Re: [LAU] Easy sound morphing?

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@email-addr-hidden <danstowell%2Blxau@email-addr-hidden>>

> 2009/3/30, shane richards <shanerich@email-addr-hidden>:
> > 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@email-addr-hidden
> http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
>

_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@email-addr-hidden
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
Received on Wed Apr 1 00:15:02 2009