Complex sentence: The synthesizer had only a single LFO, which could only moduate the pitch of all voices in a given patch; the LFO had a triangle, square, up ramp sawtooth, and down ramp sawtooth waveforms.
Split into simpler sentences: The synthesizer had but a single LFO, which could only moduate the pitch of all voices in a given patch. The LFO had a triangle, square, up ramp sawtooth, and down ramp sawtooth waveforms.