Abstract : HRHATRAC combines the last improvements regarding the fast subspace tracking algorithms with a gradient update for adapting the signal poles estimates. It leads to a line spectral tracker which is able to robustly estimate the frequencies, even in a noisy context, when the lines are close to each other and when a modulation occurs. HRATRAC is also successfully applied in this paper to a piano note recording.
Bertrand David, Roland Badeau, Gaël Richard. HRHATRAC Algorithm for Spectral Line Tracking of Musical Signals. International Conference on Acoustics, Speech, and Signal Processing ICASSP'06, 2006, Toulouse, France. pp.45-48. ⟨hal-00479785⟩
