Advances in Acoustics and Vibration / 2009 / Article / Fig 3

Research Article

Sequentially Adapted Parallel Feedforward Active Noise Control of Noisy Sinusoidal Signals

Figure 3

The optimum filter for the random noise can be way-off when compared to , that is, . The dashed circled regions show frequencies where deviates considerably from . Presence of tones in these regions will affect the performance of single-filter ANC methods.

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