Search found 4 matches

by minisystem
Sat Mar 23, 2013 12:28 am
Forum: Synth Shootouts
Topic: Prophet 5 versus Prophet 600
Replies: 37
Views: 17674

Re: Prophet 5 versus Prophet 600

I think it's been covered in another thread, but since the topic of a firmware upgrade for the Prophet 600 has come up, let me point you to this thread over an Anafrog (in french, but Google translate does a half decent job): http://forum.anafrog.com/phpBB/viewtopic.php?f=36&t=10535&sid=73ca61253987...
by minisystem
Thu Jan 31, 2013 10:29 pm
Forum: HELP!
Topic: Upgrading the Z80 in a Prophet 600
Replies: 15
Views: 1789

Re: Upgrading the Z80 in a Prophet 600

Yep. That's me. Things are going well, but slowly. The plan is to eventually open source the entire project (hardware and software) so anyone that wants to contribute will get a chance. Before that happens, I want to get a mostly complete functional version working that reproduces and improves upon ...
by minisystem
Tue Nov 20, 2012 11:36 pm
Forum: General Synthesizers
Topic: Why are Juno-106 and MKS-80 so fast for software envelopes?
Replies: 27
Views: 4044

Re: Why are Juno-106 and MKS-80 so fast for software envelop

So, those 4-bit P600 envelopes are only 16 steps each, what tricks did they use to make the sweep sound totally smooth then? As adamstan said, it is the envelope controls are 4 bits (and yes, probably to save memory) - you only get 16 different attack/decay/release times and sustain levels. The res...
by minisystem
Tue Nov 13, 2012 4:16 pm
Forum: General Synthesizers
Topic: Why are Juno-106 and MKS-80 so fast for software envelopes?
Replies: 27
Views: 4044

Re: Why are Juno-106 and MKS-80 so fast for software envelop

This has been a topic of great interest for me recently. I've been working on a CPU/firmware upgrade for the Prophet 600. One of the aims is to improve the envelope performance. Among early 80s polysynths, the Prophet-600 is notorious for its slow envelopes. I did some analysis of the 600's envelope...