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Old 12-29-2016, 07:19 AM   #32
Xenakios
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Join Date: Feb 2007
Location: Oulu, Finland
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Quote:
Originally Posted by ReaDave View Post
which has the option of running the FFT as equal points per octave
The FFT analysis results can of course be displayed with any desired scaling of the data. But are you sure what that iPhone app is doing is actually doing the FFT analysis any differently than is usual? (The usual being, with way too much frequency resolution in the highest octaves than is wanted and poor resolution in the bass octaves...)

There are of course various alternative ways of doing the spectral analysis, with and without using FFT. The most advanced analysis methods tend to be closed source, proprietary technology.
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