Deck 21: Musical Sounds

Question 1

The pitch of a musical sound depends on the sound wave's

A)wavelength.
B)frequency.
C)speed.
D)amplitude.
E)all of these

Answer 1

frequency.

Question 2

The quality of a musical note has to do with its

A)loudness.
B)frequency.
C)harmonics.
D)amplitude.
E)All of the above choices are correct.

Answer 2

harmonics.

Question 3

Fourier discovered that periodic waves can be represented by

A)a series of non-periodic waves.
B)the summation of a series of simple sine waves.
C)a binary code.
D)pulses of the same amplitude.

Answer 3

the summation of a series of simple sine waves.

Question 4

About how many octaves are present between 20 hertz and 2560 hertz?

A)5
B)6
C)7
D)8
E)9

Question 5

What is the threshold of hearing?

A)10 decibel
B)1 decibel
C)0)1 decibel
D)0)01 decibel
E)None of the above choices are correct.

Question 6

About how many octaves are present between 100 hertz and 1600 hertz?

A)4
B)5
C)6
D)7
E)8

Question 7

As we grow older,we have the greatest difficulty hearing frequencies that are

A)low.
B)mid-range.
C)high.

Question 8

The loudness of a sound is most closely related to its

A)speed.
B)frequency.
C)wavelength.
D)intensity.

Question 9

Compared to a sound of 30 decibels,a sound of 60 decibels is

A)twice as intense.
B)10 times as intense.
C)100 times as intense.
D)1000 times as intense.
E)10,000 times as intense.

Question 10

Reverberation is a phenomenon you would be most likely to hear if you sing in

A)the shower.
B)a small drape-covered room.
C)a large drape-covered room.
D)the desert.

Question 11

Compared to a sound of 40 decibels,a sound of 50 decibels is

A)10 times as intense.
B)100 times as intense.
C)1000 times as intense.
D)10,000 times as intense.
E)more than 10,000 times as intense.

Question 12

A decibel is a measure of a sound's

A)frequency.
B)wavelength.
C)speed.
D)loudness.
E)all of these

Question 13

As we become older,the frequency range of human hearing

A)decreases.
B)increases.
C)remains relatively constant.

Question 14

All other things being the same,strings having more mass than other strings will produce

A)higher frequency notes.
B)lower frequency notes.
C)the same frequency notes.

Question 15

The frequency of a note one octave higher in pitch than a 440-Hz note is

A)1760 Hz.
B)880 Hz.
C)440 Hz.
D)220 Hz.
E)110 Hz.

Question 16

The fundamental frequency of a violin string is 440 hertz.The frequency of its second harmonic is

A)220 hertz.
B)440 hertz.
C)880 hertz.
D)None of the above choices are correct.

Question 17

High pitched sound has a high

A)speed.
B)frequency.
C)number of partial tones.
D)All of the above choices are correct.
E)None of the above choices are correct.

Question 18

The loudness of a musical sound is a measure of the sound wave's

A)wavelength.
B)frequency.
C)speed.
D)amplitude.
E)all of these