11 Commits

Author	SHA1	Message	Date
Jared Boone	e720bfb054	Use IFIR decimation for broadcast FM receiver.	2016-01-02 10:35:23 -08:00
Jared Boone	a02bfe55d0	Decimators for wider IFIR output bandwidth.	2016-01-02 10:34:17 -08:00
Jared Boone	549e5b9ddc	Unrolled FIR filters for more flexible baseband filtering (using IFIR technique).	2015-12-29 10:48:29 -08:00
Jared Boone	49215c3ae6	Remove garbage DSP filter code.	2015-12-28 15:49:47 -08:00
Jared Boone	ccd64f3cd9	Add function for c8->c16 decimate by two without fs/4 shift.	2015-11-19 12:20:20 -08:00
Jared Boone	100761481e	Fix inaccurate comment.	2015-11-06 09:40:05 -08:00
Jared Boone	86b068be62	Early calculation to reduce pressure on registers.	2015-11-06 09:40:04 -08:00
Jared Boone	424c0eac3f	FIRAndDecimateBy2Complex: expose decimation_factor, bring work function into class.	2015-11-06 09:40:04 -08:00
Jared Boone	cde15e4271	Generalize fir_and_decimate_by_2_complex_fast. ... Permit decimation_factors other than 2. Permit tap counts != 64 (but still must be multiple of 8). Half the amount of tap memory required. Performance is significantly degraded due to greater flexibility -- most likely due to separate sample buffer shift phase, instead of performing shift during output sample calculation.	2015-11-06 09:40:04 -08:00
Jared Boone	0f73d6061a	Remove old decimating FIR code.	2015-11-06 09:40:04 -08:00
Jared Boone	dc6fee8370	Initial firmware commit.	2015-07-08 08:39:24 -07:00