Lossless Audio Checker

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Lossless Audio Checker is a utility to check whether a FLAC or WAVE file is truly lossless or not, by detecting cutoff frequencies. It can show you the full frequency range for each file.

Nowadays, the process of audio mastering sometimes upconverts, upsamples and upscales songs, resulting in CDs and so-called "lossless" tracks that are in fact, incomplete. Lossless Audio Checker helps you identify these tracks.

Our goal is to raise awareness on these bad practices from the music industry and pressure them to deliver true lossless music. Help us by testing your music and reporting your results — it's free!


Lossless Audio Checker 1.9.1 is outdated. We have presented a paper on October 30th, 2015 at the 139th AES Convention for Lossless Audio Checker 2.0. It contains Upscaling, Upsampling and Transcoding detections. The paper is available here.

Download Lossless Audio Checker
Windows XP SP3 (with .NET Framework 2.0)/Vista/7/8 · Version 1.9.1

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Version 1.9.1

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