ar wgbow kamp, kfreq, kpres, krat, kvibf, kvamp, ifn[, iminfreq]
iminfreq - lowest frequency at which the instrument will play.
If it is omitted it is taken to be the same as the initial kfreq.
kamp - Amplitude of note.
kfreq - Frequency of note played.
kpres - a parameter controlling the pressure of the bow on the string. Values should be about 3. The useful range is approximately 1 to 5.
krat - the position of the bow along the string. Usual playing is about 0.127236. The suggested range is 0.025 to 0.23.
kvibf - frequency of vibrato in Hertz. Suggested range is 0 to 12
kvamp - amplitude of the vibrato
kv linseg 0, 0.5, 0, 1, 1, p3-0.5, 1 a1 wgbow 31129.60, 440, 3.0, 0.127236, 6.12723, kv*0.01, 1 out a1