Re: [wsjt-devel] WSJT-X vs JTDX

2017-06-12 Thread Black Michael via wsjt-devel 
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 
 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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Re: [wsjt-devel] WSJT-X vs JTDX

2017-06-12 Thread ea2ekh 
Could you send me a randomly picked up subset of the JTDX exclusive decodes 
together with a time stamp?  I have a live data feed from pskreporter for a 
visualization project and I can verify wether other stations received it and 
what they were running.

 I've got mostly  solid data for the last 30 days (except for a couple of 
problems with my data collection script)

For the data inclined, data is being fed to a Elasticsesrch cluster.


73,


Borja - EA2EKH




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Re: [wsjt-devel] WSJT-X vs JTDX

2017-06-12 Thread Wolfgang 
Title: Re: [wsjt-devel] WSJT-X vs JTDX



and there is another issue with those decoded 'very weak signals' on the HF bands!

In Europe we have different countries, different mentality, some like it soft, 
some like it 'hot'...

The huge 'CALL3.TXT' file is an essential part of the hinted decode of JTDX.
 
Given that there is a weak signal on the band, as JTDX claims to decode it by
hinted decode, maybe it even looks like a rare DX, some stations want to make 
sure and trying to work those. 

So, what's happening: hearing a weak signal = let's try with more power! 
And this is not the idea behind JT65 & JT9.


73 de Wolfgang
OE1MWW

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