 Joris van Rantwijk
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c2de34860a
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Implement command-line option for LNA gain.
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2014-01-26 20:31:38 +01:00 |
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Joris van Rantwijk
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5744e0affd
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Tried reducing PLL bandwidth; does not improve stereo sound.
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2014-01-23 21:48:21 +01:00 |
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Joris van Rantwijk
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860c2db7bd
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Remove unnecessary special case for PPS output.
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2014-01-22 23:11:39 +01:00 |
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Joris van Rantwijk
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0ffd44f3fd
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More pilot frequency measurements.
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2014-01-22 23:10:23 +01:00 |
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Joris van Rantwijk
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fda975b1ff
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Measured radio2 pilot frequency.
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2014-01-20 07:50:15 +01:00 |
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Joris van Rantwijk
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4bff1f823b
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Tested 19 kHz stability for radio3.
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2014-01-19 20:00:17 +01:00 |
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Joris van Rantwijk
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6d735bb0f0
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Pilot PPS logging works.
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2014-01-19 15:49:43 +01:00 |
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Joris van Rantwijk
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f6bca05bf0
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Prepare pilot PLL to produce PPS events.
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2014-01-19 12:19:19 +01:00 |
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Joris van Rantwijk
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cfc5e07db6
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Fix incorrect use of uint8_t, FILE, etc. outside std namespace.
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2014-01-19 11:43:22 +01:00 |
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Joris van Rantwijk
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ddcb6a8500
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Implement k, M suffixes for frequency and sample rates.
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2014-01-18 23:44:25 +01:00 |
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Joris van Rantwijk
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d19123946e
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Update TODO list.
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2014-01-18 22:24:21 +01:00 |
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Joris van Rantwijk
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761b368282
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Set RTL AGC mode by default (no improvement), with command-line option to disable.
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2014-01-18 20:44:17 +01:00 |
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Joris van Rantwijk
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ff985cd623
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Experimented with IF gain and AGC mode; does not seem to help much.
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2014-01-12 22:08:22 +01:00 |
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Joris van Rantwijk
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4619295d9a
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Simulated effects of IF filter bandwidth.
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2014-01-12 18:12:53 +01:00 |
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Joris van Rantwijk
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13219ed6ba
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Reorganize notes; measure effect of LNA gain, ADC calibration.
Python code to experiment with IF filtering.
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2014-01-11 23:19:20 +01:00 |
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Joris van Rantwijk
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f1b4dc55d6
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Add Python functions to demodulate FM and to measure quality of 19 kHz pilot.
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2014-01-10 21:32:27 +01:00 |
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Joris van Rantwijk
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a256775f28
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Update notes.
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2014-01-09 21:18:44 +01:00 |
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Joris van Rantwijk
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f9d6cfd0d0
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Add comments to Python code.
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2014-01-05 22:02:08 +01:00 |
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Joris van Rantwijk
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6bce6702d2
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Fix mistake in note about forbidden sample rate range.
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2014-01-05 22:01:22 +01:00 |
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Joris van Rantwijk
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d1593544a4
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Reject IF sample rates 900kS/s or lower because RTL chip does not support it.
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2014-01-05 21:57:53 +01:00 |
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Joris van Rantwijk
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7948164205
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Better handling of "-d list".
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2014-01-05 21:57:53 +01:00 |
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Joris van Rantwijk
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6fd7c91e52
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Print device name on stderr.
When invalid device index specified, print list of detected devices.
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2014-01-05 21:57:53 +01:00 |
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Joris van Rantwijk
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357451f639
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More notes about gain and filters.
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2014-01-05 21:56:06 +01:00 |
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Joris van Rantwijk
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32dcfdd57f
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Fix bug in Python code for reading raw samples.
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2014-01-05 16:43:38 +01:00 |
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Joris van Rantwijk
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d4e12c75ce
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Add notes. Start building Python module with useful algorithms.
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2014-01-05 16:33:05 +01:00 |
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Joris van Rantwijk
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c71a39d3d2
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Trivial cleanups in header files.
Print newline before message in signal handler.
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2014-01-03 22:00:31 +01:00 |
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Joris van Rantwijk
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7f1a8bb1d7
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Write valid .WAV header with dummy sample count at start of run.
As a result, the .WAV file is somewhat usable even during the recording run.
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2014-01-03 18:50:12 +01:00 |
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Joris van Rantwijk
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829e39594d
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Print status message saying where audio output is going.
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2014-01-03 18:10:37 +01:00 |
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Joris van Rantwijk
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8a2cef5e35
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Implement .WAV file writing based on Sidney's WavFile.h.
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2014-01-03 18:07:28 +01:00 |
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Joris van Rantwijk
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3e8c2232d2
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Update TODO list.
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2014-01-01 17:53:22 +01:00 |
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Joris van Rantwijk
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f24f42755d
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Update todo list.
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2014-01-01 12:04:38 +01:00 |
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Joris van Rantwijk
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e650df4bc2
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Add README, add license statement.
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2014-01-01 12:04:30 +01:00 |
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Joris van Rantwijk
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f6b0d2b546
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Support large output files.
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2013-12-31 20:07:46 +01:00 |
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Joris van Rantwijk
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0091737339
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Switch to cmake for building.
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2013-12-31 20:07:11 +01:00 |
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Joris van Rantwijk
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47525ef796
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Very slight speed improvement in FIR filters.
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2013-12-31 15:19:14 +01:00 |
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Joris van Rantwijk
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cecf407d00
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Stereo decoding works. WHEEE!!
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2013-12-31 00:56:53 +01:00 |
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Joris van Rantwijk
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351e22f9bb
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Code cleanups.
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2013-12-31 00:29:52 +01:00 |
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Joris van Rantwijk
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f119f2f72c
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Stereo pilot PLL now working. (Stereo decoding not yet implemented.)
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2013-12-31 00:07:14 +01:00 |
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Joris van Rantwijk
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620dba5d13
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Increase filter order for baseband downsample filter. Add comments.
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2013-12-30 15:58:17 +01:00 |
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Joris van Rantwijk
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48d605243b
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Fix bug in option parsing.
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2013-12-30 15:24:56 +01:00 |
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Joris van Rantwijk
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f371d1bef3
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Finished pilot PLL (not tested).
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2013-12-30 11:22:21 +01:00 |
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Joris van Rantwijk
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f0d58eac10
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Reduce IF bandwidth to 100 kHz.
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2013-12-29 18:50:56 +01:00 |
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Joris van Rantwijk
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c3778fb920
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Remove distinction between Coeff and Sample types; they are always the same floating point type.
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2013-12-29 00:44:10 +01:00 |
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Joris van Rantwijk
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70ba5520ca
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Clean exit on Ctrl-C or SIGTERM.
Use double instead of float for real-valued samples.
Start implementation of stereo pilot PLL.
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2013-12-29 00:34:13 +01:00 |
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Joris van Rantwijk
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0ec6475902
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Add ALSA output.
Cleanups.
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2013-12-29 00:25:58 +01:00 |
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Joris van Rantwijk
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6e08f8a55c
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Receiver working. Produces reasonable mono audio.
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2013-12-25 08:59:10 +01:00 |