About the octave error.

[StephenChips]

Hello. I am using your library in my RN project and I find this library will output doubled frequency sometimes. For example when I play A3 (220Hz) on my guitar, it will give me A4 (440Hz) sometimes. Is there a way to eliminate this kind of error?

Since your library is the core of my program, I'd like to collaborate on your project! However since I don't know anything about DSP, I need your aids.

[yigithanyucedag]

Hi, sorry for the late reply; I've been a bit busy lately. This type of misdetection is a natural result of autocorrelation algorithms. Any changes to this algorithm would not only lead to significant performance drops but also fail to deliver the desired outcome. A better solution would be to implement more advanced pitch detection algorithms, such as YIN or PYIN, and make them available as a parameter. However, such an implementation requires thorough testing, and I currently don't have the time for that. I'd be very happy if you or someone else would like to take on this task.