Guitar Chord Recognition Algorithm?

Question

Whats a good digital signal processing algorithm that is good on guitar chords? Since Fast Fourier Transform I think only is accurate on single notes played on the guitar bu

Answer 1

There are some reasonably successful tools that use the DFT (FFT), but they do lots of processing after calculating the DFT.

Try this link for a summary the current state of the art, or google "Chordino" or "Chordata" for open source chord extraction algorithms.