@realnc: thanks for the link but it's a custom patch for doom. Nothing to do with the original opl3 gen midi sound bank
@yawetaG: A patch is not linked to the wav source nor to the sound unit type. All expander/synthesizer have patch/sound whose are defined by there customizable parameters. (On a SC-880, you can even store 256 user sound(patch)) A lot of sound till the sc-55 use the same waveform and tweaked parameters to achieve different patch(sound). The difference is in the name of the device after the designation. (Opl2 Synthesizer, SC55 Expander)
Regarding the MT-32 it's a synthesizer because the pcm waveform used in the unit are attack waveform except for a very few and the drums ones, all of them must be combined with an oscillator to finish the sound. At least every device which can create it's own sound after the defined ones can be considered as synthesizer. Even the SC-55 can be considered as a synthesizer, it's just sold as an expander, because of the lack of user memory area, but with midi sysex to recall modified sound that do the trick. To finish everything with a sampled,generated waveform is a synthesizer because digital is synthetic...
No one has an idea of where can be found a useable rip of the opl3 general midi sound bank ?
Thanks in advance,
Have a good day,