Active cancellation of noise or vibrations

Details Active cancellation of noise or vibrations Active cancellation of noise or vibrations

G - Physics

10

K

G10K 11/16 (2006.01) G10K 11/178 (2006.01)

Patent

CA 2117803

2117803 9321688 PCTABS00027 An active noise cancellation system processes a residual signal (r), generated by the interaction of a noise signal (p) and a cancelling signal (s), in the frequency domain so as to produce a new cancelling signal. A Fourier transformer (5, 8) operating in accordance with a moving discrete Fourier transform algorithm is used to produce a frequency domain representation of the residual signal.

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