The trlowest opcode takes an input containg TRACKS pv streaming signals (as generated, for instance by partials) and outputs only the lowest track. In addition it outputs two k-rate signals, corresponding to the frequency and amplitude of the lowest track signal.
fsig -- output pv stream in TRACKS format
kfr -- frequency (in Hz) of the lowest-frequency track
kamp -- amplitude of the lowest-frequency track
fin -- input pv stream in TRACKS format.
kscal -- amplitude scaling of output.
Example 389. 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 flow,kfr,kamp trlowest fst,1 ; lowest freq-track aout tradsyn flow, 1, 1, 1, 1 ; resynthesis of lowest frequency out aout
The example above shows partial tracking of an ifd-analysis signal, extraction of the lowest frequency and resynthesis.