Acoustic and Aerodynamic Features of Hadza Clicks
Abstract
Hadza has 4 clicks in its sound inventory: bilabial,
dental, alveolar and lateral [ʘ, |, !, ‖] that can be
aspirated, glottal and nasal [ʘ̰ , |ʔ, |h, ɴ|, ɴ|ʔ, !ʔ, !h, ɴ!, ɴ!ʔ,
‖, ‖h, ɴ‖h, ɴ‖ʔ]. The bilabial click [ʘ] has a noisy release
and is defined as [grave & noisy]. Acoustically the
oral clicks [|, !, ‖] are described with 2 features [grave
vs. acute] and [abrupt vs. noisy]. The [grave] feature
defining the alveolar click [!] has a peak in the FFT
spectrum around 2 kHz. The [acute] feature defining
the dental and lateral clicks [|, ‖] has a peak around 6
kHz for the dental and an emphasis in frequencies
between 4 & 5 kHz for the lateral click (all peaks in
rounded values). The difference between the [abrupt]
[!, ‖] also has a duration component, i.e. short burst vs
short noise band.
Origin | Files produced by the author(s) |
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