Practice Test GeeksIHS - International Hearing Society Practice Test
← All IHS Flashcard Decks

Instrument Fitting Flashcards

7 cards from real IHS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Instrument Fitting flashcards as text

  1. The input/output curve of a hearing aid with wide dynamic range compression (WDRC) shows gain decreasing as input level rises. This means the compression ratio:

    Answer: Is greater than 1:1

    A compression ratio greater than 1:1 means output increases less than input, providing more gain for soft sounds and less for loud sounds.

  2. Which of the following best describes the attack time of a hearing aid compressor?

    Answer: Time for gain to decrease after a loud sound onset

    Attack time is how quickly the hearing aid reduces gain in response to a sudden loud input signal.

  3. A patient with a flat 50 dB HL hearing loss consistently rejects hearing aids because loud sounds are uncomfortable. The fitting adjustment MOST likely needed is:

    Answer: Lower the MPO/OSPL90 setting

    Reducing the maximum power output (MPO) prevents the hearing aid from reaching uncomfortable loudness levels for the patient.

  4. In the context of hearing aid programming, 'acclimatization' refers to:

    Answer: Gradually increasing gain over time to help new users adapt

    Acclimatization features start with reduced gain and automatically or manually increase it as the user adjusts to amplification.

  5. When using a Knowles Electronic Manikin for Acoustic Research (KEMAR), the hearing aid fitting professional can:

    Answer: Simulate real-ear measurements on a standardized head and ear canal

    KEMAR is an acoustic manikin that allows real-ear simulation measurements in a controlled, repeatable environment.

  6. Which type of microphone configuration in a hearing aid provides the greatest directional benefit in a noisy restaurant?

    Answer: Adaptive directional microphone

    Adaptive directional microphones continuously track and null noise sources from varying directions, providing superior SNR benefit in complex noise environments.

  7. When fitting a patient with a unilateral severe-to-profound hearing loss and normal hearing in the other ear, which device option routes sound from the impaired side to the better ear?

    Answer: CROS fitting

    A CROS (Contralateral Routing of Signal) system transmits sound from the non-hearing side to the normal-hearing ear without amplification.

How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. ihsinfo.org — Time limit, test delivery, eligibility, fees, retake policy · verified Oct 2026
  2. myhome.ihsinfo.org — Passing score, retake fee · verified Oct 2026