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The whistled language replaces each vowel or consonant with a whistling sound: two distinct whistles replace the five Spanish vowels, and there are four whistles for consonants.
UNESCO: Culture
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Sleeping in the headphones on an airplane is a challenge, though they produce odd noises, including a whistling sound, when I leaned my head against certain surfaces, and sleeping on my side was out of the question.
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Simultaneously touching the mouthpiece of the pipe with one's front teeth and applying one's throat produces a unique timbre comprising a clear and gentle whistling sound and a drone.
UNESCO: Culture
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Clean, silent, (well, OK, a high-pitched whistling sound), uses no fuel whatsoever, except hydrogen, the most plentiful element on the planet, and emits only water vapor.
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He puts his left arm around my seat, and starts whistling, a soft pulsing sound that calms the heart and flows into the chaos outside.
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