[hfsig] Performance of 24/192 soundcards? USB Soundcards
t.sailer at alumni.ethz.ch
Tue Sep 21 12:04:09 CDT 2004
On Tue, 2004-09-21 at 18:42, Anthony.N.Martin at marconiselenia.com wrote:
> sigma-delta ADCs. For digital radio, LF response is probably
> important to you, particularly I&Q matching of the LF response,
> and if it's determined by a pair of -20% +50% electrolytics...
I don't think you want to use the spectrum below roughly 1kHz for
serious high performance radio, as noise and interference go up towards
> fall over. I don't see anything in G3RUH that breaks properties of
> HDLC so it may be the G3RUH implementation is at fault. I don't
> think anyone has looped round a G3RUH via an adjustable HPF to get
> any hard facts anyhow.
Group delay variations?
More information about the hfsig