This patch is an example one taken from this keyboard's manual, it changes the string ensemble into a brighter, more bell like sound. Parameters:
Spectrum- 7
Modulation- 5
Attack- 8
Decay- 3
Release- 3
Vibrato- 5
Volume- 5
And here are the parameters for the sine wave voice to have it sound like a thing from the OPL3 sound card:
Spectrum- 2
Modulation- 8
Attack- 8
Decay- 2
Release- 2
Vibrato- 0