Allows to immitate musical instruments by generating a wave pattern.
FM 1323 / YAMAHA 3812 / OPL 2
Adlib Music Synthesiser (1987) - Martin Prevel
Sound Blaster (1989) - Sim Wong Hoo (W.H. Sim)
Source of the pictures: Josha Munnik & Eric Oostendorp, The Sound Blaster Book, SYBEX 1994
2 operators: modulator + carrier mono
11 voices: 9 melody and 5 rythmic instruments
In melody mode: 9 melodies, no drums
In rhythmic mode: 6 melodies and 5 drums
OPL 3 (SB Pro v2, SB16, and other recent ISA cards):
4 operators: (modulator + carrier) * 2 - stereo.
20 voices mono: two-operator mode(mono): 15 melodies + 5 drums.
11 voices stereo: four-operator mode(stereo): 6 melodies + 5 drums
OPL synthesis is supported by majority of ISA sound cards.