4 ms·
You’ll need a calibration curve for the microphone. Even of the same model, there is a lot of variance.
by tibbon 4y ago
You’ll need a calibration curve for the microphone. Even of the same model, there is a lot of variance.
- doctorhandshake 4y agoThere’s an example of doing this on the readme- scroll way down
- gh02t 4y agoMiniDSP makes some calibration mics that run about 60 bucks. I used them as a cheap instrument for some lab work where I needed a calibrated mic a while back and was very impressed with their performance for the price. They ship with a little code that you can use to retrieve the calibration curve from the factory, and I know a lot of people use them for hifi calibration with REW.
- willis936 4y agoAnyone interested in this area should also know that above ~2 kHz it doesn't matter what you do for magnitude equalization because you'll be dominated by sub mm variations in position and direction. The only way to get any amount of repeatability above 2 kHz is with IEMs.
- erdewit 4y agoThis is dealt with by smoothing the spectrum in a way to preserves the power density. The constructive and destructive interference then cancel each other out.
- Gracana 4y agoWhat does "smoothing the spectrum" mean? What operations are being performed?
- danuker 4y agoI'd guess: Fourier transform, a power density preserving blur convolution, then inverse Fourier transform. But I am not familiar with the field of signal processing.
- willis936 4y agoThat's my guess too but my hunch is that would sound like absolute crap. Intentional IMD. Something to experiment with.