A modified filterbank for tracking multiple sinusoidal signals

A modified adaptive filterbank structure is presented to track multiple sinusoids which is based on the resonator-in-a-loop filterbank structure [1]. The advantages of this configuration over the previous resonator-in-a-loop filterbank structure are two-fold: its better enhanced transfer function characteristics, and the easier and more accurate determination of its signal-to-noise enhancement ratio. The simulation results using both the filterbank structures are presented and confirm the improved performance of the new filterbank.