Resent is a variant of resident where frequency
components are not locked in phase. Rather, each
component is assigned its own speed which may
be negative (implying the evolution of the component 
is read backwards). You have the option of
specifying the initial position of each harmonic
with a single value (so that all harmonics
start at the same place) with the p flag, or
you may specify a diferent starting location
for each harmonic with a function specified
using the P flag. Unless you use the p flag,
resent will look for the default position
function [pfunc] and will complain if it
doesn't find it.

resent:  pvoc data skateboarding
resent   [flags] < floatsams > floatsams
        N:      fft length [1024]
        R:      sampling rate [44100]
        M:      window size in samples [4096]
        I:      interpolation factor in samples [512]
        p:      initial position of every amp/freq pair
        P:      start position function [pfunc]
        v:      frame speed function [vfunc]
        i:      duration of input
        o:      duration of output

