Signal Artifact Detection and Elimination for Audio Output

摘要

A method and apparatus are provided for processing a received digital radio broadcast signal to efficiently remove signal interference artifacts from digital and/or analog signals by using signal quality information extracted from audio samples in one or more buffered audio frames to detect audio frames containing clipped noise artifacts and weaker noise artifacts and to selectively apply anti-interference processing to remove the signal interference artifacts.

主权项

1. A processor-implemented method for processing signal interference artifacts in a composite digital radio broadcast signal, comprising:
receiving a composite digital radio broadcast signal comprising a plurality of audio frames, each comprising a plurality of audio samples; storing a first audio frame in a buffer memory; retrieving a plurality of detection threshold parameters; analyzing a plurality of audio samples in the first audio frame using the plurality of detection threshold parameters to detect whether the first audio frame includes a clipped noise artifact; applying anti-interference processing to the first audio frame if the first audio frame includes the clipped noise artifact to mitigate any detected clipped noise artifact, thereby generating a filtered audio frame; and storing the filtered audio frame in the buffer memory.