Salix Forums

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

Homepage: http://spek.cc/
Source: https://spek.googlecode.com/files/spek-0.8.2.tar.xz
Screenshot:

Audacity has a similar feature (among many others).

Another option is to just use sox (you probably have this installed anyway).

sox yourfile.flac -n spectrogram -o spectrum.png

Thanks, I wasn't aware that sox does spectrograms!

Note to self - to prepare spectrograms for all the files (*.flac) in the directory do:

for i in *.flac; do sox "$i" -n spectrogram -o "${i%%.flac}.png"; done

Spek (Acoustic Spectrum Analyser)