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Canadian Audiologist

Vol. 12 • Issue 4 • 2025

The Official Publication of the Canadian Academy of Audiology

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Features

Editor’s Note: Quick Answers
by Marshall Chasin
Why Are Tuning Curves Wider At The Top? Why Aren’t The Edges Straight Vertical Lines?
by Steve Aiken
Why Do We Have “Central Gain”? Why Is The Neural Signal Amplified (And Not Attenuated) As It Progresses Up The Auditory System?
by Brandon T. Paul
Out-of-Control Positive Feedback
by Robert V. Harrison
If You are Performing an Insertion Gain Measurement, Do You Need to Subtract the REUR If It’s a Non-occluding Fitting?
by John Pumford
My Patient Has An Open Vent In Their Earmold and I Plan To Measure Their Earmold RECD and Then Fit the Hearing Aid In the Test Box. Should I Leave The Vent Open?
by Susan Scollie
When you do REM on a CROS or BiCROS do you measure both ears, or just the better ear? My mom wears BiCROS and we are seeing her audiologist tomorrow.
by Christopher Scot Frink
Why Is It Crucial To Measure Bone Conduction Hearing Thresholds Directly with the User’s Specific Device and Connection In Place?
by Bill Hodgetts
An Advantage of Bone Conduction Devices Is That There Will Not Be Feedback—True or False?
by Alex Gascon
Should I Apply An Air-Bone Gap Correction As Default When Fitting Air Conduction Hearing Aids?
by Jennifer Groth
Why Can Normal Hearing People Hear Better In Very Noisy Places With Earplugs?
by Steve Armstrong
Is Someone with a Hearing Loss More (or Less) Susceptible to Future Hearing Deterioration from Loud Than Those with Normal Hearing?
by Marshall Chasin
Is There Evidence for Screening for Vertebral Artery Insufficiency Before Maneuvers That Requires Neck Manipulation Such As The Epley Maneuver?
by Erica Zaia
Why Is A Home Theatre System Marketed As A 5.1 System Rather Than A 6 System Even Though There Are 6 Loudspeakers?
by Marshall Chasin
Clinical Audiologists May Find It Confusing When Engineers Talk About Inductors, Resistors, And Capacitors As Simulators Such As “The Earmold Vent Functions As A Capacitor”. Audiologists Really Only Talk About Why A Certain Structure Such As An Earmold Vent Allows For The Reduction Of Low Frequency Sound Energy.
by Steve Armstrong
My Patients Almost Never Report Difficulty Hearing Nature Sounds (E.G., Birds, Bubbling Creeks) During Their Initial Consultation. Does This Mean They Can Hear These Sounds Or That These Sounds Aren’t Important To Them?
by Dina Lelic Erin Picou Valeriy Shafiro Christian Lorenzi
Doesn’t Putting a Sound Field Amplification System into a Noisy Classroom Just Add to the Overall Sound Level, and Isn’t That a Bad Thing?
by Pam Millett
Clinically We Occasionally See 2-Year-Old Children with an Inquiry of Speech Delay and They Want to Verify Normal Hearing Before an SLP Referral. And Sometimes the Child Is Learning Two Languages at the Same Time at Home. If There Is A Speech Delay (Or Concern About A Speech Delay), Should the Parents Be Encouraged To Only Speak One Language at Home, Or Continue With the Two Languages?
by Olivia Daub
What Should Audiologists Tell Their Clients About Hearing Aids And Reducing Dementia Risk?
by Kathy Pichora-Fuller
A Cheat Sheet of What People with Hearing Loss Need from Their Audiologist
by Gael Hannan
With the Increase In Measles Cases In Canada, Should Early Hearing Detection and Intervention Programs Include It As A Risk Indicator During Newborn Hearing Screening?
by Marlene Bagatto
My Patient Is Planning To Start A Group Fitness Class Soon And Asked Me About Wearing Hearing Aids To The Gym. Is There Anything I Should Be Considering?
by Mohamed Rahme
Are All of the Measuring Tools for RIC Receiver Lengths the Same across Manufacturers?
by Peter Hutchison

Columns

Departments

View Tag: ‘CROS’

Volume 12

When you do REM on a CROS or BiCROS do you measure both ears, or just the better ear? My mom wears BiCROS and we are seeing her audiologist tomorrow.

by Christopher Scot Frink, AuD, FAAA

There is nothing to measure for REMs in the bad ear; there’s no output there! It’s all going to the better ear.

Volume 3

The CROS Hearing Aid: Ends and Beginnings

by Marshall Chasin, AuD Neil Bauman, PhD

In the first part of this unique feature, Marshall Chasin pens an obituary regarding the recent “death” of the CROS Hearing Aid. In the second part of this feature, Dr. Neil Bauman explains, that while Harry Teder patented this concept back in 1964, in actuality, CROS hearing aids had already been in use for 10 years by this time without anyone even realizing it!

Volume 1

How Open Canal Amplification Was Discovered

by James R Curran

James R Curran, MS of Starkey Hearing Technologies tells us why he thinks the introduction of CROS amplification is the most significant development in hearing aids over the past 50 years.

The First Wireless CROS

with Harry Teder

Harry Teder tells us about the first wireless CROS.