With regards to "Piece of Me", I believe you are almost definately hearing
this:
http://www.antarestech.com/products/avox.shtml#throat

including so called 'pitch correction', like autotune and melodyne, which I
imagine are
both used liberally all over the album, and always have been.
see http://www.antarestech.com/products/auto-tune5.shtml
and http://www.celemony.com/melodyne/

Interestingly on the 'THROAT' plugin, under a section titled 'Model
Glottal', there is
a parameter called pulse width, I don't know how that works but it sound
fun.
listening to the 'PUNCH' audio example is also quite reminiscent of the
track.

I've been familiar with pitch correction for some time as an alternative to
my favourite
vocoder effects, in producing robotic sounds: the 'Cher Effect' where the
pitch correction
is overused to lock the voice to the nearest note.

I think this effect could be recreated with some success using harmon2 (with
spectrum, specptrk).
I know hilbert can produce some very clear pitch frequency shift effects
like glisses and simple harmony I think that preserves formant ratios as
well.








On 10/01/2008, Tim Mortimer <timmortimer@d2.net.au> wrote:
>
>
> (hang in there Victor - your cue comes up in a bit..)
>
> Following on from all this...
>
>
> http://www.nabble.com/Pitch-Syncronous-Granular-Synthesis-%28or-does-Curtis-Roads-dream-of-electric-Britneys%29-tt14707962.html
>
>
> This is one of the more "authentic sounding" implementations of a "formant
> tweeky" vocal effect i have heard.
>
> http://www.xponaut.com/showpage?pid=91
>
> But it still lacks the basic ability to "wilfully impose pitch" rather
> than
> just being a correction tool.
>
> The manual doesn't go into much detail, but gives some vague insights, &
> alludes to FFT being in the mix somewhere (for tracking & formant
> identification assumedly) as well as use of the key words "pitch
> syncronous"
> in an otherwise evasive & undetailed context... mmm, how does all this fit
> together? (i'm as determined as hell to see this realised - this effect
> has
> eluded me for years!)
>
> The GUI also looks a bit like what i'm sure the original "suitcase synth"
> that did this looked like... (does anybody know what that synth is?)
>
> The other thing i thought in response to all this (Victor this is your
> bit)
> is that if pvscale can shift pitch & preserve formants - why couldn't the
> same algorithm be used to create access to "formant tweaking"?? - again in
> combination with pvspitch tracking & correction, this might provide
> something pretty useable & controllable..)
>
> So Victor, do you have any thoughts on this? does "pvsformant" sound like
> a
> reasonable opcode request? What do you know of more "conventional" pitch &
> formant shifting effects? am i missing something obvious already in the
> csound arsenal? (Basically i want to repitch & formant tweak vocals
> without
> "Vocoding" them...)
>
> I got partikkel functioning basically this arvo (in 5.06) & playing back a
> vocal sample... but it's still a long way short of doing all the formant
> identification & "effective resynthesis" I'm after - (not implying it
> can't
> be done - but its still a long road... as my original quotations from
> Computer Music tutorial suggest - I still don't know what the hell this
> means
>
> "The output signal results from the excitation of the pulse train on the
> weighted sum of the impulse responses of all the filters" (conclusion of
> Curtis Roads description of Pitch Syncronous Granular in Computer Music
> Tutorial page 174-175)
>
> Does anyone know of the articles i refered to that are referenced in
> Computer Music Tutorial?
>
> They include an MIT press publication 1991 - "Representations of Musical
> Signals..."
>
> If someone can assure me that the process is described in sufficient
> detail
> in Microsound that it could be implemented based theron i'm prepeared to
> splurge & grab it from Amazon... but really i'm still looking for one of
> the
> "king hitter developers" to help me over the line with this if at all
> possible...
>
> & when the hordes of spotty, DSP obsessed, WASP males come flooding in via
> csounds.com you can thank me later...
>
>
> --
> View this message in context:
> http://www.nabble.com/Britney-Spears-of-Destiny-%28esp.-attn-Victor-Lazzarini-%2B-others%29-tp14730945p14730945.html
> Sent from the Csound - General mailing list archive at Nabble.com.
>
>
>
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