7 Mar
2017
7 Mar
'17
11:26 p.m.
On Tue, Mar 07, 2017 at 11:34:34AM +0100, Paul Davis wrote:
Also, to follow on from something Fons wrote: an
actual 32 bit sample value
would have at least the low 4-6 bits representing brownian (atomic) motion.
That's pretty crazy.
To put this in perspective:
To have a dynamic range corresponding to roughly 27 bits,
an analog signal needs to have full scale power of 1 Watt
(since thermal noise in 20 kHz is around -161 dBW, and
161 / 6 ~= 27).
For 32 bits you'd need more than a kilowatt at the point
of conversion between analog and digital and in every
analog signal point before or after.
Ciao,
--
FA
A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)