spek

Spek helps to analyse your audio files by showing their spectrogram.
It supports all popular lossy and lossless audio file formats.
Features:

Ultra-fast signal processing, uses multiple threads to further
speed up the analysis
Shows the codec name and the audio signal parameters
Can 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


          

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License: GPL-3.0-only
URL: http://spek.cc/