Method and device for determinig the sound operational mode of a radio signal

摘要

The method involves defining a metric for the similarity of the signals of two audio channels. The audio mode is determined based on a value of the metric determined from the signals of the audio channels. The audio mode has two channels of audio if the metric exceeds a first threshold. The audio mode is mono if the metric exceeds a higher threshold and stereo if it lies between the thresholds. An Independent claim is included for an apparatus for determining the audio mode of a radio signal.