Noise reduction apparatus

Details Noise reduction apparatus Noise reduction apparatus

H - Electricity

01

B

325/120

H01B 1/10 (2006.01) H03G 3/34 (2006.01) H03G 5/00 (2006.01) H04B 1/10 (2006.01)

Patent

CA 1298352

NOISE REDUCTION APPARATUS ABSTRACT OF THE DISCLOSURE A noise reduction apparatus in which an input signal is supplied to a first signal path (2) including a variable low-pass filter (2) and a second signal path (1), a control circuit (4) control is such that a cut-off frequency of the variable low-pass filter (2) is varied in accordance with a frequency of the input signal S(1), and an output signal is obtained from the first signal path when noise is generated and from the second signal path when noise is not generated.

527742

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