Re: [LAU] maximum input level, or normalization and dc offset correction?

From: Harry van Haaren <harryhaaren@email-addr-hidden>
Date: Fri Jul 12 2013 - 23:34:27 EEST

On Fri, Jul 12, 2013 at 9:20 PM, Ricardus Vincente <wizardofgosz@email-addr-hidden>
wrote:
> Further, if the D/A has sufficient headroom (modern good D/A should) I
would think it's not
> really a problem.

Found it! I was thinking of a presentation I'd seen somewhere, where the
details of inter-sample peaks is properly explained: Slide 22 of Fons' EBU
loudness meter presentaton (given at LAC2011 Maynooth, by Jorn
Nettingsmeier):
http://lac.linuxaudio.org/2011/download/lm-pres.pdf

The wave is pretty much predictable: until a (strange) *double 1.0* value
sample appears. The D/A conversion goes crazy, a spike to value of approx
3, while the range should be -1 to 1.

The worse thing is, the longer this "predictable" part is, the *higher* the
spike gets.

> So in short, I tend not worry about it. :-)
Me neither! Posted this for the sake of completeness. -Harry

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Received on Sat Jul 13 08:15:06 2013

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