Tuner

Tuner app for tuning musical instruments with features like:

* Detect pitch based on autocorrelation and FFT spectrum.

* Accuracy improvement by evaluating the spectrum phase information and polynomial fitting.

* Show how pitch changes over time.

* Basic instrument database (chromatic, guitar, bass, violin, …)

* Support for custom instruments

* Several temperaments like equal, just, Werckmeister, Kirnberger, …

* Non-12-tone temperaments (EDO 17, 19, …, 41, 53)

* Scientific settings like FFT window size, FFT window type, overlap and more.