Hi Robert,
if you provide an IR I could tell you what algo and which params are used.
Cheers
---
http://dsp.guru
On Sat, 24 Apr 2021 22:08:53 +0800, Robert-André Vettel
<ra.vet...@live.de> wrote:
Dear all,
since I'm going to get into quite a bit of detail, I'll start with the
tl;dr first :D
has anyone experience with electronic logic circuits and might help me
to analyse >and understand some schematics?
is it possible to port an existing digital circuit (consisting of a
clock, timing signals, >counters, latches and memory read/writes) into
Faust?
Now for the long version:
In 2019 I was fortunate enough to acquire an old Ursa Major Stargate 323
hardware >reverb from the institute of musicology at the JGU Mainz
(thanks Albert!). Ursa Major >was founded by Christopher Moore and is
mostly know for the Space Station Delay, >which some industry
professionals still swear by. The Stargate 323 Reverb is an >evolution
of the Space Station delay algorithms. Since those reverbs are very rare
and >no official digital emulations exist, I want to try and help
keeping this piece of reverb >history alive .
To be clear: I'm talking about straight up reverse-engineering here. If
the moderators >think this is something that shouldn't be discussed
publicly on this list, please let me >know. The Ursa Major brand was
sold to AKG in 1986 and no products have been >released under this brand
since then. As far as I know all related patents have expired.
>Christopher Moore previously continued working under the brand name
Seven Woods >Audio, but the website is not available anymore and the
domain name is now for sale. I >also want to make this project
completely open source and do not have any commercial >intentions.
While the reverb algorithms are proprietary, the digital circuit design
is fairly simple by >today's standards. Ursa Major was a small company
and inside is just a lot of 8bit >EPROMS, Latches, Counters etc. all
clocked by an 8Mhz ceramic oscillator. No CPU or >proprietary silicon
whatsoever. Because the entire circuit structure is completely >humanly
readable, my idea is to just "port" the digital circuit into modern
software >instead of trying to approximate the algorithms. So far I have
made quite some >progress in understanding and analysing the digital
circuit components. The official >service manual is incredibly detailed
and I have also dumped the contents of all >eeproms. But I'm just a
hobbyist and if I want this project to succeed, I'm going to need >help.
Which brings me back to my initial questions and this mailing list :)
I'm happy to hear any questions/ideas/etc.!
Best,
Robert
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