Jared Boone
a1b9f4aa1b
Simplify, generalize, share int16_t taps copy function.
...
Also prevents compiler loop unrolling in non-critical code, for code size improvement.
2016-02-23 15:04:20 -08:00
Jared Boone
ac2320f0c5
Limit scope of some function variables.
2016-02-06 16:23:55 -08:00
Jared Boone
cff314cbc8
Convince compiler to not inline member constructors.
2016-02-03 19:59:41 -08:00
Jared Boone
f2dff16820
Use complex channel filter taps for AM/SSB.
2016-01-30 17:30:54 -08:00
Jared Boone
28e5b7e4af
Remove some filter constructors, reset Z on configure().
2016-01-29 17:06:22 -08:00
Jared Boone
e6f69c90f2
Reduce inlining of FIR configuration due to templating.
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80 bytes!
2016-01-04 11:20:28 -08:00
Jared Boone
b0855b3c4d
Pass buffers by reference to save significant text section code size.
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752 bytes!
2016-01-03 23:09:06 -08:00
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.
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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
