Hmm..sounds like somethng's not workng rght.
I'm traveling this week then booked solid next week, but I'll try to get
a look at this when I can.
cheers
Miller
On Thu, Mar 13, 2014 at 09:48:48AM -0700, Benoît Fortier wrote:
> Hi Miller,
>
> Here's a more detailed example. I've found that this "problem" is
> particularly obvious with minpower. The sound file I'm playing through
> sigmund has peaks varying mostly between 60 and 80, with occasional peaks
> around 90 (according to sigmund's env output). To my understanding the help
> file suggest that a value of minpower around 50 should detect pretty much all
> the notes, and a value around 90 would detect almost none. But in practice I
> find that there's almost no difference. I have to use values of minpower
> around 100 and 130, with 130 having the effect of effectively making sigmund
> output no notes at all. Is it a normal behaviour? Is there something I don't
> get in the way sigmund's work? I feel the growth parameter have this same
> issue, it feels to me that it's working quite differently in practice than
> what you would expect from reading the help file.
>
> Thanks for this wonderful object!
>
> Benoît Fortier
>
>
>
>
>
> Le jeudi 13 mars 2014 0h37, Miller Puckette <m...@ucsd.edu> a écrit :
>
> I presume you found the (very short) mention in the subppatch of the
> help wnidow ("pd setting-parameters").
>
> Basically, if the measured signal power is less than "minpower" (expressed
> in dB) then the reported instantaneous potch is zero and no new notes will
> be reports (and this can give rise to repeated notes if the input power
> drifts below this value and then rises again.)
>
> "growth" is a threshold whereby sigmund~ may report repeated notes at teh
> same pitch, even if that pitch s continuously present in the signal, just
> because of a fall and subsequent rise in the measured power.
>
> This all needs a picture :)
>
> M
>
>
> On Wed, Mar 12, 2014 at 04:10:23PM -0700, Benoît Fortier wrote:
> > Ok folks, never mind, I did some more testing with sigmund~ and I do now
> > see that minpower and growth seems to be working. It works in a way I'm not
> > quite sure to understand so I find it hard to use those parameters in a
> > meaningful, predictable way, but I guess that's because of my limited
> > understanding of what's going on exactly under the hood.
> >
> > Benoît Fortier
> >
> >
> >
> >
> > Le mercredi 12 mars 2014 16h50, Benoît Fortier <benoitfort...@yahoo.ca> a
> > écrit :
> >
> > Thanks for your reply. Yes I did some testing with fiddle and Helmholtz, If
> > I need to I'll get to that in an other question.
> >
> > My question wasn't clear enough sorry about that. I would like first to
> > clarify some aspect of the sigmund "notes" mode which seems very straight
> > forward in the help file, namely growth and minpower parameter, but which
> > in practice I find it doesn't quite work as expected. As anyone ever
> > managed to get significantly different output by changing those two
> > parameters? Are they working at all, and if so can anyone explain for the
> > record how they actually work? Or maybe I'm missing something obvious?
> >
> > I'll ask a clearer question regarding other specific strategies for
> > refining pitch tracking result soon, thank you for your help.
> >
> > Benoît Fortier
> > 581 995-5622
> >
> >
> >
> > Le mercredi 12 mars 2014 16h02, Alexandros Drymonitis <adr...@gmail.com> a
> > écrit :
> >
> > Haven't tried [sigmund~], but [fiddle~] and [helmholtz~] (the latter by
> > Katja Vetter) and I found [both fine but [helmholtz~] a bit better for my
> > taste. I think it's a bit more responsive. What if you combine this with
> > [env~] for example and this way you get pitch and amplitude...
> >
> >
> >
> >
> > On Wed, Mar 12, 2014 at 9:42 PM, Benoît Fortier <benoitfort...@yahoo.ca>
> > wrote:
> >
> > Dear list,
> > >
> > >
> > >I've been working on a patch for quite a few months now which involves
> > >pitch tracking. I've explored many possible solutions, considering the
> > >pros and cons of every approach, made different tests, etc. I've also done
> > >a lot of reading (help files, forums, etc), but I couldn't find satisfying
> > >answers to all my questions. I am now in front of 4 or 5 different
> > >approach, each of which requires to do a certain number of compromise at
> > >different level. My feeling is that I am now at the point where I could
> > >possibly eliminate some of those compromise with your help.
> > >
> > >
> > >I have a lot of questions, but I'll start with one regarding Sigmund's
> > >notes parameters. I've done a lot of tests, changing one parameter at a
> > >time. I found that only the stable time and vibrato parameters seems to be
> > >affecting the output the way it should. The other parameters - growth and
> > >minpower - doesn't seem to be working the way it's described in the help
> > >file. Am I the only person who noticed that? When I looked in the list
> > >archives, I found someone else mentioning this issue but nobody replied
> > >(and i lost the link to the thread).
> > >
> > >
> > >I'm using my patch to track the pitch of a violin. What I'm trying to do
> > >is to convert the pitch of the violon into the most accurate "note on"
> > >message possible (with midi note and velocity). I need this patch to be as
> > >responsive as possible but also with as few insignificant output as
> > >possible.
> > >
> > >
> > >Thanks for your help!
> > >
> > >
> > >Benoît Fortier
> > >581 995-5622
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> > >
> >
> >
> >
> >
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