VirusKiller;576919 Wrote: 
> 
> Any ideas where these parameters might be in the (commentless) sox rate
> source code?

Don´t know sorry. I read out that a minimum bw of 74% can be choosen
without allowed aliasing and 85% with aliasing.

One thing i don´t get. Upsampling here gets the impulse rid of
pre-ringing on paper but adds other noise that wasn´t there. The next
digital filter inside the DAC must change that impulse again. Most
likely it just ads some pre-ringing and more. And at last even the
OP-Amp output stage applies another lowpass that changes it one more
time. Does it really make any sense then? We may change the sound in a
highly complicated level then but what for!? Mustn´t the whole DAC be
build with upsampling in mind?

Any graph that illustrates the real signal at the analog exit would be
nice.

Besides that i once upsampled some songs offline and played them. If it
changed anything  then it was wose on my Transporter. Of cause that
wasn´t with that much effort when i tried.


-- 
Wombat

Transporter -> RG142 -> Avantgarde based monoblocks -> Sommer SPK240 ->
self-made speakers
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View this thread: http://forums.slimdevices.com/showthread.php?t=69454

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