User Guide

11
Sample and Hold - This is a circuit with an input for a control voltage and an input for a trigger.
Each time the trigger is fired, the circuit takes the voltage that appears at the input and holds it at
the output until the next time the circuit is triggered.
An LFO is a common way to trigger a sample and hold (or S&H) circuit. When an LFO is applied to
the trigger input, and a random signal such as white noise is applied to the CV input, a random
stepped voltage will appear at the output in time with the each cycle of the LFO. (figure 11)
Glide - Also called portamento, is the slowing down of pitch changes as you play different notes
on the keyboard. In synthesizers, a rate is specified that determines how fast the glide between
notes is.
These terms are basic to understanding analog subtractive synthesis. Should you choose to pursue
a more in depth study of the subject, recommended is the book Analog Synthesis by Reinhard
Smitz, available from Wizoo Publications (www.wizoo.com).