Ask An Audiologist: What Exactly Is Real Ear Measurement?

At its core, REM is a process where an audiologist measures the sound pressure level in an individual's ear canal when a hearing aid is being used.

April 8, 2024

When seeking the most effective fitting for hearing aids, we often come across the term real ear measurement (REM). This method is lauded as a cornerstone of personalized hearing care, ensuring that each hearing aid user receives a tailored listening experience. At its core, REM is a process where an audiologist measures the sound pressure level in an individual's ear canal when a hearing aid is being used. This technique allows us to verify that the hearing aid is amplifying sounds to levels that match the user's specific hearing needs.

Grasping the significance of REM involves understanding that every person's ear anatomy can affect how sound is delivered. This is why just setting a hearing aid based on one’s audiogram is not enough; real ear measurements take the personal acoustic properties of an individual's ear canal into account. Using a thin probe tube, we can measure the actual sounds that reach the eardrum, ensuring that the hearing aid does its job effectively in a real-world setting.

To further understand how REMs enhance the hearing aid fitting experience, consider it a fine-tuning process. It is not only about reaching the prescribed sound levels but also about accommodating one's unique sound preferences and listening environments. Our goal through real ear measurement is to confirm that the hearing aid provides the correct volume and sound quality, leading to improved speech understanding and listening comfort.

Hearing Aids to Treat Hearing Loss

We understand that hearing aids are a crucial solution for many individuals experiencing hearing loss. They are devices designed to improve hearing by making sound audible to a person with hearing loss. Audiologists are healthcare professionals specialized in managing hearing loss, tinnitus, and balance disorders. An audiologist will perform a hearing test, known as an audiogram, to determine the type and degree of hearing loss. This test is essential because it informs which hearing aid will best suit your needs.

Hearing aids come in various styles, and the most effective one depends on the individual’s audiogram results. It's not just about amplifying sound; it's about customizing the experience to the user's specific hearing profile. Some hearing aids are placed completely in the canal, making them virtually invisible and less prone to catching wind noise. For adults with mild to moderate hearing loss, this type could be ideal.

To ensure the best results, hearing aids must be precisely fitted and adjusted by an audiologist. Fittings are most effective when paired with real-ear measurement, which helps verify the hearing aid's effectiveness within the ear canal. With proper fitting, hearing aids can significantly improve the quality of life for someone with hearing loss, allowing them to engage in conversations and enjoy sounds that they might have been missing.

When it comes to more severe forms of hearing loss, an audiologist might discuss alternative solutions such as cochlear implants if hearing aids are not likely to be effective. Our role is to guide you through these options and help you achieve the best auditory experience possible with the right device.

Understanding Real Ear Measurement

Real Ear Measurement (REM) is a pivotal process for ensuring the efficacy of hearing aid fitting. By assessing how well a hearing aid amplifies sound within the ear canal, REM significantly contributes to personalized hearing aid settings.

Purpose of Real Ear Measurement

The primary purpose of Real Ear Measurement is to verify that a hearing aid is providing the correct amplification levels needed for an individual's specific hearing loss. This process is critical because each person’s ear canal is unique, and hearing aids must be tailored to account for these differences. By conducting REM, we can measure the sound pressure level in the ear canal and adjust the hearing aid's settings to match predetermined acoustic targets.

The Role of Verification in Hearing Aid Fitting

Verification in hearing aid fitting is crucial, and that's where real ear measurement excels. It acts as a quality check to ascertain that the hearing aid's amplification matches the prescribed target for the wearer's hearing loss. By using equipment such as a probe microphone, REM verifies the sound levels the patient actually receives, allowing us to make adjustments in real-time for optimal hearing aid performance.

Real Ear Measurement is a best practice that is backed by robust evidence demonstrating its merit for customized hearing aid tuning. Without REM, the risk of under- or over-amplification is significant, potentially leading to discomfort or further hearing challenges. Our goal is to ensure that each user experiences optimal hearing aid performance, and REM is an indispensable tool in achieving this.

Through these precise and individualized adjustments, we ensure your hearing aids perform at their best, improving overall satisfaction with the hearing aid experience. We cannot emphasize enough the necessity of REM in both quiet and noisy environments to test the hearing aid's response to different levels of background noise, thus enhancing the user's hearing in a variety of real-world situations.

In our practice, the real-ear measurement procedure is a critical component of fitting hearing aids. This evidence-based method allows us to accurately assess and adjust hearing aids for individual ear acoustics.

What to Expect with Real Ear Measurement Procedures

Before beginning the test, we ensure the patient's ear canal is clear. We examine the ear canal with an otoscope to check for wax or debris. Once clear, we prepare the real-ear measurement equipment, calibrating the real-ear analyzer to ensure accurate results. The equipment includes a probe microphone system that we carefully position within the patient's ear canal.

Conducting the Test

With the probe tube placed approximately 5 mm from the eardrum, we conduct the test. This entails presenting various sounds through the hearing aid while it is worn by the patient. The probe microphone captures the sound levels in the ear canal to measure how the hearing aid amplifies sounds in the real-ear environment.

Interpreting the Results

Once we have conducted the real-ear measurement, we analyze the sound levels against a prescribed target. This allows us to see how closely the hearing aid's performance matches the patient's hearing loss profile. We make precise adjustments to the hearing aid settings based on this data to ensure optimal hearing aid performance tailored to the patient's needs.

Benefits of Real Ear Measurement

Real ear measurement (REM) is an integral part of tailoring hearing aid devices to individual needs, ensuring that patients receive optimal amplification of sound. Let's examine how REM enhances hearing aid performance and the personalization it brings to hearing care.

Enhanced Hearing Aid Performance

Firstly, REM significantly improves the accuracy of hearing aid fittings. This process measures the sound pressure level in the ear canal, which varies greatly among individuals. A hearing aid programmed via REM provides more precise amplification, which is essential for understanding speech in both noisy and quiet environments.

Comparison to Prescriptive Methods

Real ear measurement (REM) differs significantly from prescriptive methods which calculate the hearing aid settings using formulas based on the patient's audiogram. While prescriptive methods offer a theoretical starting point, REM provides an individualized fit by measuring the sound pressure level directly in the ear canal. This direct approach ensures that the hearing aid amplifies sound to the exact levels needed for each patient's unique ear anatomy.

Real Ear Measurement in Sioux Falls

REM is crucial for the customization of hearing care. Each person's ear canal has a unique shape and size, which affects how sound is delivered. By incorporating REM into the fitting process, our Audiologists can adjust the hearing aid settings to match the specific acoustic properties of the individual's ear canal. This personalized approach can lead to enhanced satisfaction and comfort with hearing aids.

Through these methods, REM assists us in offering hearing solutions that are not just effective but also custom-tailored for the best possible user experience. Contact us today to schedule an appointment.

Written by
Reviewed by
Mandy Rounseville-Norgaard Au.D.
Audiologist
Read full bio

Dr. Norgaard has over 15 years of experience in practicing audiology, and a lifetime of experience wearing hearing aids. Dr. Norgaard was born with significant hearing loss in both ears and has worn hearing devices since the age of 3.

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