Spek helps to analyse your audio files by showing their spectrogram.

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New in v0.8.2

New Features:
• Various bugdixes
• Enhancements

New in v0.7

New Features:
• Added translations in 8 languages
• Preferences to select a language and to check for a new version
• Spectral density ruler
• Added a menu bar, cleaned up the tool bar.
• Better OS X integration

  Enhancements:

• Show the version number in the window
• Pre-compute the cosine table to speed up analysis by ±16%
• Use jhbuild and ige-mac-bundler to build and package Spek on OS X
• spek(1) man page
• Avoid using APIs depreciated in GTK3

  Bug Fixes:

• Fixed link activation on OS X (issue 31)
• Fixed new version detection on OS X
• Fixed duration for unsynchronised ID3v24 mp3 tags (upstream fix)
• Fixed rigth click → Quit (issue 24) and the ⌘ Q shortcut (issue 44)

New in v0.6

• Switch from GStreamer to FFmpeg libraries for audio decoding. This speeds up the overall analysis by a factor of 1.5 to 2.
• Decode audio and perform the analysis in separate threads. This makes the analysis 1.3~1.8 times faster on multi-core systems.