Question 1

What is CamillaFIR?

Accepted Answer

CamillaFIR is an automatic FIR filter maker / generator that converts measurement data (for example REW exports) into convolution-ready FIR filters, primarily WAV filters plus companion summary/config files, for DSP engines such as CamillaDSP, Roon Convolution, and Equalizer APO.

Question 2

What is a FIR filter maker / generator?

Accepted Answer

A FIR filter maker (or generator) is a tool that creates FIR convolution filters from measurement data or a target response. The resulting FIR files can be loaded into convolution engines to apply room correction, speaker correction, or crossover/phase alignment.

Question 3

Does CamillaFIR work with REW measurements?

Accepted Answer

Yes. CamillaFIR is designed to use measurement data exported from Room EQ Wizard (REW) and generate FIR correction filters based on that data.

Question 4

Where can I download CamillaFIR?

Accepted Answer

You can download the latest version from the GitHub Releases page: https://github.com/VilhoValittu/CamillaFIR/releases

Question 5

What output formats does CamillaFIR export?

Accepted Answer

CamillaFIR currently exports convolution-ready FIR WAV filters together with summary and config files inside the ZIP package.

Question 6

Can I use CamillaFIR with CamillaDSP?

Accepted Answer

Yes. CamillaFIR output FIR WAV files can be used in CamillaDSP's convolution block. Always verify gain staging to avoid clipping.

Question 7

Can I use CamillaFIR with Roon Convolution?

Accepted Answer

Yes. Roon supports convolution filters. Export the convolution-ready FIR WAV from CamillaFIR and load it into Roon's Convolution settings.

Question 8

Can I use CamillaFIR with Equalizer APO?

Accepted Answer

Yes, if you use Equalizer APO's convolution capability. Load the exported FIR WAV filter and ensure preamp/headroom settings prevent clipping.

Question 9

Is FIR better than IIR (PEQ)?

Accepted Answer

It depends on the goal. FIR offers more precise magnitude shaping and can support linear-phase or mixed-phase strategies via convolution. IIR/PEQ is lighter and often sufficient for simple magnitude correction. FIR is typically preferred when you want more control over time/phase behavior.

Question 10

Does CamillaFIR support linear-phase filters?

Accepted Answer

Yes. CamillaFIR can generate linear-phase style FIR filters when that fits your use case.

Question 11

Does CamillaFIR support mixed-phase correction?

Accepted Answer

Yes. Mixed-phase workflows aim to balance time-domain behavior and correction effectiveness, often providing a more practical solution in real systems where latency and impulse behavior matter.

Question 12

What is a safe maximum boost for correction filters?

Accepted Answer

As a general safe starting point, keep maximum boost around +3 dB. Higher boost (for example +8 dB) can demand much more from amplifiers and speakers and increases the risk of distortion or clipping, especially in the bass.

Question 13

Should I try to fix deep nulls with FIR correction?

Accepted Answer

Usually no. Deep nulls are often caused by room/speaker-listener geometry and reflections. Boosting them can waste headroom without improving the real in-room response. It is typically better to address nulls with placement, multiple subs, or room treatment.

Question 14

Do I need to re-measure after applying the FIR filter?

Accepted Answer

Yes. Always verify by re-measuring with the filter active. This confirms that the correction behaves as expected and that gain staging/headroom is safe.

Question 15

How should I export measurements from REW for CamillaFIR?

Accepted Answer

Before measuring, load your microphone calibration file in REW. For TXT export, include Frequency, Magnitude, and Phase. For WAV/IR workflow, use Mono, float32, Normalise, and Place t=0 (256).

CamillaFIR FAQ

General

What is CamillaFIR?

What is a FIR filter maker / generator?

Where can I download CamillaFIR?

How should I export measurements from REW for CamillaFIR?

Compatibility

Does CamillaFIR work with CamillaDSP?

Does CamillaFIR work with Roon Convolution?

Does CamillaFIR work with Equalizer APO?

FIR vs IIR

Is FIR better than IIR (PEQ)?

Does CamillaFIR support linear-phase filters?

Does CamillaFIR support mixed-phase correction?

Safety and best practices

What is a safe maximum boost?

Should I fix deep nulls?

Do I need to re-measure?

Disclaimer

Next Steps