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7 Commits

Author SHA1 Message Date
Silvano Seva 54aa794bf8 Changed file extension of all C++ only header files from .h to .hpp 2022-07-09 18:22:36 +02:00
Silvano Seva 34c90c2485 Moved FIR filter class to a dedicated header file 2022-07-09 18:07:42 +02:00
Silvano Seva 3988540b6c Changed coefficients for the 41-tap, 24kHz RRC filter to have unitary input-output gain 2022-05-27 21:48:47 +02:00
Niccolò Izzo 2d59658d60 Switch M17 Rx sample rate to 5SPS 
Due to the RRC computation sometimes violating the timing constraints,
we switched the M17 demodulator to 5 samples per symbol (24KHz), thus
dividing the processing time by four ar the number of samples halves as
well as the number of taps of the RRC.
Minor adaptation on the code followed.

TG-81
 2022-05-27 21:48:47 +02:00
Silvano Seva da5c453852 Implemented unpacking and decoding of M17 audio stream frames 2022-05-27 21:48:47 +02:00
Niccolò Izzo 4b498689f5 Replace RRC filter taps, update M17 testsuite 
RRC filter taps have been replaced with the ones generated by Wojciech,
a new baseband for the M17 demodulation testsuite has been generated,
using OpenRTX itself and some further minor changes.

TG-81
 2022-05-27 21:48:46 +02:00
Niccolò Izzo 876cb87d57 Move rrc filter into separate compilation unit 
By moving the rrc filter into a separate compilation unit with its own
header file, we can use it both in the modulator and in the demodulator.
 2022-05-27 21:48:46 +02:00