My CALL3.TXT was 0-size so no hinting was done.But I do want to get the test
set that was used B4 for determining the traedeoff for speed and false decode
rate and picking the current settings used in WSJT-X.
de Mike W9MDB
From: Neil Zampella <ne...@techie.com>
To: wsjt-devel@lists.sourceforge.net
Sent: Sunday, June 11, 2017 11:47 PM
Subject: Re: [wsjt-devel] WSJT-X vs JTDX
Michael, have you looked at the hint code that was added ... its a bunch of
'if then' decision trees, which can explain the 'extra processing'.
As a user, I'd rather trust the 13K WSJT-X decodes to be REAL, rather than
the 15K of which 2 or 3K may be spurious.
Neil
KN3ILZ
On 6/11/2017 3:49 PM, Black Michael wrote:
I see why people are claiming JTDX decodes better.
I ran a 24-hour test side-by-side on the same audio stream and got the
following numbers.
JTDX average dB on matched QSOs is ~1dB better (not a big deal)
JTDX got 15,690 decodes WSJTX got 13,692 decodes
JTDX got 2,144 decodes that WSJT-X did not WSJTX got 146 decodes that JTDX
did not.
So JTDX got ~15% more decodes...nothing to sneeze at. Can't say I really see
many false decodes but I guess really can't know for sure.
Here's a good example of a noticeable difference in processing this wav file.
https://www.dropbox.com/s/zzddsaqop94bfc9/170504_1159.wav?dl=1
I minimized the values in the Advanced tab for JTDX but it still gets 12
decodes and WSJT-X gets 7. It takes a bit over 5 seconds for JTDX to do its
thing and a bit over 2 seconds for WSJTX. So there is some extra processing
going on for sure. Either in JTDX's "subpass 1" or "subpass 2"? Are sure we
don't want to borrow something back from JTDX? We had a set of test files
before that were used for timing and getting some params for false alarms and
such. Perhaps we should run those again and compare?
-----------------------------------
Michael D. Black
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