These are sort of wierd pvoc reverb
modules. Use at own risk.

shingles:  frequency sensitive reverberation
shingles   [flags] < floatsams > floatsams
        N:      fft length [1024]
        R:      sampling rate [44100]
        M:      window size in samples [4096]
        D:      decimation factor in samples [512]
        I:      interpolation factor in samples [512]
        d:      decay function [decay]
        t:      threshold generator [.005]
        g:      gain for dry signal [1.]
        G:      gain for reverb [1.]
        q:      maintain phase coherence
        s:      synthesize analysis input

d - decay function : this function contains
a decay multiplier for each bin: the higher
the value, the longer the decay time.
values >= 1.0 are only asking for trouble.
This can create a frequency-sensitive
reverberation.

freeze is a more primitive version
of shingles: it merely holds a frame
amplitude for awhile, then jumps to
the next one. This has been known to
introduce discontinuities into the
signal. You have been warned.

freeze:  arbitrary frame echo
freeze   [flags] < floatsams > floatsams
        N:      fft length [1024]
        R:      sampling rate [44100]
        M:      window size in samples [4096]
        D:      decimation factor in samples [512]
        I:      interpolation factor in samples [512]
        f:      minimum freeze [.1]
        F:      minimum freeze [.5]
        g:      synthesis threshold generator [.005]
        q:      maintain phase coherence
        s:      synthesize analysis input
        S:      optional seed

f,F define the freeze hold time bandwidth, in seconds
