abracadabra
发表于 2025-3-26 23:35:45
Ultrasound and Infrasoundst obvious characteristic of these sound types is that, by definition, they are “extreme” frequencies that fall outside the normal response curve for the human ear (see Figure 1) and are therefore inaudible. Ultrasound, which includes biologically significant sounds ranging from 15 kHz or so up to 2
manifestation
发表于 2025-3-27 04:36:13
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Kaleidoscope
发表于 2025-3-27 06:15:45
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malign
发表于 2025-3-27 11:51:13
Sound Playback Studieshington, D.C., had begun recording animal vocalizations. As part of his effort to decipher “the speech of monkeys”, Garner conducted some of the first sound playback experiments. He reasoned that by replaying the vocalizations to animals and watching their reactions, he could learn the functions of
ASSET
发表于 2025-3-27 14:47:19
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红润
发表于 2025-3-27 20:32:04
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Blanch
发表于 2025-3-28 01:07:42
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muscle-fibers
发表于 2025-3-28 04:52:53
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ENACT
发表于 2025-3-28 06:56:45
Earthquakes, Tsunamis and Nuclear Risks several advances worth noting in this context, such as the use of miniature thermistors to monitor airflow and record acoustic signals in a bird’s vocal organ during song (e.g., Suthers 1990), or the use of quantitative kinematic analysis to analyze motions of the vocal tract (e.g., Westneat et al. 1993).
空气
发表于 2025-3-28 10:38:50
Sound Production in Birds: Acoustics and Physiology Revisited several advances worth noting in this context, such as the use of miniature thermistors to monitor airflow and record acoustic signals in a bird’s vocal organ during song (e.g., Suthers 1990), or the use of quantitative kinematic analysis to analyze motions of the vocal tract (e.g., Westneat et al. 1993).