Configurable filter for processing television audio signals
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United States of America Patent
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Sep 3, 2013
Grant Date -
Dec 30, 2010
app pub date -
Sep 7, 2010
filing date -
Mar 24, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
Television audio signal encoders include a matrix that sums a left channel audio signal and a right channel audio signal to produce a sum signal. The matrix also subtracts one of the left and right audio signals from the other to produce a difference signal. The encoders also include a configurable infinite impulse response digital filter that selectively uses one or more sets of filter coefficients to filter the difference signal and/or the sum signals. Each selectable set of filter coefficients is associated with a unique filtering application to prepare the difference signal for transmission. Decoders with the matrix are also disclosed.
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