addsilw(wave, f, at = "end", choose = FALSE, d = NULL,
plot = FALSE, output = "matrix", ...)wave (in Hz). Does not need to be specified if embedded in wave."start", "middle" or "end".TRUE the point where silence will
be added into wave2 (=at) can be graphically chosen with a cursor.TRUE returns an oscillographic plot
of wave with the new silence section (by default TRUE)."matrix", "Wave", "Sample", "audioSample" or "ts".oscillo graphical parameters.plot is FALSE, a new wave is returned. The class
of the returned object is set with the argument output.oscillo, cutw,deletew,
fadew,pastew, mutew,revw,
zapsilw