Ring Modulator ============== Ring modulation takes two separate inputted signals and multiplies those signals. A ring modulator will typically take the input signal from an instrument and mix it with a second signal generated by an internal oscillator which you can vary the frequency of. Moderate frequencies generate eerie, bell-like tones that sound awesome beneath oceans of reverb. Higher frequencies produce ear-shredding shrieks. Meanwhile, ultra-low frequencies (under 10Hz, say) can create pretty, pulsing tremolo effects. But you always need to be careful when you adjust them, as the volume can get very quickly out of control.