mirror of
https://github.com/TorqueGameEngines/Torque3D.git
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a745fc3757
added libraries: opus flac libsndfile updated: libvorbis libogg openal - Everything works as expected for now. Bare in mind libsndfile needed the check for whether or not it could find the xiph libraries removed in order for this to work.
54 lines
3 KiB
Text
54 lines
3 KiB
Text
Ambisonic decoder configuration presets are provided here for common surround
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sound speaker layouts. The presets are prepared to work with OpenAL Soft's high
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quality decoder. By default all of the speaker distances within a preset are
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set to the same value, which results in no effect from distance compensation.
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If this doesn't match your physical speaker setup, it may be worth copying the
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preset and modifying the distance values to match (note that modifying the
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azimuth and elevation values in the presets will not have any effect; the
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specified angles do not change the decoder behavior).
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Details of the individual presets are as follows.
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square.ambdec
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Specifies a basic square speaker setup for Quadraphonic output, with identical
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width and depth. Front speakers are placed at +45 and -45 degrees, and back
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speakers are placed at +135 and -135 degrees.
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rectangle.ambdec
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Specifies a narrower speaker setup for Quadraphonic output, with a little less
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width but a little more depth over a basic square setup. Front speakers are
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placed at +30 and -30 degrees, providing a bit more compatibility for existing
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stereo content, with back speakers at +150 and -150 degrees.
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itu5.1.ambdec
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Specifies a standard ITU 5.0/5.1 setup for 5.1 Surround output. The front-
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center speaker is placed directly in front at 0 degrees, with the front-left
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and front-right at +30 and -30 degrees, and the surround speakers (side or
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back) at +110 and -110 degrees.
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hexagon.ambdec
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Specifies a flat-front hexagonal speaker setup for 7.1 Surround output. The
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front left and right speakers are placed at +30 and -30 degrees, the side
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speakers are placed at +90 and -90 degrees, and the back speakers are placed at
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+150 and -150 degrees. Although this is for 7.1 output, no front-center speaker
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is defined for the decoder, meaning that speaker will be silent for 3D sound
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(however it may still be used with AL_SOFT_direct_channels or ALC_EXT_DEDICATED
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output). A "proper" 7.1 decoder may be provided in the future, but due to the
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nature of the speaker configuration will have trade-offs.
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hex-quad.ambdec
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Specifies a flat-front hexagonal speaker setup, plus an elevated quad speaker
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setup, for 7.1.4 Surround output. The front left and right speakers are placed
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at +30 and -30 degrees, the side speakers are placed at +90 and -90 degrees,
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and the back speakers are placed at +150 and -150 degrees. The elevated
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speakers are placed at an elevation of +35 degrees, with the top front left and
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right speakers placed at +45 and -45 degrees, and the top back left and right
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speakers placed at +135 and -135 degrees. Similar to 7.1, the front-center
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speaker is not used for 3D sound, but will be used as appropriate with
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AL_SOFT_direct_channels or ALC_EXT_DEDICATED.
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3D7.1.ambdec
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Specifies a 3D7.1 speaker setup for 3D7.1 Surround output. Please see
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docs/3D7.1.txt for information about speaker placement. Similar to 7.1, the
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front-center speaker is not used for 3D sound, but will be used as appropriate
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with AL_SOFT_direct_channels or ALC_EXT_DEDICATED.
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