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Entries found for search: waveform

percussion waveform : A percussion waveform is generated through the random noise generator of a synthesizer. If a second-order (two-pole) filter that has a high Q (low loss) is used after the noise generator, it simulates a drum. If repeated at a predetermined rate, it is called a repeat-percussion waveform, which constitutes the basic rhythm section of a synthesizer.

waveform : The waveform of a signal is a two-dimensional graph of the instantaneous amplitude versus time. See spectrum. (1) A signal, either sampled (digitally recorded) or periodic, being generated by an oscillator. Each waveform has its own distinctive timbre. Also called a sample. (2) The graphic representation of this signal, as on a computer screen. See sound synthesis, Appendix C.

waveform modulation : A voltage-controlled change in the timbre of a note or entire samplepatch, independent of the he pitch or frequency normally ybeing designated by the keystrokes. See sound synthesis, Appendix C.

waveform selection : The waveform selection parameter allows the choice of the shape of the signal generated by the LFO. Typical shapes include sine, triangle (tri), square, and sawtooth (saw). The two most common waveforms used for vibrato or tremolo are the sine and triangle. The square wave is used for trills, and saw for special effects. Some LFOs offer a random (also called sample-and-hold) waveform, useful for "computer" sounds. See sound synthesis, Appendix C.

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