clear — Zeroes a list of audio signals.
avar1, avar2, avar3, ... -- signals to be zeroed
clear sets every sample of each of the given audio signals to zero when it is performed. This is equivalent to writing avarN = 0 in the orchestra for each of the specified variables. Typically, clear is used with global variables that combine multiple signals from different sources and change with each k-pass (performance loop) through all of the active instrument instances. After the final usage of such a variable and before the next k-pass, it is necessary to clear the variable so that it does not add the next cycle's signals to the previous result. clear is especially useful in combination with vincr (variable increment) and they are intended to be used together with file output opcodes such as fout.