Hearing Instrument Specialist Exam Questions and Answers 100% Pass

Hearing Instrument Specialist Exam
Questions and Answers 100% Pass


Pure tone -

CORRECT ANSWER: Single frequency




QUESTION: Complex tone -

CORRECT ANSWER: Multiple frequencies




QUESTION: Sound -

CORRECT ANSWER: Result of motion of a vibrating source




QUESTION: How does sound travel? -

CORRECT ANSWER: On waves that are created by vibrations

,QUESTION: Wave -

CORRECT ANSWER: A force or disturbance that travels through a

medium such as liquid, solid, or air, transporting energy from one

molecule to the next




QUESTION: What are sound pressure waves are comprised of? -

CORRECT ANSWER: Areas of compression (greater pressure) and

rarefraction (less pressure)




QUESTION: Compression -

CORRECT ANSWER: Occurs when molecules move closer together




QUESTION: Rarefraction -

CORRECT ANSWER: Occurs when molecules spread apart




QUESTION: What are sound pressure waves collected by? -

,CORRECT ANSWER: The outer ear, channelled to the eardrum which

causes it to vibrate with the alternating pressure




QUESTION: Another word for compression -

CORRECT ANSWER: Condensation




QUESTION: Sine wave -

CORRECT ANSWER: Represents pressure as a function of time; 1

cycle per second or 1 Hertz (Hz)




QUESTION: Psychoacoustics -

CORRECT ANSWER: Perception of sound




QUESTION: Intensity -

CORRECT ANSWER: Loudness; measured in dB SPL or HL; physical

measurement that expresses signal amplitude

, QUESTION: Frequency -

CORRECT ANSWER: Pitch; physical measurement of cycles per

second (Hz)




QUESTION: Normal human ear responds to what frequency range? -

CORRECT ANSWER: 20 to 20,000 Hz




QUESTION: Frequencies that the human ear are most sensitive to? -

CORRECT ANSWER: Between 3000 and 4000 Hz




QUESTION: Audiometer -

CORRECT ANSWER: Instrument that measures frequency and

intensity ranges; results displayed on an audiogram




QUESTION: What is the function of critical bands? -