I’ve become familiar with squig over the past 6 months or so and have used it to great value creating my own AutoEQ files for use in Wavelet primarily.
One thing I’ve not read about is the reasoning behind the normalization frequency often chosen by default at 500Hz.
I find it interesting to compare curves at other frequencies to help me better estimate the differences in energy across the range when comparing/deciding if a particular IEM may suit my tastes or not.
Do any of you know the logic or reasoning applied here to use 500Hz other than a specific frequency has to be the default?
I could be mistaken, but I think the idea of using a point between 1khz and 500hz is to simulate matching up with the Fletcher-Munson Curve, allowing you to better simulate how the FR [relative to other FR or targets] is perceived at a given volume rather than actual volume matching by relative db.
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Ah sure, makes good sense to focus on our most sensitive range.
I think that it also has a lot to do with being kind of a common reference, the same way that Middle A is for Piano and a lot of instruments (which happens to be @ 440hz). As they say, “Mids are where the music is” so 500hz is a solid basis.
I agree with the thought of using the common reference, 440Hz, more than human sensitivity…as Fletcher-Munson determined 2-5kHz to be be most sensitive. Equal-loudness contour - Wikipedia
Regardless, interesting and nice that we can choose whatever normalization Hz we wish in squid-land.
I like using 500Hz. However, for V shape sets I find it useful to normalize at 1kHz.
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