Pack: Histogram Mapping Synthesis

Histogram Mapping Synthesis (HMS) is a spectral technique based on Cellular Automata (CA). CA are mathematical/computational models that create moving images. In the context of HMS, these images are analysed by histogram measurements, giving as a result a sequence of histograms. In a nutshell, these histogram sequences are converted into spectrograms which in turn are rendered into sounds. Unlike other CA-based systems, the HMS mapping process is not intuition-based or totally arbitrary; it is based on resemblances discovered between the histogram sequence components and sound spectral components. Additional DSP methods were developed to control the CA and the synthesis so as to be able to design and produce sounds in a predictable and controllable manner.