Detection of audio channel configuration

摘要

For an audio file that includes multiple channels of audio data, a novel device for detecting the configuration of the audio channels in the multi-channel audio file is presented. The device performs one or more algorithms to determine whether two or more channels are related. Such algorithms are used to distinguish stereo recordings from dual mono recordings. The algorithms are also used to detect any number of related channels, such as distinguishing six related channels from a set of surround sound microphones versus six unrelated channels (e.g., mono or a mixture of stereo and mono audio channels, etc.) These algorithms compare audio channels in pairs in order to determine which channels are sufficiently related as to constitute a stereo pair or a group.

主权项

1. A non-transitory computer readable medium storing instructions for detecting an audio channel configuration, which when executed by one or more processing units performs a method, the method comprising:
receiving a multi-channel audio file; determining an audio signal level for each channel in the multi-channel audio file; identifying channels containing usable audio content, wherein the identifying includes a determination whether each channel comprises the audio signal level of at least a threshold signal level; and using the channels identified as containing usable audio content, determining a comparison score between each channel based on the usable audio content; identifying a pairing of channels based on the comparison score.