Audirvana is using a very useful feature: Audio Scan
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This exclusive feature scans the audio content of the track being played. It reveals its actual resolution and checks if it matches the audio quality featured in the file metadata.
It analyses the frequency response, detects low-res and compressed elements, up-sampling and other processing artifacts.
This is a powerful update of the HD Analyzer previously available in Audirvāna and developed in partnership with Ircam Amplify.