wp-includes/ID3/module.audio.dts.php:317$indexint$versionintint|false public static function dialogNormalization($index, $version) { switch ($version) { case 7: return 0 - $index; case 6: return 0 - 16 - $index; } return false; }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.dts.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.