wp-includes/ID3/module.audio.mp3.php:1801array public static function MPEGaudioChannelModeArray() { static $MPEGaudioChannelMode = array('stereo', 'joint stereo', 'dual channel', 'mono'); return $MPEGaudioChannelMode; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ID3/module.audio.mp3.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.