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Whistling




Whistling is the production of Sound by means of a constant breath of air from the mouth. The air is moderated by the Tongue , Lips , Teeth , or Finger s to create Turbulence , and the mouth acts as a Resonant chamber to enhance the resulting sound, thus acting as a type of Helmholtz Resonator . Whistling can also be produced by Hands , or using an instrument (see Whistle ), some as simple as a blade of Grass .

Non-instrumental whistling from the mouth can be accomplished in several ways:

  • ''Pucker whistling'', in which the air is expelled through pursed lips, producing turbulence

  • ''Roof'' or ''palatal whistling'', in which the turbulence is produced by air being pushed between the tongue and the roof ( Palate or Alveolar Ridge ) of the mouth

  • ''Finger whistling'' or '' Wolf-whistling '', in which one or more fingers are inserted into the mouth to shape the opening, allowing a much more forceful stream of air to be blown through. A variation entails pinching at the center of the bottom lip, and sucking ''in'', rather than blowing out, resulting in a very loud and piercing whistle.

  • ''Hand whistling'', in which air is blown from the mouth into a resonant chamber formed by cupped hands

  • ''Throat whistling'', in which air is blown through the throat with the mouth closed


A whistled tone is a simple Oscillation (or Sine Wave ) produced in the resonant chamber, and thus Timbral variations are impossible. The Pitch of a whistle can be altered by changing the volume and shape of the resonant chamber (most typically by using the tongue).

It is also possible to whistle and hum at the same time. An easy way of doing this is to shape the throat and lips as if one was going to whistle and softly sing "oooowwww". As you are doing this, slowly start to focus the air towards the front of your mouth and tighten your lips so that you are whistling. With enough practice, it is possible for one to hum and whistle two separate melodies at the same time.

Some languages and code languages use whistles as a part of their communication; this is referred to as Whistled Speech .

In Russian culture whistling is considered bad luck.


MUSICAL WHISTLING


Whistling can be and Vaudeville circuits were professional whistlers, and several notable Song s feature whistling in some capacity:


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