PM
Subject: RE: [digitalradio] Comparing data modes
If you're referring to CPU usage as reported by the Windows Task Manager,
that's an average. The question is whether any app is being starved for
CPU
resources during critical operations.
73,
Dave, AA6YQ
-Original
Dave,
IMO any data program will be talking to the soundcard with a nice big FIFO so
CPU shouldn't be an issue. From memory I use a 10 second FIFO on receive and 2
second on transmit.
I can't think of any problems that could arise as long as there are some free
CPU cycles. What am I missing?
Dothan
[EMAIL PROTECTED]
- Original Message -
From: Simon Brown (KNS)
To: digitalradio@yahoogroups.com
Sent: Saturday, October 04, 2008 3:26 AM
Subject: Re: [digitalradio] Comparing data modes
Dave,
IMO any data program will be talking to the soundcard with a nice big
, AA6YQ
-Original Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
Behalf Of Tony
Sent: Saturday, October 04, 2008 3:11 AM
To: digitalradio@yahoogroups.com
Subject: Re: [digitalradio] Comparing data modes
Dave,
The question is whether any app is being starved
: [digitalradio] Comparing data modes
Dave,
IMO any data program will be talking to the soundcard with a nice big FIFO
so CPU shouldn't be an issue. From memory I use a 10 second FIFO on receive
and 2 second on transmit.
I can't think of any problems that could arise as long as there are some
free CPU
: Dave AA6YQ [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Tuesday, September 30, 2008 3:01 PM
Subject: RE: [digitalradio] Comparing data modes
Stelios's note raises another point independent of sampling rate issues:
when running more than one digital mode app on the same processor, one
PROTECTED]
Behalf Of Tony
Sent: Friday, October 03, 2008 6:35 PM
To: digitalradio@yahoogroups.com
Subject: Re: [digitalradio] Comparing data modes
Dave,
when running more than one digital mode app on the same processor, one or
both apps may be starved for CPU cycles and as a result
DM780 samples at 8kHz and has a lot of encoder / decoder code in common with
fldigi. MT63 / Olivia having being taken from Pavel's original code.
I'll try to find the Microsoft Blog entries which explain why some rates such
as 11,025Hz are so poor with W2K / XP but not with VISTA.
It's not a
I'm sure fldigi uses 8kHz in general and 11,025 when needed for some Thor /
DominoEx modes.
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
- Original Message -
The sample rates were 11025 Hz for Mixw and IZ8BLY MT63 terminal. Looks
like
8000 Hz for DM780 and Multipsk. Not sure
-Original Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
Behalf Of Stelios Bounanos
Sent: Tuesday, September 30, 2008 9:03 AM
To: digitalradio@yahoogroups.com
Cc: Tony
Subject: Re: [digitalradio] Comparing data modes
On Tue, 30 Sep 2008 00:04:19 -0400, Tony [EMAIL PROTECTED
regulate the possible small shift between RX and TX sample rates).
73
Patrick
- Original Message -
From: Stelios Bounanos [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Cc: Tony [EMAIL PROTECTED]
Sent: Tuesday, September 30, 2008 3:03 PM
Subject: Re: [digitalradio] Comparing data modes
30, 2008 2:59 PM
Subject: Re: [digitalradio] Comparing data modes
Hello Tony,
The sample rate on Multipsk is 11025 samples/s for all modes except in
MT63
where it is 8000.
73
Patrick
- Original Message -
From: Tony [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent
-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
Behalf Of Dave AA6YQ
Sent: Monday, September 29, 2008 8:14 PM
To: digitalradio@yahoogroups.com
Subject: RE: [digitalradio] Comparing data modes
Its my understanding that when multiple simultaneously running applications
are using
I COULD NOT AGREE MORE WITH THE BELOW STATEMENT
EX MT 63 I RUN IZ8BLY DECODE IS GREAT BUT SLOW COMPARED TO MULTI PSK
4.9/4.10 WHICH IS 2X FASTER DECODE BUT PRONE TO MORE ERRORS TEST DONE
ON SAME RECEIVER TO CPU'S AND GMFSK FOR LINUX PERSONALLY DOESN.T HOLD A CANDLE
TO THE OTHER TWO AND NOT ONLY
: RE: [digitalradio] Comparing data modes
Its my understanding that when multiple simultaneously running applications
are using the soundcard with different sampling rates, that Windows delivers
a compromise sampling rate. Thus comparisons run on the same PC may not
accurately reflect each
, September 29, 2008 8:14 PM
Subject: RE: [digitalradio] Comparing data modes
Its my understanding that when multiple simultaneously running
applications
are using the soundcard with different sampling rates, that Windows
delivers
a compromise sampling rate. Thus comparisons run on the same PC may
What were the sampling rates used by each of those 5 applications, Tony?
73, Dave, AA6YQ
Dave,
The sample rates were 11025 Hz for Mixw and IZ8BLY MT63 terminal. Looks like
8000 Hz for DM780 and Multipsk. Not sure what's going on with Fldigi. I'm
using the Vista version.
Tony, K2MO
: [digitalradio] Comparing data modes
What were the sampling rates used by each of those 5 applications, Tony?
73, Dave, AA6YQ
Dave,
The sample rates were 11025 Hz for Mixw and IZ8BLY MT63 terminal. Looks like
8000 Hz for DM780 and Multipsk. Not sure what's going on with Fldigi. I'm
using
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