Spek (IPA: /spɛk/, ‘bacon’ in Dutch) helps to analyse your audio files by showing their spectrogram. Spek is free software available for Unix, Windows and macOS.
Supports all popular lossy and lossless audio file formats thanks to the FFmpeg libraries.
Ultra-fast signal processing, uses multiple threads to further speed up the analysis.
Shows the codec name and the audio signal parameters.
Allows to save the spectrogram as an image file.
Drag-and-drop support; associates with common audio file formats.
Auto-fitting time, frequency and spectral density rulers.
Adjustable spectral density range.
Translated into multiple languages.
Spek is free and open source software licensed under GPLv3. The project is written in C++, the code is available on GitHub.
Report bugs and request new features on the issue tracker.
Translation is done via Transifex. Don't hesitate to translate Spek into a new language or to improve existing translations.
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