13 Jun
2005
13 Jun
'05
6:46 p.m.
Alfons Adriaensen wrote:
On Mon, Jun 13, 2005 at 10:49:38PM +1000, Erik de
Castro Lopo wrote:
Yes, but if you meaure the SNR the way I do, you are also
ensuring the absence of bugs in the implementation of the
algorithm. As you are probably aware, looking at code is
not the best way to find bugs in the implementation but
testing actually works quite well.
Erik
--
+-----------------------------------------------------------+
Erik de Castro Lopo nospam(a)mega-nerd.com (Yes it's valid)
+-----------------------------------------------------------+
"C++ is like jamming a helicopter inside a Miata and expecting
some sort of improvement." -- Drew Olbrich
The SNR and bandwith cannot be determined by
reading code.
Measurement is the only option.
It's perfectly possible to calculate this, and it isn't even
very difficult. In the case of a sinc filter, everything is
determined by the window on the complete sinc function that
defines your filter, and the ratio of the two sample rates.
In fact the 'measurement' you describe in the presentation
you referred to is not really a measurement. It is 100%
numerical and there's nothing physical involved. So it's in
fact a long winded way to do the calculation.