Hearing Treatment
Fitting Asymmetrical Hearing Losses
A review of three commonly overlooked areas that relate to audiometric test results, the length of time the patient has been without amplification, and knowledge of the patient's mind-set regarding amplification choices.
Mind the Ports! The Effect of Severe Microphone Inlet Occlusion
Maintaining microphone ports, ensuring they are free from occlusion, is very important to the function of the hearing aid. Severe occlusion of the rear microphone port may produce values of greater than 15 dB of increased output for non-frontally arriving sound that is otherwise attenuated by the directional processing.
Compression in Hearing Aids: Why Fast Multichannel Processing Systems Work Well
References in the academic literature maintain that flattening of the speech envelope by fast multichannel amplitude compression reduces speech intelligibility—references that typically ignore the counteracting effect of recruitment. A perspective from one of the pioneering engineers of compression in hearing instruments.
MPO: A Forgotten Parameter in Hearing Aid Fitting
It is important to select a hearing aid with a sufficiently high MPO such that the desired gain plus the input levels would not be limited by the MPO. The same considerations should also be applied to setting the MPO on a hearing aid in order to ensure maximum audibility and optimal SNR, while considering listening comfort.
Reported Hearing Aid Use Versus Datalogging in a VA Population
The objective analysis afforded by datalogging can provide the clinician with information to more effectively program the hearing aids and counsel the patient; however, the clinician is ultimately responsible for knowing how to use that information appropriately—particularly when there is a discrepancy between the user report and the datalogging.
Products and Resources
MedRx Enhances REM Speech Probe Microphone Design
The new design includes the ability to conduct simultaneous or individual FFT dual probe measurements and if desired, be able to speech map both ears at the same time. The company also released its new Sure-Probe probe tube assembly that allows the tester to place the probe tube into the ear canal and ensure that it stays in place while inserting the hearing instrument.
7/17/2008
People and Events
Phonak Announces 3rd European Pediatric Conference
The 3rd Phonak European Conference on Pediatric Amplification Solutions will be held in Brighton, England, this November.
7/10/2008
Products and Resources
Plural Releases Three New Books
Plural Publishing has released the Hearing Disorders Handbook by Miller & Schein; Auditory Steady-State Response by Rance; and Digital Hearing Aids by Kates.
5/15/2008
People and Events
Bill Cole Honored By NASED
Bill Cole, a pioneer in the development of hearing aids and hearing testing equipment, was honored with the National Association of Special Equipment Distributors' highest award.
4/24/2008
News: Around The (Acoustic) Horn
Patent Approved for R-Space Sound System
The system has been designed to provide accurate simulations of real-world acoustic environments, while offering the advantages of efficiency, control, and repeatability found only in a laboratory.
3/20/2008
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