[sdiy] GRP Genesi

[Mike Bryant]

Does it really even need the linear to exp convertor ?  The feedback loop will force it to the correct frequency.  Portamento could just use a different charging function on the capacitor.

________________________________
From: Neil Johnson <neil.johnson71 at gmail.com>
Sent: 05 July 2026 10:26
To: Michael E Caloroso <mec.forumreader at gmail.com>
Cc: Mike Bryant <mbryant at futurehorizons.com>; SYNTH DIY <synth-diy at synth-diy.org>
Subject: Re: [sdiy] GRP Genesi

Michael E Caloroso wrote:
US 3,930,429

Don did a write-up of it here: https://till.com/articles/arp/patents.html#US03930429
Very weird architecture indeed!

Neil
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