Skip to content

Real-Ear Measurement and Verified Hearing Aid Fitting

Hearing Aids · Best practice

What is real-ear measurement, and does ZN Audiology do it?

Real-ear measurement verifies what a hearing aid is actually doing inside your ear canal, using a probe microphone, rather than trusting the manufacturer first-fit setting. ZN Audiology performs real-ear measurement at every hearing aid fitting, with speech mapping as part of verification. It is the professional standard for verified fitting and not every provider performs it.

Audiologist standing beside ZN Audiology’s Verifit 2 system
The practice’s Verifit 2 hearing aid verification system.

About Real-Ear Measurement and Verified Fitting

A soft probe tube sits in your ear canal alongside the hearing aid and measures the sound pressure the device is actually producing at your eardrum. That measurement is compared against the prescribed target for your own hearing loss, taken from your diagnostic evaluation.

The manufacturer’s first-fit setting is computed from an average ear. Yours is not an average ear — canals differ in length and shape, and those differences change what actually arrives at the eardrum by several decibels. That gap is the entire reason the measurement exists.

Professional guidance describes in-situ verification as the most direct method of checking a hearing device, and as a standard of care rather than an optional extra. In one published comparison, close to 80 percent of participants preferred the fitting achieved with real-ear measures over the manufacturer first fit.

What this includes

Performed as standard
It is part of a fitting here, not an upgrade, and not something you have to know to ask for.
Devices fitted elsewhere can be measured
A hearing aid that "does not work" is often a device that was never verified. Measuring it is usually the first useful step.
Individual ear acoustics
Verification accounts for the acoustic properties of the individual ear rather than relying on a manufacturer’s average-ear setting.
Both clinics
Real-ear measurement and speech mapping are performed at Forest Hills and at Midwood, Brooklyn.

What actually happens

  1. 01

    Diagnostic evaluation

    A full hearing assessment establishes the type, degree and configuration of the loss. Everything downstream is built on this measurement.

  2. 02

    Device selection

    A device is chosen against that audiogram and your listening life, from all major manufacturers rather than a single brand.

  3. 03

    Probe-tube measurement

    The probe microphone measures real output at the eardrum against the prescription target, using calibrated speech as the stimulus.

  4. 04

    Adjustment and re-measurement

    The fitting is adjusted and measured again until the output matches the target rather than the default.

  5. 05

    Speech mapping and follow-up

    Speech mapping shows how real speech lands across frequencies, and follow-up appointments refine it as you wear the device.

A closer look at the practice’s equipment

These photographs show ZN Audiology’s Verifit 2 system and a fitting session at the practice.

Audiologist positioning equipment at a patient’s ear during a fitting session
An audiologist works with a patient during a hearing aid fitting session.
Verifit 2 display and closed hearing aid test chamber at ZN Audiology
The Verifit 2 display and closed test chamber.
Open Verifit 2 test chamber with a hearing aid positioned inside
Inside the test chamber, with a hearing aid positioned for measurement.

Questions about real-ear measurement and verified fitting

Real-ear measurement uses a thin probe microphone placed in your ear canal to measure the sound a hearing aid is actually delivering at your eardrum. That measured output is compared against the prescription target for your specific hearing loss, rather than assuming the manufacturer default is correct for the shape and size of your ear.

Book with an ASHA-certified audiologist

Book online through Zocdoc, or call your preferred clinic to discuss an appointment.

More about your hearing care

Content prepared for ZN Audiology. Clinical review by the practice is pending.

How this content was prepared