Change the audio filters to use a double instead of rationals for the
ratio of output to input size. The rationals could overflow when
calculating the overall ratio of a filter chain and gave no real
advantage compared to doubles.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@24916 b3059339-0415-0410-9bf9-f77b7e298cf2
- a passive locking mechanism to enable the matrix to switch between active
and passive mode, which enhances the stereo image.
- a center front cancellation algorithm that damps the cross-talk if the
sound is coming predominantly from center (e.g. if there is dialogue).
These two new features should enhance the quality of surround downmix
noticeably.
Also a correction to the active gain control is included. The previous
implementation of Lt + Rt/Lt - Rt AGC should be fine in most cases, but the
calculation was inconsistent (gain unitarity is not guaranteed to be
preserved).
Signed off by Yue Shi Lai <ylai@users.sourceforge.net>
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@15125 b3059339-0415-0410-9bf9-f77b7e298cf2
- Bass compensation gain corrected (which was set too low), now the
sound should be even more transparent
- A (unified) dual axes active matrix decoder with adaptive steering
- capable of decoding matrix surround encoded inputs, with stereo rear
- capable of decoding matrix encoded rear center
- Purely stereo mixing without unneccessary rear filter calculations
- The decoding structure message is moved, because at the old place it
gave incorrect messages.
Patch by Yue Shi Lai <ylai@users.sourceforge.net>
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@15083 b3059339-0415-0410-9bf9-f77b7e298cf2
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