Chris Robinson
b3ba90f5fa
Use transposed direct form 2 for the UHJ all-pass filters
...
This has one extra multiply, but avoids two moves and uses almost half as much
memory for the encoder state.
2018-04-22 03:34:29 -07:00
Chris Robinson
e10595df31
Pre-calculate the squares of the UHJ filter coefficients
2018-04-22 02:39:14 -07:00
Chris Robinson
7c0e68a33e
Store the filter history in local variables
...
Despite being marked as restrict (and const for src) to mark the pointers as
being non-aliased, it seems the compiler optimizes better this way.
2018-03-14 17:27:41 -07:00
Chris Robinson
d547f52d8f
Move the UNEXPECTED macro to the main header and rename it
2018-01-07 22:20:08 -08:00
Chris Robinson
959812ee13
Use ALsizei in a few more places
2017-01-16 08:59:08 -08:00
Chris Robinson
2f3cffa517
Improve the UHJ encoder's allpass processing loops
2016-07-14 01:42:02 -07:00
Chris Robinson
859cc703e7
Use the proper left and right channels for UHJ output
2016-03-10 22:56:44 -08:00
Chris Robinson
9fdca9e29f
Remove the extra scaling on W for UHJ encoding
...
There seems to be some inconsistent info about whether W should be scaled by
sqrt(2) for encoding. Not applying the scaling results in a wider stereo image,
which seems more appropriate.
2016-03-01 15:48:23 -08:00
Chris Robinson
adce176a35
Separate the left and right output writes with UHJ encoding
2016-02-27 11:38:40 -08:00
Chris Robinson
67f086d1d4
Add a function to encode 2-channel UHJ from B-Format
2016-02-26 14:51:56 -08:00
