How can I do real-time pitch detection in .Net?

Question

I want to make a program that detects the note that is being played in front of the microphone. I am testing the FFT function of Naudio, but with the tests that I did in audacit

Answer 1

You are likely getting thrown off by harmonics. Have you tried testing with a sine wave to see if your NAudio's FFT is in the ballpark?

See these references: http://cnx.org/content/m11714/latest/

http://www.gamedev.net/community/forums/topic.asp?topic_id=506592&whichpage=1�

Line 48 in Spectrum.cpp in the Audacity source code seems to be close to what you want. They also reference an IEEE paper by Tolonen and Karjalainen.