User Guide

Appendix Synthesizer Basics 625
The effect of the resonating filter is comparable to a graphic equalizer with all faders
higher than 660 Hz pulled all the way down, but with only 660 Hz (Cutoff Frequency)
pushed to its maximum position (resonance). The faders for frequencies below 660 Hz
remain in the middle (0 dB).
If you switch off the oscillator signal, a maximum resonance setting results in the self-
oscillation of the filter. It will then generate a sine wave.
Other Oscillator Waveforms
Waveforms (waves) are named sawtooth, square, pulse, or triangular because of their
shape when displayed as an oscillogram (as in the Sample Editor of Logic Pro). This is
the triangular wave:
The triangular wave has few harmonics—which is evident by the fact that is shaped
more like a sine than a sawtooth wave. This wave contains only odd harmonics—which
means no octaves.