discontinuities every N samples?

[Sciss]

Hi there. Thanks for sharing this code. I tried to run the Matlab example in Octave, which seems fine when removing the sonogram display (which doesn't exist). I noticed however that every N samples (default: 256) there is a discontinuity in the generated output file. This is noticable already in the included example (as a slight audible regular crackle at times), although the nature of the voice makes it less apparent; I tried various other sound source for which the problem is strong perceivable. Are you aware of this issue? Is it inherent in the algorithm?