RATE OF CONVERGENCE OF ADAPTIVE SUPPRESSION OF BROAD-BAND OSCILLATIONS IN ONE-DIMENSIONAL STRUCTURES

The rate of convergence of the adaptive process of suppression of broadband oscillations in one-dimensional structures, e.g., plane waves in ducts, is investigated as a function of the spectral density of the sound pressure in the incident wave. It is shown that the convergence rate decreases considerably for a wave representing the sum of a harmonic component and noise. A technique for increasing the convergence rate in this case is discussed.