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  2. Whistling - Wikipedia

    en.wikipedia.org/wiki/Whistling

    An offstage whistle audible to the audience in the middle of a performance might also be considered bad luck. Transcendental whistling ( chángxiào 長嘯) was an ancient Chinese Daoist technique of resounding breath yoga, and skillful whistlers supposedly could summon supernatural beings, wild animals, and weather phenomena.

  3. Whistled language - Wikipedia

    en.wikipedia.org/wiki/Whistled_language

    Whistled languages are linguistic systems that use whistling to emulate speech and facilitate communication between individuals. More than 80 languages have been found to practice various degrees of whistling, most of them in rugged topography or dense forests, where whistling expands the area of communication while movement to carry messages is challenging. [1]

  4. Humming - Wikipedia

    en.wikipedia.org/wiki/Humming

    A hum /hʌm/; Latin: murmur, The sound of giraffes humming is a sound made by producing a wordless tone with the mouth closed, forcing the sound to emerge from the nose. To hum is to produce such a sound, often with a melody. It is also associated with thoughtful absorption, 'hmm'.

  5. Sibilant - Wikipedia

    en.wikipedia.org/wiki/Sibilant

    The tongue can contact the upper side of the mouth with the very tip of the tongue (an apical articulation, e.g. [ʃ̺]); with the surface just behind the tip, called the blade of the tongue (a laminal articulation, e.g. [ʃ̻]); or with the underside of the tip (a subapical articulation).

  6. Turkish bird language - Wikipedia

    en.wikipedia.org/wiki/Turkish_bird_language

    The first is taught at Karabork Primary School which had 30 attendants when it first became a class. This class teaches students the techniques of kuş dili as well as the anatomy of the mouth and teeth needed to perform this language. Later, the students would finally learn to communicate with this language. [4]

  7. Speaking tube - Wikipedia

    en.wikipedia.org/wiki/Speaking_tube

    Later designs of the voicepipe inserted a removable cork-mounted whistle, which could be sounded by blowing into the tube from the other end. On naval vessels, this created a distinctive sound associated with urgent intra-ship communication. The sound of the whistle would summon the listener, who would remove the whistle and answer the call.

  8. Shepherd's whistle - Wikipedia

    en.wikipedia.org/wiki/Shepherd's_whistle

    [1] [2] Air travels over the tongue, through the top hole, past the top of the bottom hole, and out of the mouth between the lips. [11] The edge of the hole acts as a fipple. The lower hole opens onto an otherwise closed pocket of air, in the space between the whistle and the bottom of the mouth. This space acts as a sound box; the sound ...

  9. Physics of whistles - Wikipedia

    en.wikipedia.org/wiki/Physics_of_whistles

    A trailing edge tone occurs when an exterior flow passes over a trailing edge. There is a whistle that is a combination of an edge tone and a trailing-edge tone and might be called a wake-edge tone. It occurs in rotating circular saws under idling conditions and may be called the circular-saw whistle. Under load conditions, blade vibration ...