Large local excitations can cancel globally because their phases oppose

Evidence

The vector diagram of the wavelets and the sum vector are shown in Fig. 14.11. The sum vector of the many wavelets leads to a point very close to the starting point, i.e. the wavelets produced along the sections of the model cancel each other out almost completely; the large-amplitude wavelets originating from sections 13.6 to 13.8 show a phase angle almost opposite from those above 14.5 Bark, each of which has a much smaller magnitude. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1612

Categorization

• QUESTION: Worth chasing: how does this phase-cancellation depend on exact stimulus f2/f1 ratio and level? Consequence for predicting audible levels of combination tones.