Hi, Julius.
I'm using a rectangular window. This is what I get using os.osc(1000) using
the same analysis parameters:
https://www.dropbox.com/s/0b9bvpek6axj47d/zcsine.png?dl=0.
Os.osc(1000) looks better with this windowing. I understand that a
rectangular window will enhance high-frequency components, but I still
wonder why sin has those and os.osc doesn't.
Cheers,
Dario
On Thu, 20 Feb 2020 at 20:47, Julius Smith <julius.sm...@gmail.com> wrote:
> Something amiss in my attached window screenshot. One more try . . .
>
> On Thu, Feb 20, 2020 at 11:43 AM Julius Smith <julius.sm...@gmail.com>
> wrote:
> >
> > I am seeing much higher purity from sin (blue) over osc (red), using a
> > Blackman window on 2048 samples generated by faust2octave. Which FFT
> > window are you using?
> >
> > import("stdfaust.lib");
> > f = 1000;
> > sino = 2*ma.PI*f*ba.time/ma.SR:sin;
> > process = sino,os.osc(f);
> > // then faust2octave
> >
> > On Thu, Feb 20, 2020 at 7:01 AM Dario Sanfilippo
> > <sanfilippo.da...@gmail.com> wrote:
> > >
> > > Hello, list.
> > >
> > > I'm generating the spectrum in red using double-precision and 96kHz SR
> with: process = 2*ma.PI*1000*ba.time/ma.SR:sin;
> > >
> > > See this plot:
> https://www.dropbox.com/s/73ollb5pmkud47d/sinefft.png?dl=0.
> > >
> > > Would you know what causes the high-frequency noise? process =
> os.osc(1000); appears to be much cleaner. (Not shown in the plot.)
> > >
> > > Thanks,
> > > Dario
> > >
> > >
> > >
> > > _______________________________________________
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> > > Faudiostream-users@lists.sourceforge.net
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> >
> >
> >
> > --
> > "Anybody who knows all about nothing knows everything" -- Leonard
> Susskind
>
>
>
> --
> "Anybody who knows all about nothing knows everything" -- Leonard Susskind
>
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