trmix — Streaming partial track mixing.


The trmix opcode takes two inputs containg TRACKS pv streaming signals (as generated, for instance by partials) and mixes them into a single TRACKS stream. Tracks will be mixed up to the available space (defined by the original number of FFT bins in the analysed signals). If the sum of the input tracks exceeds this space, the higher-ordered tracks in the second input will be pruned.


fsig trmix fin1, fin2 


fsig -- output pv stream in TRACKS format

fin1 -- first input pv stream in TRACKS format.

fin2 -- second input pv stream in TRACKS format


Example 470. Example

ain inch 1                  ; input signal
fs1,fsi2 pvsifd ain,2048,512,1 ; ifd analysis
fst  partials fs1,fsi2,.003,1,3,500  ; partial tracking
fslo,fshi trsplit  fst, 1500 ; split partial tracks at 1500 Hz
fscl trscale fshi, 1.15  ; shift the upper tracks
fmix trmix fslo,fscl ; mix the shifted and unshifted tracks
      aout  tradsyn fmix, 1, 1, 500, 1 ; resynthesis of tracks
out aout

The example above shows partial tracking of an ifd-analysis signal, frequency splitting and pitch shifting of the upper part of the spectrum, followed by the remix of the two parts of the spectrum and resynthesis.


Author: Victor Lazzarini;
February 2006

New in Csound5.01