pvsvoc pvsvoc pvsvoc Combine the spectral envelope of one fsig with the excitation (frequencies) of another. This opcode provides support for cross-synthesis of amplitudes and frequencies. It takes the amplitudes of one input fsig and combines with frequencies from another. It is a spectral version of the well-known channel vocoder. fsig pvsvoc famp, fexc, kdepth, kgain fsig -- output pv stream famp -- input pv stream from which the amplitudes will be extracted fexc -- input pv stream from which the frequencies will be taken kdepth -- depth of effect, affecting how much of the frequencies will be taken from the second fsig: 0, the output is the famp signal, 1 the output is the famp amplitudes and fexc frequencies. kgain -- gain boost/attenuation applied to the output. It is unsafe to use the same f-variable for both input and output of pvs opcodes. Using the same one might lead to undefined behavior on some opcodes. Use a different one on the left and right sides of the opcode. asig in ; get the signal in asyn oscili 16000, 150, 1 ; excitation signal famp pvsanal asig, 1024, 256, 1024, 1 ; analyse in signal fexc pvsanal asyn, 1024, 256, 1024, 1 ; analyse excitation signal ftps pvsvoc famp, fexc, 1, 1 ; cross it atps pvsynth ftps ; synthesise it out atps The example above shows a typical cross-synthesis operation. The input signal (say a vocal sound) is used for its amplitude spectrum. An oscillator with an arbitrary complex waveform produces the excitation signal, giving the vocal sound its pitch. Author: Victor Lazzarini; April 2005 New plugin in version 5 April 2005.