prototype where the color scheme has been ignored…

Noise Sweeps

Monday, February 17th, 2014

Click here for audio

I’ve been deep in hardware development for quite a while now, so the blog and my responsiveness to e-mails have suffered. The good news is that something new is almost ready to show. This audio clip comes from a POKEY engine running inside an FPGA. The sweeping is the sound of modulating the POKEY clock across several octaves. I’m also varying the pitch in the registers of the POKEY engine, which is what causes the sudden changes in timbre.