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How do vocal cords produce sound?

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by

Abby Oehlerking

on 9 February 2016

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Transcript of How do vocal cords produce sound?

How Do Vocal Cords Produce Sound?
Vocal Cords
two folds of tissue
located in the larynx
vibrate when air passes over them producing the sound waves associated with talking and singing.

Vocal Folds
folds of membranous tissue
project inward from the sides of the larynx to form a slit across the glottis in the throat
the edges vibrate in the airstream to produce the voice.

Vocal Cord Production
While air passes through the elastic vocal folds, they vibrate against each other. This type of production is known as voicing. The vocal folds then produce sounds and give the singer a wide range of notes. "The Bernoulli Effect states that when the air flows in your words will flow out," states Mrs. Egger. Your vocal cords move very fast! When you sing the note A, your vocal folds move 440 hertz per SECOND!
Info from Mrs. Egger
What is normal boys vocal range? Girls?
In 7 th grade boys can usually sing from a F to F (cambiata 1 ) . In 8 th grade can get as low as a B flat( cambiata 2 or Baritone). Girls voice don't change as much. The hormones make your voices raspy and breathy. You start to have a break in notes.



Do Men and Women's vocal cords sound differ?
Males have larger vocal tracks, which means that they can sing lower. They mainly sing from a bass, baritone, tenor, or countertenor. ( a range of E2 - F6)
Ladies then have small vocal tracks making it easier to sing higher. They sing from the parts of alto, contralto, mezzo-soprano, and soprano. (a range of F3- C6)
Demonstration
*When I rub these two rubber bands together it shows the motion of your vocal folds when you sing or talk.
Size Demonstration
*The part of the vocal fold that vibrates is about 60% longer in males
*purple=male
*orange=female
How your age changes your voice

SITES AND SOURCES
* http://www.angelfire.com/folk/therapy/vocal.html


* http://www.uiowa.edu/voice-academy/dr-voice-science-explains
Your age will undoubtedly bring changes to your voice. Your voice will change with your age. Speaking will become harder as you age. Your voice range will vary and your respiratory system will work less efficiently.
Thin=High
Thick=Low
Info from Mrs. Egger
What kind of injuries can your vocal cords go through?
You can have a overuse injury. You may also have a blister on you vocal folds known as vocal nodes or poll up.

What do you think is most important for boys and girls to know about singing?
Mrs. Egger says that you should keep singing to improve!
Full transcript