auCDtect Task Manager is a free GUI tool that lets you check if your lossless audio files were upconverted from a "lossy" file format.
Cost / License
- Free
- Proprietary
Alerts
- Discontinued
Platforms
- Windows

Spectrum is described as 'Modeled after the spectrum effect in Ableton Live , Spectrum is a free and open-source web app that shows frequencies of an MP3 or OGG file in real-time' and is an website. There are five alternatives to Spectrum, not only websites but also apps for Windows, Linux and Mac. The best Spectrum alternative is auCDtect Task Manager, which is free. Other great sites and apps similar to Spectrum are Spectro, Audiochecker, Tau Analyzer and sndpeek.
auCDtect Task Manager is a free GUI tool that lets you check if your lossless audio files were upconverted from a "lossy" file format.

Spectro is a freeware audio file analyzer for windows. Currently capable of reading FLAC, APE, MP3 and WAV files. Spectro lets you view vital data about compressed audio files and creates a spectrogram of the wave data.


Audiochecker is a tiny and portable tool which analyzes the source of WAV, LPAC, SHN, APE and FLAC audio formats, in order to verify if the encoding is lossless. If not, it means that the files in question are converted from other formats with lower quality, such as MP3.

Tau Analyzer is a free program, which can help you to distinguish with reasonable accuracy the original studio-based CDs from poor quality fakes, that have been "reconstructed" using a lossy audio source, such as MP3.
