Topic 7, Question 15: Which of the waveforms shown in Figure 1a is the first har

Question

Topic 7, Question 15:

Which of the waveforms shown in Figure 1a is the first harmonic?

A. The dotted curve

B. The dashed curve

C. The solid curve

D. All of the above. Either one can be considered the first harmonic.

E. There is not enough information to tell.

Topic 7, Question 16:

Which of the waveforms shown in Figure 1a-1c has the shortest period?

A. The waveform in Figure 1c

B. Second harmonic

C. The waveform in Figure 1b

D. First harmonic

E. Third harmonic

PASSAGE: Use the following information for the remaining multiple-choice questions: The timbre, or quality, of a musical tone depends on the number of harmonics and the amplitude of each harmonic present. This includes the fundamental freq uency of the note played Eure la illustrates the first three armonics of tone. The addition of the first two armonics is shown n Figure 1b and the addition of the first three is shown n FIEure Time Figure 1a o 201e. Grand Canyon University. All Rights Reserved. GRAND CANYON UNIVERSITY Time Figure 1b Figure 1c The sin Figure 2 illustrate the characteristi of a tone on a trombone. The first Eraph graph shows the pressure variations and the second shows the relative mplitudes of the harmonics in the note. Harmonic Figure 2

Explanation / Answer

(15) the first harmonic is the one which has minimum frequency.so the solid curve is the first harmonic..so opton c is correct.

(16) waveform with the shortest period is the one which has the highest fequency. of all the given waveforms,the third harmonic(dotted lines) has the highest frequency.so third harmonic has the shortest period.so option e is correct.

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