Week 15a - Physics 1240 Tues 4/19/11 Last time:...

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Physics 1240 Tues 4/19/11 Last time : Architectural Acoustics Today : The human voice Next time : Singing voice, throat singing Learning Goal Recognize and understand what formants are Formant frequencies are crudely approximated as a pipe closed at one end Vowel sounds are determined by the ±rst two formants Key concept - formants
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Outline Anatomy of the vocal tract Source and resonant cavity Formants - vowel sounds only
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Vocal Tract
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Singing voice or vowel sounds Vocal folds (also called cords) -- sound source -- a buzzing sound produces a harmonic series Throat cavity (throat, mouth, nasal cavity) -- resonance cavity “shapes” frequency spectrum
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Vocal folds - periodic sound source
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Vocal folds look like brass player’s lips (glass mouthpiece)
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Vocal tract – pipe closed at one end (very approximate)
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Steady vowel sounds – produce sensation of distinct pitch – periodic waveform – harmonic series Formants – natural frequencies of the vocal tract Frequency of the formants determines the perceived vowel sound
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CQ 15.1 If the second formant has a frequency of 1200 Hz,
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This note was uploaded on 05/01/2011 for the course PHYS 1240 taught by Professor Holland,murray during the Spring '08 term at Colorado.

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Week 15a - Physics 1240 Tues 4/19/11 Last time:...

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