Abstract
This paper examines two prehispanic double whistles, probably of Inca culture, both of which are constructed to emit sounds which undulate, in other words, with pulsations or beats. Each whistle consists of two tubes of slightly uneven lengths which, when blown simultaneously, emit sounds that are also slightly different in pitch, and when combined provoke periodic fluctuations in amplitude. These ancestral sounds closely resemble the pulsating sound quality of certain contemporary rural wind ensembles of the Bolivian Andes, such as the multiphonic and vibrant timbre of pinkillu flutes and of certain types of panpipes. The «complex tubes» of the contemporary Chilean pifilka and of other types of pre-Columbian panpipes also reveal continuity in aesthetic and in the technology to create it, from prehispanic times to the present.
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