Circuit for suppression of short-lived noise-phenomena in a digital audio signal
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United States of America Patent
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Jan 14, 1997
Grant Date -
N/A
app pub date -
Mar 28, 1994
filing date -
Apr 3, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a circuit for suppressing short-lived noise phenomena in a digital audio signal, in particular during a temporary test reception of another transmitter, the audio signal is multiplied by a factor which, prior to the appearance of the noise phenomenon, is brought from a maximum value to a minimum value in accordance with a predetermined time function, and at the end of the noise phenomenon, is returned to a maximum value. The invention has special application to the Radio Data System defined by the European Broadcasting Union, and the testing of 'Alternative Frequencies' in that system.
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