Sounds being classified can be of use both to the makers and listeners of electroacoustic music. Such attempts, of which there have been too few until this point, were created to assist in compositional approaches as well as the analytical experience/reception. Examples include Schaefferian theory, Wolfgang Thies’ "Typologie der Klšnge" which used adjectival sonic descriptors (W. Thies-Grundlagen einer Typologie der Klšnge, Hamburg: Verlag der Musikalienhandlung Karl Dieter Wagner, 1982) and more formal typologies based on physical sound characteristics or types of sound objects.
See also:Auditory Scene Analysis, Soundscape Studies, Spectromorphology, Typo-morphologie (Typo-morphology)
Bibliography: CLARO, Samuel (1965). Panorama de la mķsica experimental en Chile