AAO-HNSF Certificate Program for Otolaryngology Personnel

Basic Physics of Sound and Hearing (Questions: 29-38)

29. Which of the following is/are necessary to the production of sound?

a. A vibrating body b. An elastic medium c. Propagation d. All of the above

30. If a paper machine is producing 90dBspl, and a second machine next to it and produces 90dBspl, the resulting sound will be:

a. 90dBspl b. 93dBspl c. 96dBspl d. 99dBspl

31. The threshold of pain at the ear is reached at:

a. 60 dBspl b. 20,000 mPa c. 40,000 mPa d. 140 dBspl

32. The effect of traveling sound waves on particles in the elastic medium is:

a. They disperse particles in a circular distribution b. The increase the speed of particle transmission c. They decrease the speed of particle transmission d. They result in areas of compression and areas of rarefaction of air pressure

33. 0 dB HL = no sound.

a. True b. False

34. The "pitch" of a sound is related to frequency and the "loudness" is related to amplitude.

a. True b. False

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