[LAD] A little quiz about audio measurements...

[Folderol]

On Fri, 28 May 2010 19:20:54 +0200
Ralf Mardorf <ralf.mardorf at alice-dsl.net> wrote:

> Veronica Merryfield wrote:
> > On 05/28/2010 02:31 PM, fons at kokkinizita.net wrote:
> >   
> >> Hello all,
> >>
> >> This week I had to perform measurements on a audio
> >> interface, and this resulted in some quite interesting
> >> results. Before revealing what happened, I'll let you
> >> have a look at some of the data and come up with your
> >> own conclusions, see
> >>
> >> <http://www.kokkinizita.net/linuxaudio/quiz.html>
> >>
> >> (Free beer at the next LAC for the best analysis)
> >>
> >> Ciao,
> >>
> >>     
> >
> > You can't trust a loop back test. 
> >
> > Any instability or dither on the reference clock of card A (fifo clocking say) is not going to show in a loop back test. 
> >
> > Vrnc
> 
> Is Veronica Merryfield the winner?

I'm highly suspicious of the USB link, but can't quite put my finger
on why.

-- 
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.