Applies a hard clipping threshold to the input signal. The Threshold specifies
the absolute level at which the signal will be clipped. If the absolute value of
the signal (on a sample by sample basis) is greater than the level specified by Threshold
the output will be set to ± Threshold (with the sign determined by the sign of the
input sample).This is equivalent to the hard clipping that occurs when a fixed point signal hits full-scale,
with the addition that you can adjust the level of the clipping point. This is not musically
useful by itself, but it is very useful in combination with other basic processing blocks.