Parameters suggested for wavelet analysis of the file "unknown.wav"

CHOICE 1: 
Nstart:	2000
N:	256k (1024*256)  (use 128k if 256k is too time consuming for your computer)

fmin:	350.0
fmax:	6000.0

K:	42

QUESTION: The wavelet diagram resembles to some degree a folded draperi. 
What effect may be the reason for this effect?