How to become a Hearing Instrument Specialist (HIS)

Evaluate hearing loss, select and fit the best hearing instrument, and guide a growing 55-plus market toward better daily living through a rewarding hearing instrument specialist career.

Identify the main hearing loss types—conductive, sensorineural, mixed, central, and nonorganic—and recognize outer and middle ear disorders that require referral.

Explore the anatomy of sound by detailing sound waves and their characteristics: wavelength, amplitude, time period, frequency, velocity, and how compression and rarefaction define sound, perception, and measurement.

Explore the evolution of hearing aids from early ear trumpets to digital, programmable devices, and learn practical fitting and programming techniques to tailor devices to patients.

Apply the six-step troubleshooting process to hearing aids, from identifying the problem to verifying functionality, and fix common issues by checking batteries, cleaning receivers, and programming for noisy environments.

Access links to state official government websites, review state guidelines and regulations, and download and study the state exam materials for the hearing instrument specialist test.