Abstract
A whistled speech signal is subject to attenuation and modification during propagation between the whistler and the listener. In general, whistlers have a profound knowledge of the impact of not only the terrain, the vegetation and noise but also local meteorological and topographical conditions on the intelligibility of both voices and whistles.
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- 1.
Hanning sine-square window (length of 0.025 s, time step at 0.002 s, frequency step at 20 Hz), dynamic range at 75 dB, maximum of 100 dB/Hz, pre-emphasis of 5 dB/oct, maximum frequency at 4 kHz.
- 2.
The equipment was adapted to speech transmission: loudspeaker TVM Medium ARM 190–00/8 adapted to faithfully render the voice spectrum (with high response levels between 0.1 and 10 kHz).
- 3.
This approach was employed to control the pronunciation variability inherent to the repetition of the same sentence by the same speaker.
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Meyer, J. (2015). Acoustic Adaptation to Natural Environments. In: Whistled Languages. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-45837-2_6
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DOI: https://doi.org/10.1007/978-3-662-45837-2_6
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