fdspeck wrote:Kevin Nolan wrote:A possibility re. GS programs could be to enquire from Yamaha UK whther it is possible to get hold of original GS1 and GS2 sound design charts to program a DX1 as it also has polyphonic aftertouch; or alternatively to find out if the GS soundset was ever made for DX1/DX5 or even DX7.
I think you can't do a good emulation of GS-1/2 patches on any DX-synth because they don't have the right algorithm. GS-1/2 had cross-feedback between the two 2-op chains and my guess would be that feedback was used a lot because of the otherwise simple 2-op structure.
On the Oasys you can create this algorithm and perfect GS-1/2 emulations should be possible (with monophonic afertouch, though). I also would be very intersted in these sounds (if they were modeled after a real GS-1).
-Frank-
Looking over the GS1 algorithm you point to at
http://members.tripod.com/kmi9000/kmi_GS_algorithm.jpg
i'd honestly say it is possible to emulate the GS1 library using even a DX1 Mk1; let alone a DX1, DX5 or DX7 Mk2 (which all allow two FM sounds to constitute a program).
Although there is extra feedback from Modulator 2 to modulator 1, it is a very simple algorithm. Actually, you could look at this algorithm differently - as a modulator 1 feeding carrier 1 and Modulator 2 (with just one ‘cross’ feedback from modulator 2 to modulator 1). I think many of the original DX7 algorithms could closely emulate this - algorithm 14 for example. I don't think the 'cross feedback' provides fundamentally new possibilities beyond those available on the DX range.
While I can't claim that the GS library was developed for the DX range, I remember an article by Dave Bristow where he viewed the DX1 as a programmable GS1. That suggests to me that he at least saw the possibility.
I've found a point of contact to Dave Bristow on a Yamaha page and have sent him a message; so we'll see if he replies.
Actually, I have a data cartridge for the DX1 developed by with assistance from TOTO. I find that combining two of presets - especially mallets and flutes (especially from the TOTO collection); provides what sound to me to be very GS like sounds from some of the classic albums using that instrument. So I think that extremely GS like patches can already be achieved using the availabel DX patch archive, programmed with two FM sounds per MOD-7 program and useful velocity and aftertouch programming applied.
Whatever the differences between the DX and GS - the OASYS (as you indicate) can completely emulate those algorithms; so this is interesting and exciting.
Kevin
Hi Peter and Guido,
...
. Anyway there is one Piano sound in the current list of MOD7 sounds that was programmed by a gentleman named Ski ( Peter Schwartz ). The program is called Contemporary Pianist SW2 - patch C021. There is something about this program that i feel if it was tweeked by an FM geneous it could be designed to sound incredibly realistic. Maybe? 
