14 Mar
2007
14 Mar
'07
9:57 a.m.
Bill Adair wrote:
The Perpetual Technologies devices (P-1A D/D &
P-3A D/A) were very
successful a few years ago with their hardware based upsampling.
Success == "sold a lot"?
I'm hoping to
achieve something similar by writing upsampling code that can operate in non-real
time on a PC chip.
Are you aware of the Shannon Nyquist Sampling Theorem:
http://en.wikipedia.org/wiki/Nyquist-Shannon_Sampling_Theorem
Its corollary is that if you downsample and then upsample, the data
destroyed during the downsampling can *never* be recreated.
Erik
--
+-----------------------------------------------------------+
Erik de Castro Lopo
+-----------------------------------------------------------+
"We can forgive you for killing our children but we can't forgive
you for making us kill yours."
-- Golda Meir, one of the founders of the State of Israel.