1.) What is the loudness is sones for 4000 Hz at 80 dB? (A) approx. 8 sones (B)

Question

1.) What is the loudness is sones for 4000 Hz at 80 dB? (A) approx. 8 sones (B) approx. 16 sones (C) approx. 32 sones (D) approx. 64 sones 2.) The part of ear, which helps in focusing of short-wave sound toward the eardrum, is called (A) Eustachian tube (B) cochlea (C) basilar membrana (D) pinna 3.) The ossicles are part of (A) outer ear (B) middle ear (C) inner ear 4.) About how much should you change the frequency of a sound to make it recognizably different if you start from 4000 Hz? (A) 1 Hz (B) 2 Hz (C) 4 Hz (D) 9 Hz 5.) What sound level in dB is required for a 1-sone loudness at frequency 50 Hz? (A) between 90 and 100 dB (B) between 80 and 90 dB (C) between 70 and 80 dB (D) between 60 and 70 dB

Explanation / Answer

1) c 2)b 3) c 4)a 6)b

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