Spek helps to analyse your audio files by showing their spectrogram. Features * 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 19 languages.