The operation of this opcode is identical to that of pvcross (q.v.), except in using fsigs rather than analysis files, and the absence of spectral envelope preservation. The amplitudes from fsrc are applied to fdest, using scale factors kamp1 and kamp2 respectively. kamp1 and kamp2 must not exceed the range 0 to 1.
With this opcode, cross-synthesis can be performed on real-time audio input, by using pvsanal to generate fsrc and fdest. These must have the same format.