
About the sound of bells (sun):
Using the UC Berkeley church bells as the basic element of this sonification, we sonify the solar wind density from July 7, 2007. Solar wind density is the number of mostly hydrogen ions, which are protons, in a given volume (cubic centimeter in this case). Time is on the x-axis of this movie, spanning 24 hours. The y-axis is the solar wind density from 0.44 cm-3 to 6.86 cm-3. At low solar wind density, four bells play together. The higher the wind density, the more the four bells will play to the "beat of their own drum" (i.e. own tempi). The data is also sonified such that the lower the solar wind density is, the less dissonance and the higher the solar wind density is, the higher dissonance the sound is.