MarPanning

MarPanning is a 3D application that allows you to see the left/right panning for different frequency bins of an audio file. It's written in C++ using the Marsyas audio framework, Qt and OpenGL. The y-axis (up and down) shows the different frequency bins, with low frequencies at the bottom and high frequencies at the top. The x-axis (left to right) shows the Stereo Panning Index, as calculated by Marsyas for each frequency bin. The z-axis shows time. The dots are coloured green and are small if there is just low energy in that bin, and grow in size and get more yellow the more energy there is in that bin.

The song that is playing is "In My Life" by the Beatles and produced by George Martin. The song starts with the guitar panned hard left, and you can see the different frequencies for the notes appearing from bottom to top. If you look closely, you can even see the melody about halfway up the screen. You can see and hear the vocals come in on the right later in the song.

MarPanning is completely open source and under the GPL licence. You can play with it yourself by downloading and installing Marsyas.

Category:

Education

Tags:

• Stereo Panning
• The Beatles
• George Martin
• sness
• tzanetakis
• Marsyas