# Acoustics Simulation

**URL:** <https://community.freefem.org/t/acoustics-simulation/315>\
**Category:** General Discussion\
**Created:** [March 28, 2020, 11:04am UTC](https://community.freefem.org/t/acoustics-simulation/315 "2020-03-28T11:04:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ChrisK](https://avatars.discourse-cdn.com/v4/letter/c/6de8d8/32.png) [@ChrisK](https://community.freefem.org/u/ChrisK)\
**Post date:** [March 28, 2020, 11:04am UTC](https://community.freefem.org/t/acoustics-simulation/315/1 "2020-03-28T11:04:43Z")

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Hello,  
I am a relatively new user of FreeFEM.  
I want to simulate acoustics in a room excited by a gearbox.  
what will be the desired boundary conditions to find pressure field?  
Any idea which should be the value to impose on the gearbox outer surface?

Thanks

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**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\
**Post date:** [December 9, 2020, 4:40pm UTC](https://community.freefem.org/t/acoustics-simulation/315/2 "2020-12-09T16:40:17Z")

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Sorry for the very late answer, but this is a problem of modélisation not a problem of freefem++.