Digital room correction with BruteFIR
The Raspberry Pi is quite powerful even for advanced audio processing. One of the use cases we haven’t seen a lot in the past is digital room correction. This allows you to adapt your playback system to the specifics of your listening room. It basically consists of 3 steps:
- You measure the frequency response at your listening position.
- A software calculates correction filters.
- The playback system applies these correction filters during playback.
There are lots of different ways to implement this. One that is quite popular is the use of BruteFIR for playback. HiFiBerry user Tobias Wenig did a great job implementing, testing and documenting a BruteFIR plugin for Rythmbox. In general, a similar approach should also work for other music player systems.
Note that this is not a plug-and-play guide. We recommend to start reading a bit more about room correction and browsing through his Github repository. Then start playing around with the tools.
Did you implement something similar? Let us and other users know and post your projects, tips&tricks, guide or just your questions in our forum.