modulation section造句

The modulation section of this synthesizer features four low-frequency oscillators.
It includes a step-mode sequencer, arpeggiator, a dual octave ( 25-note ) velocity-sensitive keyboard with full-sized keys, and a comprehensive modulation section.
The modulation section of this synthesizer features a low-frequency oscillator with four available waveforms ( triangle, square, sawtooth and random ) which can be routed to VCF cutoff, VCO pitch or VCA amplitude.
It's difficult to find modulation section in a sentence. 用modulation section造句挺难的