Joe Taylor
f069477dbb
Bring test28.f90, ft4_testmsg.f90, ft8_testmsg.f90, ft8code.f90 up to date.
2020-01-03 13:34:56 -05:00
Joe Taylor
3cb75a49ec
Reorder the FT4 test messages used in ft4code.f90.
2019-12-18 12:14:34 -05:00
Joe Taylor
26d1996eb8
Tweaks to ft4code.
2019-12-18 10:42:08 -05:00
Joe Taylor
3397bf49b4
Add utility program ft4code.
2019-12-18 10:02:00 -05:00
Steve Franke
85b5967d99
Fix ncontest initialization and heap storage conflict.
2019-12-11 10:16:48 -06:00
Steve Franke
63e9c21a17
Simplify ft4sim by removing waveform generation code and replacing it with a call to gen_ft4wave.f90.
2019-10-24 10:36:50 -05:00
Bill Somerville
60332e799e
Merge branch 'develop' into feat-refactor
2019-07-04 12:34:20 +01:00
Steve Franke
fa44ed84c5
Remove an unused routine. Minor tweaks.
2019-07-03 10:55:13 -05:00
sirhc808
27d4471cde
Merge branch 'ft9_refactor' into feat-refactor
...
# Conflicts:
# CMakeLists.txt
# lib/ft4/getcandidates4.f90
# lib/ft4/sync4d.f90
2019-07-02 12:06:14 -05:00
sirhc808
84fd0ed7c7
clean up a few warnings
2019-07-01 21:10:43 -05:00
Steve Franke
e7889ba11b
FT4: candidates within 20 Hz of nfqso are presented to the decoder first.
2019-06-24 11:09:55 -05:00
Steve Franke
c26d0b4f29
FT4: Imrovements to sync.
...
Divide DT search range into 3 segments. Search central segment (near DT=0)
first and try to decode the largest peak. Then find the largest peak in each
of the surrounding segments and try to decode those only if the peak is larger
than the one found in the central segment.
Also re-indent ft4_decode.f90 and some other minor tweaks.
2019-06-16 09:46:33 -05:00
Steve Franke
7e9cc9cbc7
FT4: Improve sync performance on disturbed channels. Make jt9 command-line option -d work
2019-06-14 16:28:59 -05:00
Steve Franke
fc07bd9287
FT4: minor tweak to avoid passing an unnecessary argument and reject bad candidates sooner.
2019-06-12 08:16:10 -05:00
Steve Franke
3c23a05d1f
Move demod and bit metric calculation to a subroutine. This will make
...
it easier to experiment with alternative schemes for demod.
2019-06-08 08:34:46 -05:00
Steve Franke
f9e9bc01a1
Update some comments, delete obsolete files.
2019-06-05 10:17:59 -05:00
Steve Franke
97be1b46b9
Add more protection against the i0 crash that has occurred in getcandidates4.f90.
2019-06-04 14:53:45 -05:00
Steve Franke
fc4dcc6d88
Fix a bug that caused FT4 decoding to fail when widegraph Start freq was less than 200 Hz.
2019-05-27 16:34:53 -05:00
Steve Franke
8c371d7d66
Remove an obsolete routine.
2019-05-26 09:55:39 -05:00
Steve Franke
7e4de91626
Fix a comment.
2019-05-26 09:52:17 -05:00
Steve Franke
3bc5e538d2
FT4: Implement polynomial baseline fit.
2019-05-25 10:58:04 -05:00
Steve Franke
883c914d29
Make DT=0 mean that the first full symbol starts at t=0.5s. Formerly DT=0 corresponded to the beginning of the ramp-up symbol. Fix a bug that caused signals with large DT to wrap around instead of truncating them.
2019-05-24 20:09:00 -05:00
Joe Taylor
2ab4b59d88
Fix ft4sim_mult for 7.5 s T/R sequences.
