Today, two types of equipment are used to test hearing – the manual and microprocessor audiometer. Contact us for quotes and advice on which type to purchase. . The following are advantages and disadvantages to each type:

  • Manual Audiometer
    • Relatively less expensive.
    • Subject to examiner error. Therefore, all federal noise regulations require the examiner to be trained and CAOHC certified to administer required hearing tests utilizing the Modified Hughson-Westlake technique.
    • If not CAOHC certified, the examiner must have demonstrated proficiency and be directly supervised during the hearing test by a physician or audiologist who is in close proximity during the hearing test.
    • Recordkeeping or other tasks cannot be accomplished while the patient is being tested. The examiner can only test one patient at a time.
    • This is the best audiometer to use for hard-to-test patients. The examiner maintains greater examiner control of the testing process.
  • Microprocessor Audiometer
    • Microprocessor audiometers are relatively more expensive.
    • Optional equipment may include a computer interface-port to allow interface to another computer and built-in calibrating features.
    • Microprocessors can be utilized as a manual audiometer. Technician should be trained and CAOHC certified in order to be able to administer a manual hearing test utilizing the Modified Hughson-Westlake technique.
    • Leaves the operator free to do recordkeeping or other tasks during the test.
    • Even with the use of a microprocessor or direct supervision by a physician or audiologist, the MSHA and FRA noise regulations require the examiner to be CAOHC certified.
    • Microprocessor audiometers should be “backed-up” periodically.
    • With microprocessor audiometers the process may be too difficult for some patients; therefore, some patients may still need testing administered manually.
    • Can test several patients simultaneously as in a mobile van.