An introduction to computer audio
Is your Hi-res download true Hi-res or just a up-sampled CD?
Spectrum analysers will tell you if there is live above 20 kHz.
Sonic Visualiser is an application for viewing and analysing the contents of music audio files.
We hope Sonic Visualiser will be of particular interest to musicologists, archivists, signal-processing researchers and anyone else looking for a friendly way to take a look at what lies inside the audio file.
Sonic Visualiser is Free Software, distributed under the GNU General Public License (v2 or later) and available for Linux, OS/X, and Windows. It was developed at the Centre for Digital Music at Queen Mary, University of London.
Source: Centre for Digital Music, Queen Mary, University of London.