CAOHC Audiometric Booth and Equipment Calibration 2

Question 1

What is 'bioacoustic simulation' and how is it used in audiometric equipment quality control?

Accepted Answer

An electronic device that simulates human hearing responses to verify audiometric system accuracy

Answer

A medical procedure to test cochlear function

Answer

A hearing aid fitting technique

Answer

A method of testing audiometric booth construction materials

Question 2

What maintenance should be performed on audiometric booth door seals?

Accepted Answer

Regular inspection for wear, compression set, or damage with replacement as needed to maintain acoustic integrity

Answer

No maintenance is needed once installed

Answer

Apply lubricant monthly to keep seals flexible

Answer

Replace all seals every week regardless of condition

Question 3

What is the significance of the '14-hour noise-free period' requirement before a baseline audiogram and how does it relate to booth considerations?

Accepted Answer

It allows temporary threshold shifts to recover; the booth ensures testing conditions are quiet enough for valid measurement

Answer

It is the time needed for the booth to cool down

Answer

It refers to the audiometer warm-up time

Answer

It means the booth must be unused for 14 hours before each test

Question 4

How does the use of automatic audiometers affect calibration requirements?

Accepted Answer

Automatic audiometers require the same calibration standards as manual audiometers plus verification of the automated presentation algorithm

Answer

Automatic audiometers are self-calibrating and need no external calibration

Answer

They only need calibration once during manufacture

Answer

Calibration requirements are less stringent for automatic audiometers

Question 5

What is the consequence of using audiometric earphone cushions that have become hardened over time?

Accepted Answer

Hardened cushions do not conform properly to the ear, creating air leaks that affect low-frequency thresholds

Answer

Hardened cushions provide better acoustic coupling

Answer

Cushion hardness does not affect test results

Answer

Hardened cushions only affect high-frequency measurements

Question 6

What information does the audiometer calibration certificate typically include?

Accepted Answer

Measured output levels, frequency accuracy, linearity data, distortion levels, and compliance with ANSI S3.6

Answer

Only the date of calibration and the technician's signature

Answer

The purchase price of the audiometer

Answer

The booth's noise reduction specification