(a) Which of the frequencies in the sound wave spectrum is the fundamental frequ

Question

(a) Which of the frequencies in the sound wave spectrum is the fundamental frequency?  ---Select--- E F G H I J
(b) Which of the time intervals in the sound pressure vs. time graph corresponds to this fundamental frequency?  ---Select--- A B C D
(c) Which of the frequencies in the sound wave spectrum is the third harmonic?  ---Select--- E F G H I J
(d) Which of the time intervals in the sound pressure vs. time graph most closely corresponds to the third harmonic frequency? Select---A B C D

Vocalization data were collected for a human making the sound of soooo as in go. The data from a microphone sensor sound pressure vs. time) are shown below. 3.0 2 2.5 0.00 0.02 0.04 0.06 Time (s) The corresponding sound wave (frequency) spectrum is also shown. 1000 2000 Frequency (Hz)

Explanation / Answer

(a) The lowest resonant frequency of a vibrating object is called its fundamental frequency. Answer is I.

(b) Answer is A. (using the equation f = 1/t)

(3) Answer is G.

The frequencies of the harmonics can be found utilizing the formula

fn = n × f1

(4) Answer is C.

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