Pulse-resonance sounds are the sounds that animals use to communicate at a distance, to declare their territories, and to attract mates (Fitch and Reby 2001). They form the basis of most of the calls produced by vertebrates (fish, frogs, birds, and mammals). The tones of orchestral instruments are pulse-resonance sounds (Fletcher and Rossing 1998) and the internal combustion engine produces a form of pulse-resonance sound. Pulse-resonance sounds are ubiquitous in the world around us and they are the interesting sounds of everyday life (Patterson et al. 2008). They are acoustically distinct from the inanimate sounds produced by turbulent air and water (wind and rain).
KeywordsCombustion Covariance Autocorrelation Verse
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