pluck — Produces a naturally decaying plucked string or drum
sound.   Audio output is a naturally decaying plucked string or
drum sound based on the Karplus-Strong algorithms.   ares pluck
kamp, kcps, icps, ifn, imeth [, iparm1] [, iparm2]   icps --
intended pitch value in Hz, used to set up a buffer of 1 cycle
of audio samples which will be smoothed over time by a chosen
decay method. icps normally anticipates the value of kcps, but
may be set artificially high or low to influence the size of the
sample buffer.  ifn -- table number of a stored function used to
initialize the cyclic decay buffer. If ifn = 0, a random
sequence will be used instead.  imeth -- method of natural
decay. There are six, some of which use parameters values that
follow.    1. simple averaging. A simple smoothing process,
uninfluenced by parameter values.    2. stretched averaging. As
above, with smoothing time stretched by a factor of iparm1
(>=1).    3. simple drum. The range from pitch to noise is
controlled by a 'roughness factor'