  Flautas de chinos - prehispanic chilean flutes played during ritual
celebrations in central Chile - are known to produce very particular beating
sounds, the so-called sonido rajado. Some previous works have focused on the
spectral analysis of these sounds, and on the input impedance of the complex
resonator. However, the beating sounds origin remains to be investigated.
Throughout this paper, a comparison is provided between the characteristics of
both the sound produced by flautas de chinos and a synthesis sound obtained
through time-domain simulation of the jet-drive model for flute-like
instruments. Jet-drive model appears to be able to produce quasiperiodic sounds
similar to sonido rajado. Finally, the analysis of the system dynamics through
numerical continuation methods allows to explore the production mechanism of
these quasiperiodic regimes.
