Representing the source code and compiled program graphical visualizer audio spectrum. The sound is analyzed through a standard recording device Windows, ie You can select the microphone and view range with it, or you can select stereo mixer and view the range of reproduced sound. In this visualizer is possible to adjust the number of displayed octaves, adjustable transparency background amplification. You can also download a palette of external PNG file format 32ARGB, damping effects "blur" and "burning". This view allows the visualizer spectrum in two modes as arcs (rings) and form sectors. In the first form of the radial coordinate is responsible for the frequency octave, corner - between octaves. Harmonics are separated from each other by an octave, are on the same line, color - intensity. In the second mode, the radial coordinate - the volume, color - frequency, angular coordinate - frequency (period - 1 octave). This idea was suggested to me Vladislav Petrovky (aka Hacker), only his idea a little differently had displayed spectrum as a curve, I have done in the form of sectors.
Link (on Russian).
Link (on Russian).