Noise reduction circuit for television multi-channel sound

Details Noise reduction circuit for television multi-channel sound Noise reduction circuit for television multi-channel sound

H - Electricity

04

N

350/97

H04N 5/60 (2006.01) H03G 9/02 (2006.01) H04N 7/06 (2006.01)

Patent

CA 1242270

ABSTRACT A television receiver includes an audio signal processing arrangement for expanding a second audio program (SAP) signal compressed in accordance with the "dbx" system in a relatively simple manner. The signal processing arrangement includes a first filter for providing a first amount of deemphasis. A controllable gain amplifier has its input coupled to the filter and its gain controlled by a filtered signal representative of its input signal. A second filter at the amplifier output provides a second amount of deemphasis.

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