Re: [Audacity-devel] Amplify is very noisy

[Leland <le...@au...>]

--On June 2, 2008 1:48:19 AM +0100 Martyn Shaw 
<mar...@go...> wrote:

> Maybe it isn't an issue.  What are you seeing?  I see 'silence' as a
> flat line of zeros here.  Other places may see it as +-1 LSB (which I
> would argue is probably more valid), but I don't know if others have,
> or have coded that.  http://en.wikipedia.org/wiki/Dither seems a
> reasonable reference if dither is the answer.
>
I think may we have a rounding difference.  First time through, 
"Amplification" is 0.0 and "New Peak Amplitude" comes up as -Infinity. 
Tracing shows that the Init() method shows the single silent track's min 
and max values are both zero.

Second time through, min equals -0.000274658203 and max equals 
0.000274658203, giving an "Amplification" of 50 and a "New Peak Amplitude" 
of -21.2.

I'm not going to look much further just now, but I reckon this might should 
go on the "Things to look into list".  (I don't know where that is these 
days.)

Also, for the sake of novices, wouldn't a "No limit" checkbox be better 
than "-Infinity" or would that mean 2 different things?

Leland