Loudness Colormap

You can calculate and display the loudness colormap of a sound. Loudness is calculated according to Zwicker’s model (ISO532-1).

The loudness colormap is a graph that describes the signal according to time, frequency, and loudness level. Time is displayed as the abscissa. Frequency is displayed as the ordinate. The loudness level is displayed using a Colormap. The calculation of this loudness colormap is done according to the standard ISO532-1.