<div dir="auto">The Midiverb was one of my first reverbs. I loved that thing. Used to overdrive the inputs and get some cool sounds. </div><div dir="auto"><br></div><div dir="auto">I'll check your work out</div><div dir="auto"><br></div><div dir="auto">Mike</div><div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Wed, Jul 16, 2025 at 3:39 PM Eric Brombaugh via Synth-diy <<a href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">Back in 2021 Paul Schreiber and I reverse engineered the MIDIVerb I and <br>
although Paul posted a number of Youtube videos to discuss what we'd <br>
learned, we decided at that time to keep the design materials we'd <br>
generated from that effort private. Now that Paul is no longer with us <br>
I've open-sourced the materials on Github:<br>
<br>
<a href="https://github.com/emeb/MIDIVerb_RE" rel="noreferrer" target="_blank">https://github.com/emeb/MIDIVerb_RE</a><br>
<br>
This repository includes schematics, presentation slides, source code <br>
for the disassembler, emulator and compiler, as well as SPICE and <br>
Verilog models of the logic. Anyone at all curious about how this <br>
product democratized the world of algorithmic reverb is invited to take <br>
a look - it's a fascinating glimpse into 1980's minimal TTL design and a <br>
testament to the genius of Alesis founder Keith Barr.<br>
<br>
Eric<br>
<br>
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