e9263c9c9d
fsk: fix noise <= EPSILON handling
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Handle noise <= EPSILON better; fixes (im)perfect test cases on i386.
2012-08-19 15:58:08 -07:00
f81f069d95
minimodem: --limit (2.3) sets fsk_confidence_search_limit
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Significant performance enhancements from fsk_confidence_search_limit:
runs far fewer FFT's when --limit (default 2.3) is less than INFINITY.
2012-08-18 21:24:01 -07:00
e1b055cf4f
fsk: AVOID_TRANSIENTS noise limiter re-enabled
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Algo #5 needs this, just as #3 did.
2012-08-18 19:15:33 -07:00
076343a9c3
fsk: MIN_MAGNITUDE noise limiter
2012-08-18 19:15:07 -07:00
725355aa43
fsk: performance: do not bzero fftin
2012-08-18 16:52:07 -07:00
cf9ba20ee0
fsk: confidence algo #5 (SNR)
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Computes SNR confidence value, where "signal" is the magnitude of the FSK
driven frequency, and "noise" is the magnitude of the non-driven frequency.
(Also includes unused algo #4 code, which may not compile anymore.)
2012-08-14 22:31:30 -07:00
bca34371e1
fsk: do not consider the stop bit twice
2011-07-08 13:00:50 -07:00
25e6e41939
fsk: no FSK_MIN_STRENGTH limitation
2011-07-08 09:26:02 -07:00
845c3e1be6
fsk: CONFIDENCE_ALGO 3 (worst divergence)
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CONFIDENCE_ALGO 3 (worst divergence):
- single worst diverging bit in the frame
- amplitude normalized
- drop AVOID_TRANSIENT
2011-07-08 08:03:31 -07:00
cb3e81e576
fsk debug
2011-07-08 07:31:54 -07:00
fd0546d80d
fsk expect_bits
2011-07-07 13:31:10 -07:00
2d1310febf
reduce FSK_MIN_STRENGTH to 0.005
2011-06-23 23:05:35 -07:00
702c0be223
minimodem licenced as GPL3+
2011-06-22 17:10:50 -07:00
3a22116159
fsk: new confidence algo
2011-06-22 10:06:19 -07:00
2b014b50fb
fsk_find_frame: search across an entire bit
2011-06-21 22:30:37 -07:00
243af5da56
fsk: floating point band_width
2011-06-21 20:27:51 -07:00
9002cf2694
fsk: confidence considers start/stop bits
2011-06-21 12:13:47 -07:00
775ef649e1
fsk_bits_analyze / fsk_frame_analyze rework
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- confidence calc only uses data bits metrics (for good or ill)
2011-06-12 12:42:08 -07:00
e7b16118e4
fsk: respect n_data_bits
2011-06-10 16:19:11 -07:00
439b606a97
minimodem 0.2.0
2011-06-08 14:00:22 -07:00
54f8efde20
minimodem: use fsk.h API
2011-06-08 13:21:12 -07:00
35121ab63c
fsk: move advance to top of loop
2011-06-06 21:36:23 -07:00
0509066f34
fsk cleanup
2011-06-06 21:33:50 -07:00
336a057233
fsk: carrier autodetect for 300 baud
2011-06-05 12:10:59 -07:00
2ea1085b45
fsk cleanup
2011-06-05 08:49:06 -07:00
cd6ab7f77d
fsk: noconfidence_bits increase to 20
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... and probably should be set even higher, to allow for even longer
idle-bit (stop-bit) periods.
2011-06-05 08:44:47 -07:00
3522182394
fsk new confidence equation
2011-06-04 16:31:26 -07:00
1e96d42d16
fsk_bit_analyze refactor
2011-06-04 15:55:22 -07:00
0e888d2bf2
fsk cleanup
2011-06-04 14:41:41 -07:00
08654e8466
fsk: AVOID_TRANSIENTS allows for miniscule FSK_MIN_CONFIDENCE
2011-06-04 14:15:54 -07:00
71baa6f916
fsk cleanup
2011-06-04 11:56:26 -07:00
b73f7fb5b8
fsk: cleanup
2011-06-04 09:57:33 -07:00
80c8a62073
fsk: multibit decoder
2011-06-03 23:26:00 -07:00
Kamal Mostafa