Name The Organ Which Helps us to speak? How Sounds are produced?

mouth. Sound is produced by something which vibrates

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Mouth. Sound is produced by something which vibrates
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Mouth helps in speaking. sound is produced when the air from our mouths comes out it vibrates and sound is produced
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  • Mouth helps us to speak.
  • Sound is produced by Voice Box, also known as Lyrinx.
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Speech organs produce the sounds of language. Organs used include the lips, teeth, tongue, alveolar ridge, hard palate, velum (soft palate), uvula and glottis.

Speech organs—or articulators—are of two types: passive articulators and active articulators. Passive articulators remain static during the articulation of sound.[1] Upper lips, teeth, alveolar ridge, hard palate, soft palate, uvula, and pharynx wall are passive articulators. Active articulators move relative to these passive articulators to produce various speech sounds, in different manners. The most important active articulator is the tongue as it is involved in the production of the majority of sounds. The lower lip is other active articulator. But glottis is not active articulator because it is only a space between vocal folds.

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MOUTH IS HELP SPEAK SOUND IS PRODUCED BY VIBRATES&ALSO KNOW AS 
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good krhk right answer. from wikipedia
 
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THE MAIN PARTS OF VOICE PRODUCTION:
  • • The Power Source: Your Lungs
  • • The Vibrator: Your Voice Box
  • • The Resonator: Your Throat, Nose, Mouth, and Sinuses

The Power Source: The power for your voice comes from air that you exhale. When we inhale, the diaphragm lowers and the rib cage expands, drawing air into the lungs. As we exhale, the process reverses and air exits the lungs, creating an airstream in the trachea. This airstream provides the energy for the vocal folds in the voice box to produce sound. The stronger the airstream, the stronger the voice. Give your voice good breath support to create a steady strong airstream that helps you make clear sounds.

The Vibrator: The larynx (or voice box) sits on top of the windpipe. It contains two vocal folds (also known as vocal cords) that open during breathing and close during swallowing and voice production. When we produce voice, the airstream passes between the two vocal folds that have come together. These folds are soft and are set into vibration by the passing airstream. They vibrate very fast – from 100 to 1000 times per second, depending on the pitch of the sound we make. Pitch is determined by the length and tension of the vocal folds, which are controlled by muscles in the larynx.

The Resonator: By themselves, the vocal folds produce a noise that sounds like simple buzzing, much like the mouthpiece on a trumpet. All of the structure above the folds, including the throat, nose, and mouth, are part of the resonator system. We can compare these structures to those of a horn or trumpet. The buzzing sound created by vocal fold vibration is changed by the shape of the resonator tract to produce our unique human sound.

When our voices are healthy, the three main parts work in harmony to provide effortless voice during speech and singing.

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mouth vocal chord
 
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