[hpsdr] Mercury v2.4 -- still distorted audio

[Bob McGwier]

You are not the only people reporting that the Atom board will not 
support 192,000 samples per second.  I am investigating this since it is 
inconsistent with what I see from QS1R and GnuRadio.  It appears to me 
to be some problem in PowerSDR (which I would not doubt).  It is not 
limited to HPSDR and Mercury,  the instability is also present in F5K 
(firewire interface) with 192000 and just one more serious piece of 
processing turned on, such as ANF or NR. 

All of this will be dealt with in dramatic fashion shortly.  Use it at 
96000 for now but there are no excuses.  This should be a cakewalk for 
the Atom at 192000 and there is a way to make this much easier on the 
computer.

QRX,
Bob
N4HY



Paul Beckmann wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
>   
>
> ------------------------------------------------------------------------
>
> THANKS! THAT DID IT!
>
> This is with the ATOM board so all those who have gotten one for your 
> hpsdr system, be informed!
>
> BEST 73!
>
> --Paul, wa0rse
>
> On Sat, Jan 24, 2009 at 12:58 PM, Doug Bade <kd8b at thebades.net 
> <mailto:kd8b at thebades.net>> wrote:
>
>     Have you tried reducing the dsp scan bandwidth from 192k to 96k???
>     My cpu board USB subsystem will not support 192k @2048... I need
>     to reduce to 192k at 1024, or 96k at 2048...
>
>     What I hear sounds like what you are describing....
>
>     Just a thought...
>
>     Doug
>     KD8B
>
>

-- 
ARRL SDR Working Group Chair
Member: ARRL, AMSAT, AMSAT-DL, TAPR, Packrats,
NJQRP, QRP ARCI, QCWA, FRC.
"It is human nature to think wisely and act in
an absurd fashion.", Anatole France.


 1232913996.0