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phip1611 / spectrum-analyzer

An easy to use and fast `no_std` library (with `alloc`) to get the frequency spectrum of a digital signal (e.g. audio) using FFT.
MIT License
119 stars 19 forks source link

Check how Mathlab shifts zero frequencies to zero (normalization) #14

Closed phip1611 closed 3 years ago

phip1611 commented 3 years ago

https://www.mathworks.com/help/matlab/ref/fftshift.html

If possible, apply useful features to this crate.

phip1611 commented 3 years ago

https://www.gaussianwaves.com/2015/11/interpreting-fft-results-complex-dft-frequency-bins-and-fftshift/

But this is probably not in the responsibility of this crate but in higher level APIs.