What key factor does Real Ear Insertion Gain (REIG) measure?

Real Ear Insertion Gain (REIG) measures the volume difference between the sound entering the ear canal and the amplified sound delivered by the hearing aid. This measurement is crucial because it helps audiologists and hearing aid dispensers determine how effectively a hearing aid is amplifying sounds for the individual user. By comparing the sound levels before and after the hearing aid is inserted, the REIG provides insights into the acoustic performance of the device within the specific anatomy of the ear canal.

This measure takes into account the unique shape and characteristics of a person's ear, which can significantly affect how sound is processed. Understanding the REIG allows for better customization of the hearing aid settings to match the user's hearing loss profile, thus enhancing the overall effectiveness of the hearing aid.