# Side-chained compression?

**URL:** <https://in-thread.sonic-pi.net/t/side-chained-compression/2989>\
**Category:** Support, Help & Resources\
**Created:** [November 27, 2019, 1:10am UTC](https://in-thread.sonic-pi.net/t/side-chained-compression/2989 "2019-11-27T01:10:26Z")\
**Posts on this page:** 1\
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**Author:** ![Martin](https://dub1.discourse-cdn.com/flex017/user_avatar/in-thread.sonic-pi.net/martin/32/157_2.png) [@Martin](https://in-thread.sonic-pi.net/u/Martin)\
**Post date:** [November 27, 2019, 5:08am UTC](https://in-thread.sonic-pi.net/t/side-chained-compression/2989/2 "2019-11-27T05:08:18Z")

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Hi @oheydrew,

I am pretty sure that there is no such thing as ‘sidechain compression’ currently in Sonic Pi. But you may direct e. g. a certain live loop (or thread) to a certain output and route this into an external compressor using `with_fx :sound_out` ([see this example setup for Linux](http://in-thread.sonic-pi.net/t/separate-output-channels-for-live-loops-or-buffers/1028/9)).

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