New DC block filter implementation using fixed-point math and guaranteeing
zero DC component on the output signal.
Signed-off-by: Silvano Seva <silseva@fastwebnet.it>
Restructured the M17Demodulator class and rewritten the
demodulator logic to have a more solid lock on the
baseband stream. This fixes the long standing bug of the
demodulator causing random losses of lock even when
receiving a solid baseband stream.