CSDS 103 Exam #! Practice test - part 4
Sound Waves and Frequencies Quiz
Test your knowledge of sound waves, harmonics, and intensity levels with our comprehensive quiz! This quiz is designed for students studying acoustics and sound engineering, providing a challenging yet engaging experience.
- 10 multiple-choice questions
- Focus on music theory, physics of sound, and practical applications
- Instant feedback for all questions
Suppose the fundamental frequency of a complex periodic wave is 400 Hz. What would be the frequency of the second harmonic?
600Hz
800Hz
1000 Hz
1200 Hz
Suppose the fundamental frequency of a complex periodic wave is 400 Hz. What would be the frequency of the third harmonic?
800Hz
1000Hz
1200Hz
1500Hz
Suppose the fundamental frequency of a complex periodic wave is 400 Hz. What would be the frequency of the fourth harmonic?
800Hz
1500Hz
1600 Hz
4000 Hz
Suppose the fundamental frequency of a complex periodic wave is 400 Hz. What would be the frequency of the fifth harmonic?
1000Hz
2000Hz
3000Hz
4000Hz
The inverse square law states that as the distance from a sound doubles the intensity decreases by 8dB
True
False
The intensity of a teacher’s voice is 75dB at a distance of three feet away from the child. If the child is moved to be six feet away from the teacher, what is the intensity level of the teacher's voice?
57dB
63dB
69dB
71dB
The intensity of a teacher’s voice is 75dB at a distance of three feet away from the child. If the child is moved to be twelve feet away from the teacher, what is the intensity level of the teacher's voice?
57dB
63dB
69dB
71dB
The intensity of a teacher’s voice is 75dB at a distance of three feet away from the child. If the child is moved to be twenty four feet away from the teacher, what is the intensity level of the teacher's voice?
57dB
63dB
69dB
71dB
The difference in decibels between a signal and a noise present at the same time is the ____________
Relative frequency
Sound Pressure Level
Intensity Level
Signal to noise ratio
A teacher is speaking at a volume of 50dB and at the same time a fan is blowing in the classroom at 30dB. What is the signal to noise ratio?
+20dB
-20dB
-80dB
+80dB
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