31 Mar
2009
31 Mar
'09
6:32 p.m.
sorry:
In [1]: import pywt as W
In [2]: W.__version__
Out[2]: '0.1.7'
(svn version afaiRemember)
2009/3/31 Renato Fabbri <renato.fabbri(a)gmail.com>
Shane: that script was done using pywt version 0.1.6
(alpha) i think that
its current. what version did you find?
Dan: wavelets are used to represent/compress or synth signals with
transients. kind of opposed to FFT to stationary signals... i dindt use LPC
but i plan on studying it, do you know any good material?
2009/3/31 Dan S <danstowell+lxau(a)gmail.com <danstowell%2Blxau(a)gmail.com>>
2009/3/30, shane richards <shanerich(a)email.com>om>:
I've
been trying to do some sound morphs between two different hits of a
snare drum, one
rimshot and the other a plain hit.
I tried using SMSTools, and even some windows
programs under wine, but
the results always seem to sound more like hitting a
bucket full of water
than a combination of the two drums.
Drum sounds are very "difficult" for these tools because the FFT-based
analysis assumes a quasi-stationary signal (imagine a sine wave that
never changes, that's the easiest) whereas drum hits really strongly
violate this. Also phase issues and other stuff. To be honest you'll
probably do best using some kind of clever perceptually-tweaked
crossfade-based technique... or maybe find something using LPC-based
analysis rather than FFT, that might do well (I haven't looked) - LPC
should have a better chance at handling drum sounds gracefully.
Dan
--
http://www.mcld.co.uk
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user