Formants and Vowel Sounds

Formants and Vowel Sounds: Question 1) For ?rst and second formants at 600 and 2000 Hz, what vowel would be understood?Effect of Helium in the Vocal Tract: Question 2) Suppose you sing with your vocaltract ?lled with helium, in which the speed of sound is approximately 930 m/s.a) Does this change the frequency of vocal cord vibration?b) Does it change the formant frequencies?c) By how much?

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