Well the way I see it, the educational value could be enough to make it
worthwhile, if it's not useful musically.
To do it I would probably use Pure Data; in which case I wouldn't know how
to use pvs data, only Pd's native fft format, which treats blocks of FFT
data as audio signals.  Not sure if a Pd graph could be automatically set to
logarithmic, but perhaps non-real-time conversions could be made.

Now that I think of it, couldn't the pvs data be written to a Csound table,
and this table converted logarithmically to another table?  I don't have
much experience viewing graphs with Csound, though; perhaps I'd send that
data out to Pd if I had to throw something together.
Now that I looked, I realize pvs uses frequency/amplitude bins, not
amplitude/phase.
So I'll have to give it some thought.

-Chuckk

On 10/11/07, Tim Mortimer <timmortimer@d2.net.au> wrote:
>
>
> How so Chuck?
>
> I know we have things like SPEAR et al (our original poster may also find
> SPEAR of use...)
>
> but by a similar implication, converting PVOC analysis data to a directly
> viewable & editable format is something i have thought might be handy /
> useful at some point... (although thinking out loud, i'm not sure what it
> would offer that SPEAR & /or SDIF style resynthesis does not exactly.. in
> terms of
>
> *ease of use in performing meaningful adjustments on data before
> resynthesis, or
> * arbitrarily creating "spectra" for synthesis based on non analysis /
> real
> world models.....
>
> I have some related thoughts & issues about ATS i was going to ask , but
> i'll put them in a separate post I think immediately to follow this one...
>
> As far as the original post goes, I also thought at some point i heard
> something about the possibility of a more exponentially spaced analysis
> that
> was achievable by focussing different window sizes on different frequency
> bands... idle speculation though on my part, but someone might actually
> enlighten us to what that is or might be... (?)
>
>
> Chuckk Hubbard wrote:
> >
> > I don't know if this fits your needs, but it would be fairly simple to
> > produce a logarithmic *graph* of the linear frequency analysis produced
> by
> > the pvs opcodes.  But the data itself would still be spaced
> linearly.  If
> > that doesn't help, I don't know of anything.
> >
> > -Chuckk
> >
> >
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/exponentially-spaced-spectral-transformation--tf4594662.html#a13152002
> Sent from the Csound - General mailing list archive at Nabble.com.
>
> --
> Send bugs reports to this list.
> To unsubscribe, send email to csound-unsubscribe@lists.bath.ac.uk
>



-- 
http://www.badmuthahubbard.com