Literature Review

• Depalle's iterative parameter estimation
  • Uses complex least squares, iterates between updated estimates of frequencies and amplitudes/phases
  • Linearizes the frequency components using non-sidelobe window
  • Klapuri's extension to harmonic sources

• Problems
  • Low rank matrix when partials collide or having same amplitudes/phases
  • Complex number
  • Restriction to the use of non-sidelobe window
  • Rather unstable