BLIND LISTENING TEST
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Match LUFS
Blind/Shuffle
Shuffle
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All tracks will be saved as WAV files named by their current letter (A, B, C, etc.).

The original names are stored in the WAV file.
You can use Reveal Exported Files to see them.
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Reveal Exported Files

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Our brains often trick us into hearing what we expect to hear.1

Louder often sounds better, even when it isn't.2

These are known and common problems, for which blind, level-matched listening tests were designed.

Blind Listening Test is a free web-based and VST3/AU plugin that automatically matches the perceived loudness of multiple audio files and lets you hide the names and randomize the order while you compare them.

Unlike a signal's peak level measured in dBFS (Decibels relative to Full Scale), LUFS (Loudness Units relative to Full Scale) approximates what we hear by weighting frequencies the way the ear does, averaged over time.

Blind Listening Test uses the ITU-R BS.17703 standard to measure the loudness of each file, which ignores silence and very quiet sections. Once the loudness is matched to the quietest file, it sets the overall level so the loudest peak across all files is no higher than −1 dBFS.

Use the web-based version or download the plugin. Add files, click Match LUFS, and then hide the names with Blind/Shuffle.

You can learn more about each button by hovering over it, and turn off this feature in the main menu at any time.

1. Toole & Olive, Hearing is Believing vs. Believing is Hearing, Audio Engineering Society, 1994.   2. Fletcher & Munson equal-loudness contours, 1933 (ISO 226).   3. Recommendation ITU-R BS.1770, ITU.