ubject: Re: [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 the
ted PC.
73,
Dave, 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
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
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?
S
8 10:19 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,
lto:[EMAIL 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
iginal Message -
From: "Dave AA6YQ" <[EMAIL PROTECTED]>
To:
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 t
, September 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
good one and you
can regulate the possible small shift between RX and TX sample rates).
73
Patrick
- Original Message -
From: "Stelios Bounanos" <[EMAIL PROTECTED]>
To:
Cc: "Tony" <[EMAIL PROTECTED]>
Sent: Tuesday, September 30, 2008 3:03 PM
Subject: Re
Dave, AA6YQ
-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 Se
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:
Sent: Tuesday, September 30, 2008 6:04 AM
Subject: Re: [digitalradio] Comparing data mode
> On Tue, 30 Sep 2008 00:04:19 -0400, Tony <[EMAIL PROTECTED]> said:
>> What were the sampling rates used by each of those 5 applications, Tony?
>> 73, Dave, AA6YQ
> The sample rates were 11025 Hz for Mixw and IZ8BLY MT63 terminal. Looks like
> 8000 Hz for DM780 and Multipsk. Not sure what'
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 wh
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 co
: [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&
> 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
> 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
y not
> accurately reflect each application's performance in isolation.
>
> 73,
>
>Dave, AA6YQ
>
> -Original Message-
> From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
> Behalf Of Rick W
> Sent: Monday, September 29, 2008 7:23 PM
&
riginal Message-
From: digitalradio@ yahoogroups. com
[mailto:digitalradi [EMAIL PROTECTED] com]On Behalf Of Rick W
Sent: Monday, September 29, 2008 7:23 PM
To: digitalradio@ yahoogroups. com
Subject: [digitalradio] Comparing data
modes
To do simple test comparisons of the modes, I wi
-
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 the
73,
Dave, AA6YQ
-Original Message-
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED]
Behalf Of Rick W
Sent: Monday, September 29, 2008 7:23 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Comparing data modes
To do simple test comparisons of the modes, I
ing. The PC
doesn't seem to mind when running as many as 5 digital mode programs at the
same time.
Tony, K2MO
- Original Message -
From: "Rick W" <[EMAIL PROTECTED]>
To:
Sent: Monday, September 29, 2008 7:22 PM
Subject: [digitalradio] Comparing data modes
> T
To do simple test comparisons of the modes, I will bring up two software
programs and visually see how the print compares between the two. The
main comparisons have been between Multipsk, HRD/DM780, and fldigi. For
most of these tests I have been using my emachines tower with Intel 2.93
GHz run
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