43 lines
2.3 KiB
Plaintext
43 lines
2.3 KiB
Plaintext
Ambisonic decoder configuration presets are provided here for common surround
|
|
sound speaker layouts. The presets are prepared to work with OpenAL Soft's high
|
|
quality decoder. By default all of the speaker distances within a preset are
|
|
set to the same value, which results in no effect from distance compensation.
|
|
If this doesn't match your physical speaker setup, it may be worth copying the
|
|
preset and modifying the distance values to match (note that modifying the
|
|
azimuth and elevation values in the presets will not have any effect; the
|
|
specified angles do not change the decoder behavior).
|
|
|
|
Details of the individual presets are as follows.
|
|
|
|
square.ambdec
|
|
Specifies a basic square speaker setup for Quadrophonic output, with identical
|
|
width and depth. Front speakers are placed at +45 and -45 degrees, and back
|
|
speakers are placed at +135 and -135 degrees.
|
|
|
|
rectangle.ambdec
|
|
Specifies a narrower speaker setup for Quadrophonic output, with a little less
|
|
width but a little more depth over a basic square setup. Front speakers are
|
|
placed at +30 and -30 degrees, providing a bit more compatibility for existing
|
|
stereo content, with back speakers at +150 and -150 degrees.
|
|
|
|
itu5.1.ambdec
|
|
Specifies a standard ITU 5.0/5.1 setup for 5.1 Surround output. The front-
|
|
center speaker is placed directly in front at 0 degrees, with the front-left
|
|
and front-right at +30 and -30 degrees, and the surround speakers (side or
|
|
back) at +110 and -110 degrees.
|
|
|
|
hexagon.ambdec
|
|
Specifies a flat-front hexagonal speaker setup for 7.1 Surround output. The
|
|
front left and right speakers are placed at +30 and -30 degrees, the side
|
|
speakers are placed at +90 and -90 degrees, and the back speakers are placed at
|
|
+150 and -150 degrees. Although this is for 7.1 output, no front-center speaker
|
|
is defined for the decoder, meaning that speaker will be silent for 3D sound
|
|
(however it may still be used with AL_SOFT_direct_channels or ALC_EXT_DEDICATED
|
|
output). A "proper" 7.1 decoder may be provided in the future, but due to the
|
|
nature of the speaker configuration will have trade-offs.
|
|
|
|
3D7.1.ambdec
|
|
Specifies a 3D7.1 speaker setup for 7.1 Surround output. Although it's for 7.1
|
|
output, the speakers for such a configuration need to be placed in different
|
|
positions for proper results. Please see docs/3D7.1.txt for more information.
|