2019-05-23 14:06:00 -04:00
Steve Franke
a9623703b3
FT4: Change Fortran code to NSPS=576 and make necessary accompanying
...
changes on the C++ side. Basically works except that Tx audio has
incorrect DT and audio is truncated at the end. Also, command line
decoding using JT9 is not as sensitive as decoding from within WSJT-X.
2019-05-22 17:02:15 -05:00
Steve Franke
80307b64ad
Add a temporary research tool.
2019-05-22 17:01:06 -05:00
Steve Franke
0668c4fce0
Improve sync at large DT.
2019-05-08 11:34:16 -05:00
Steve Franke
0a12b34ec5
Avoid a potential out-of-bounds error.
2019-04-30 08:54:42 -05:00
Steve Franke
561af7f411
Avoid zeroing cwave when it is not going to be used.
2019-04-20 09:37:36 -05:00
Steve Franke
2746338757
Measure time spent in subtract4.f90.
2019-04-18 17:19:56 -05:00
Steve Franke
e8d17a9898
FT4: Subtraction is basically working.
2019-04-18 14:16:39 -05:00
Steve Franke
be72461142
FT4: Some groundwork for subtraction.
2019-04-18 14:15:24 -05:00
Joe Taylor
b3f62276e7
Fix the DT values generated in ft4sim_mult.
2019-04-03 12:45:38 -04:00
Joe Taylor
9fe179d396
Fix ft8sim_mult to generate synchronous FT4 signals.
2019-04-03 11:48:57 -04:00
Joe Taylor
6ea9f4990d
Several tweaks to FT4 simulation and decoding procedures. Now -0.5 < DT < 0.5
2019-04-03 10:13:50 -04:00
Joe Taylor
013c06b6ca
Fix a probmel with decoding FT4 from .wav files.
2019-04-03 09:25:32 -04:00
Joe Taylor
e0d4c94cc1
Some very basic functionality for time-synchronized FT4.
2019-04-01 14:23:10 -04:00
Steve Franke
c7ec9b1927
Fix indenting. No functional changes.
2019-03-30 16:40:24 -05:00
Steve Franke
68f82c95de
FT4: Only do the big FFT once for each candidate. Duh.
2019-03-30 15:55:05 -05:00
Steve Franke
73efc09392
Speed up sync.
2019-03-28 14:34:03 -05:00
Steve Franke
5e1637a5db
Fix a bug and remove a redundant sanity check.
2019-03-28 14:01:30 -05:00
Joe Taylor
67b9f327a5
Merge branch 'release-2.1.0' of bitbucket.org:k1jt/wsjtx into release-2.1.0
2019-03-28 13:21:02 -04:00
Joe Taylor
54cd97f918
Protect against bad inferred candidate frequencies f0 in FT4 mode.
2019-03-28 13:07:37 -04:00
Steve Franke
fe8aa87401
Add some sanity checks to getcandidates4.f90
2019-03-28 11:13:26 -05:00
Steve Franke
3490c0d1e3
Merge branch 'release-2.1.0' of bitbucket.org:k1jt/wsjtx into release-2.1.0
2019-03-28 11:02:20 -05:00
Steve Franke
23c54540e7
Increase maximum wav file length to 20s.
2019-03-28 10:59:20 -05:00
Joe Taylor
6f00ec79a2
Merge branch 'release-2.1.0' of bitbucket.org:k1jt/wsjtx into release-2.1.0
2019-03-28 09:47:50 -04:00
Joe Taylor
cfb36395e0
Add some better usage examples for ft4sim.
2019-03-28 09:22:29 -04:00
Joe Taylor
580fce8320
Allow oddball file names for input to ft4d.
2019-03-28 09:21:01 -04:00
Steven Franke
a605ff4050
For now, limit noise level estimation to [300,2500] Hz.
2019-03-27 20:55:15 -05:00
Joe Taylor
43c38de884
Minor tweaks for FT4 debugging and possible tuning.
2019-03-26 14:00:32 -04:00
