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Pipewire gives many ways to do post-processing of the sound generated by an application. One of the frequent use cases is to add reverb, room acoustics or virtual surround of multichannel audio over 2 headphone channels.
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Below is a rather simple way.
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There is the [filter-chain](https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Filter-Chain) module to implement this in the native and recommended way.
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Below is an alternative way.
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## Virtual Surround using JConvolver
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