Hi,
I've never heard Auro 3D, though it does seem to have some adherents.
I haven't waded through all of their "Auro3D-Octopus-White-Paper" but
found the first nine pages thought provoking.
http://www.auro-technologies.com/uploads/Auro3D-Octopus-White-Paper-
v2-7-20111117.pdf
It concludes that although 24-bit operation is advantageous for audio
creation purposes it is inadvisable for playback purposes. This is
also true for public address systems
Few venues have low enough noise floors to use the dynamic range of
24-bit audio effectively. Apart from external noise (traffic etc.)
there is noise from the audience, air conditioning, fans in audio
amplifiers, lighting systems and video projectors.
The problems with D/A convertors, amplifiers and other electronics
don't get much better in bigger pro-audio systems without making
systems uneconomic. Due to the higher power of such systems the
possibility of hearing damage increases.
I have long been dubious of the common practice of turning all PA
amplifiers up to full and doing all level adjustments prior to that,
often at the mixer. This increases the gain of system noise, hums
etc. It can also mean that the mixer is working at a fairly low
level, bad enough with analogue mixers but worse with digital ones as
the final D/A conversion then throws away the highest bits.
Ciao,
Dave Hunt
_______________________________________________
Sursound mailing list
Sursound@music.vt.edu
https://mail.music.vt.edu/mailman/listinfo/sursound
