[opus] [EXT] Re: Re: Opus Tools -- low bitrates, new features in 1.5, "expect-loss"

[Jan Stary]

On Aug 09 11:58:33, u.windl at ukr.de wrote:
> > -----Original Message-----
> > From: opus <opus-bounces at xiph.org> On Behalf Of Jan Stary
> > Sent: Friday, August 9, 2024 12:00 PM
> > To: Petr Pařízek <petrparizek2000 at yahoo.com>
> > Cc: opus at xiph.org
> > Subject: [EXT] Re: [opus] Re: Opus Tools -- low bitrates, new features in 1.5,
> > "expect-loss"
> > 
> 
> [Windl, Ulrich] 
> [...]
> > > > Also if you look at the samples for (e.g.) a 20kHz sine samples at 44kHz,
> > > > the samples hardly resemble a sine wave very mch, and seen reversely:
> > > > It's not obvious that it once was a pure sine wave.
> > 
> > On the contrary, a sine wave of 20 kHz
> > can be perfectly reconstructed from samples made at 44 kHz.
> [Windl, Ulrich] 
> 
> But only if you know that it was a constant-amplitude pure sine and if there is no jitter between the sampling and the sine, right?

Of course. There is infinitely many
real functions going through those isolated points.

> That all sounds rather unlikely to me.

What does, the Shannon theorem?