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SOUNDSHAPER: CDP REFERENCE

SpecDrunk  - random walk through analysis windows


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SUMMARY
SPECDRUNK takes a "random walk" through the analysis windows:  it moves through the file file reading windows, but jumps backwards or forwards at random. The size of the random jumps cannot be greater than max_step.  The process never reads backwards through the file and proceeds until the specified output duration has been generated.

PARAMETERS
 max step  Range (in windows) for the walk: maximum size of jump to next window.
        Leaps that would go beyond the file length are reflected back inside.
Range: 1 - 64 (?) CDP manual gives 64 max., but more is possible; however it's less than no. of windows/2.
 start time Time in file where walk should begin
Range: 1 to file-length (secs)
 duration  Required duration of output file after re-synthesis: can be longer than input file. 
Range: 1 - 32767 (secs)

OPTION
 no repeats
Ignore window repeats, i.e. steps of zero length.
 
NOTES
If the range (max step) is small (e.g. 10 windows), the output tends to linger around the start-point in the file, progressing very slowly away from it in an arbitrary direction. This results in a mix of time-stretching and slow wandering through the source. If large, the drunken walk tends to leap about wildly in the file, scrambling the source sound.

© Ensemble Software and Composers Desktop Project 2012