9dbcc39c6e
Update biquad documentation.
2020-01-29 19:01:04 +10:00
c8b6fdaf2c
Use fixed point arithmetic with s16 biquads.
2020-01-29 18:50:50 +10:00
68b960215f
Update old comments.
2020-01-28 22:03:47 +10:00
b9c2509d78
Fix an overflow bug in the s16 biquad pipeline.
2020-01-28 21:54:15 +10:00
040dcf8d2c
Add documentation for low-pass filters.
2020-01-28 21:49:33 +10:00
b97c6fd35b
Remove the old direct form 1 biquad code.
2020-01-28 21:19:14 +10:00
8a44789840
Remove the unnecessary config member from ma_lpf.
...
This is never actually used internally and saves a bit of memory.
2020-01-28 20:42:59 +10:00
42095a3e5a
Add documentation for biquads.
2020-01-28 20:41:41 +10:00
e525d457c9
Change biquad filter to use transposed direct form 2.
...
This change reduces memory usage by removing half the number of delay
registers.
This commit also sets up some infrastructure for future work on a fixed
point implementation. Both the floating and fixed point implementations
will run on a 32-bit pipeline for now.
2020-01-28 20:14:55 +10:00
5d3ed8687e
Bug fixes to the linear resampler.
...
This changes the the lpfCutoffFrequency config variable from a uint32
to a double. This is required because we simplify the sample rate
fraction which cant result in cases where the cutoff frequency is too
aggressively rounded down due to dividing tiny integers.
2020-01-27 18:12:25 +10:00
13a5512879
Work in progress on the linear resampler.
2020-01-26 08:51:53 +10:00
811e438d1b
Add support for reinitialization of low-pass and biquad filters.
2020-01-20 19:01:42 +10:00
7b27cda74a
Add support for s16 format to biquad and low-pass filters.
2020-01-18 17:23:36 +10:00
705e54c69a
Add support for s16 format to the linear resampler.
2020-01-18 17:12:30 +10:00
7d37789418
Resampling and LPF work.
2020-01-18 14:36:12 +10:00
11d752ad78
Untested work in progress on the improved resampler.
2020-01-14 21:50:01 +10:00
2b526f6945
Add experimental code for biquad and low-pass filters.
2020-01-09 11:27:57 +10:00
David Reid