occult
发表于 2025-3-23 13:06:29
Whistling in the Animal Kingdom,d vertebrates. Among the latter, in particular birds and a few mammals, some species emit characteristic whistling signals. This may be one reason why the Turkish village of Kusköy, where whistled communication is practiced,has been so named; it will be recalled that Kusköy means “place of the birds”.
和平主义者
发表于 2025-3-23 16:21:43
The Mechanism of Whistle Production, whistling techniques are different in this respect; they work only on expiration. A glance at the accompanying sketches will show the close similarity between the geometry of the bird call in use and that of the mouth emitting a bilabial whistle (Figs.24,25,26,27).
LAIR
发表于 2025-3-23 19:37:27
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远足
发表于 2025-3-24 00:46:44
Introduction and Historical Sketch,d duration, thereby converting the speech signals as we generally know them into a kind of tune that can be whistled and used either as a secret language or as means of communication, with a range greatly in excess of that of the human voice, however stentorian.
Calibrate
发表于 2025-3-24 02:47:45
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治愈
发表于 2025-3-24 08:32:53
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雀斑
发表于 2025-3-24 12:04:10
Book 1976y and (in some cases less so) from the point of view of articulation, because the glottal tone of every day communication, the "voice", is repl aced by a whistl e which carries the in formation. The advantage of this procedure, from the point of view of the user, is a vastly increased range as wel
逢迎春日
发表于 2025-3-24 17:45:01
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令人苦恼
发表于 2025-3-24 22:30:07
Communication and Cyberneticshttp://image.papertrans.cn/w/image/1027958.jpg
VEST
发表于 2025-3-25 01:11:52
https://doi.org/10.1007/978-3-642-46335-8Pfeifsprache; distribution; phonetics; phonology; physics; system