: Vojtech Bubnik [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Saturday, November 22, 2008 4:14 PM
Subject: [digitalradio] Re: Olivia mode comparisons, testers needed.
Hi Andy.
Let's say one works with Olivia 1000/32. Olivia sends/receives 7bit
ASCII letters. Each 7 bit letter
- Original Message -
From: Andrew O'Brien
To: digitalradio@yahoogroups.com
Sent: Sunday, November 23, 2008 6:08 PM
Subject: Re: [digitalradio] Re: Olivia mode comparisons, testers needed.
So does this mean that Patrick has IMPROVED on Pawel's design and the true
implementation
Message -
From: Andrew O'Brien
To: digitalradio@yahoogroups.com
Sent: Sunday, November 23, 2008 6:08 PM
Subject: Re: [digitalradio] Re: Olivia mode comparisons, testers
needed.
So does this mean that Patrick has IMPROVED on Pawel's design and
the true implementation within
-- an AV update, say -- as XP is set up here.
Cortland
KA5S
- Original Message -
From: Patrick Lindecker
To: digitalradio@yahoogroups.com
Sent: 11/23/2008 4:15:19 PM
Subject: Re: [digitalradio] Re: Olivia mode comparisons, testers needed.
Hello Andy,
The Multipsk code is not better
Hi Andy.
Let's say one works with Olivia 1000/32. Olivia sends/receives 7bit
ASCII letters. Each 7 bit letter is coded by Walch-Hadamard
transformation into 2^(7-1)=64 bits. One of 32 tones modulation codes
32=2^5 combinations, which equals to 5 binary bits. Olivia is
spreading 5 7bit letters
Vojtech,
If you can improve this with Pawel's code base many developers would be most
grateful :-)
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
- Original Message -
From: Vojtech Bubnik [EMAIL PROTECTED]
I believe Pawel's code may be improved to decrease time lag in case
the
- Original Message -
From: Vojtech Bubnik [EMAIL PROTECTED]
To: digitalradio@yahoogroups.com
Sent: Saturday, November 22, 2008 4:14 PM
Subject: [digitalradio] Re: Olivia mode comparisons, testers needed.
Hi Andy.
Let's say one works with Olivia 1000/32. Olivia sends/receives 7bit
ASCII
The lag is in the software - it's part of the design for the error
correction. Where error correction is part of the design then *in general*
with Ham modes you have to wait a while before text is decoding is the error
correction is applied. The lag is not caused by CPU load.
To really
Folks, when Simon was first adding Olivia to DM780 he studied Pawel
Jalocha's coding and consulted with him about the correct implementation.
The lag noticed in DM780 is reportedly as the Pawel Jalocha intended. What
I am looking for is people to get on the air with Olivia and see if the
Interleave is a tradeoff... improved error correction
vs latency. If you are going to use a digital mode, as an Amateur,
you have a responsibility to learn something about how it works. For
the general population, software needs to be idiot proof. This
shouldn't be a constraint for software
Well...I guess if you consider that asking reasonable questions in a
technical forum to qualify someone as an idiot, it kind of says
something about the technical value of your response.
Where better to turn in order to learn how it works than a forum
like this??
Thanks for nothing..
Curt
KU8L
In the December 2008 QST there is an article about Olivia.
In that article is a reference to the latency, to me it
sounded as if it's part of the protocol.
If only some Programs have the latency issue, then the
operators using that software should tell the other
operator about it in their
Here is my personal experience comparing Multipsk and DM-780 in
Olivia 500/16:
DM-780 needs significant more time for synchronizing than Multipsk
(the first 2 or even 3 or 4 letters of a call are not decoded in DM-
780). I haven't seen any better decoding by DM-780 under S/N figures
down to
Andy...
I can help out Mon, Tue, and Wed of next week during the day. Also the week of
15 December, 22 December and 29 December... Please advise as to times and
frequencies you wish to use...
I use OLIVIA 1000hz/32 tones for a MARS digital net I run and we have found it
to be very good in
Andy,
I can test all software packages any weekday during the mid-day hours
or weekends.
Lynn - KB3FN
--- In digitalradio@yahoogroups.com, Andrew O'Brien
[EMAIL PROTECTED] wrote:
Olivia mode comparisons, testers needed.
I am interested in testing weak signal reception of Olivia 500/16
How are you going to make sense of the variety of MIPS performance
across different testers, or are you just looking for trends. A is
faster here than B, etc?
I run all but DM780--it doesnt like Win2K and my soundcard/machine
configuration. Currently running Fldigi--Win, not Linux.
Curt
KU8L
MIPS shouldn't have any effect as long as the CPU doesn't run at 100%.
Olivia likes a calibrated soundcard.
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
- Original Message -
From: captcurt2000 [EMAIL PROTECTED]
How are you going to make sense of the variety of MIPS performance
Maybe there would be interest in what some of us sometimes monitor for
the NBEMS frequencies of 3584, 7067, 10136, 14074, all with + 1500 Hz
audio center.
If you have a known frequency, you can even print stations that would
otherwise never be copied in the noise.
73,
Rick, KV9U
Lynn
Sooo. a 500Mhhz machine running at 20% is going to perform the
integrations and decoding same delay as a 2 Ghz machine running at 20%??
That seems counter intuitive to me..
I'm sure you're right but I don't understand how that can be.
I thought the load information talked about resources not
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