plugin that allows you to modify milliseconds from a second

plugin that allows you to modify milliseconds from a second example: add damage to 50-500 milliseconds every second. The damage can be anything.
Haven’t seen any plugin like that.

Run this code in the “Nyquist Prompt” effect to create a 50 ms burst of noise every 1 second:

(setq damage-length 0.05)
(setq amount 0.5)
(setf damage (abs-env (sum (s-rest 1)(noise damage-length))))
(setq dtable (maketable damage))

(defun add-damage (sig)
  (sum sig (mult amount (hzosc 1 dtable))))

(multichan-expand #'add-damage s)

whats the command for silence…

Try this:

(setq damage-length 0.05)
(setf damage (abs-env (pwlv 0 damage-length 0 damage-length 1 1 1)))
(setq dtable (maketable damage))

(mult s (hzosc 1 dtable))

For more information about Nyquist scripts, see: http://wiki.audacityteam.org/wiki/Nyquist_Plug-ins_Reference
For discussion about Nyquist programming and Nyquist plug-ins, we have a forum board here: http://forum.audacityteam.org/viewforum.php?f=39