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VDOWNMIX PLUGIN
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===============
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The vdownmix plugin is a downmixer from 4-6 channels to 2-channel
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stereo headphone output. This plugin processes the input signals with
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a simple spacialization, so the output sounds like a kind of "virtual
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surround".
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For example, define the below:
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pcm.!surround51 {
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type vdownmix
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slave.pcm "default"
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}
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pcm.!surround40 {
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type vdownmix
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slave.pcm "default"
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}
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and the outputs from video player to these PCMs are converted to the
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default 2.0 output with a proper downmix.
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The accepted format is currently only S16.
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