sentences:  Such waveforms can be used as samples alone; can be layered with FM-based Elements, including using them as transients to FM-synthesized main waveforms, similarly to Roland's LA synthesis; or, in a feature unique to the SY/TG series, can be used as modulators for FM operators in place of elementary signals like the sine wave.These technologies, both alone and in combination (the latter giving rise to the name Realtime Convolution and Modulation), can generate rich, layered, multi-timbral sounds, and there are large libraries of patches available for the SY77.Sound sets on floppy disks are available online with patches and presets ranging from emulations of classic synthesizers and ambient pads, to percussion and organ sounds.