Week 15b - Physics 1240 Thurs 4/21/11 Today: Singing voice,...

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Physics 1240 Thurs 4/21/11 Today : Singing voice, throat singing Next time : Musical illusions Outline • Review and understand formants • Calculate the frequency of formants using “a pipe closed at one end approximation” • Identifying vowel sound knowing the frequency of the Frst two formants • Science of throat singing
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Last time 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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Natural modes for a pipe closed at one end f n = nv/(4L) n=1,3,5, … v = 344 m/s
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Vocal tract – pipe closed at one end (very approximate)
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Filter - attenuates certain frequencies attenuate = reduce intensity of
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intensity = source x flter
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the 2 nd and 3 rd formants for a vocal tract 0.1 m long? A) 2580, 4300
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Week 15b - Physics 1240 Thurs 4/21/11 Today: Singing voice,...

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