Tag Archives: galster

#acoustics

A plastic cup makes for a simple and effective instant speaker.

 

Patients with higher cognitive function may benefit more from hearing aid features

This month’s review discusses an in-press publication from Dr. Ng and colleagues. The authors documented participants’ cognitive status through a series of tests that exercised working memory. They found that hearing aid features such as digital noise reduction provide mild improvements to information retention: an effect that was more pronounced for participants with higher cognitive function.

http://buff.ly/1gTD3WM

Open Access Recordings for Developing Speech Maskers

For those of you involved in hearing research, available online are open access recordings for the development of competing speech maskers. There are 8 male and 8 female talkers, each is reading the English language ‘Rainbow Passage’ at normal conversational effort. The source files are match for RMS level but left unshaped, retaining their original spectra.

Download Files

Hearing Aid Behavior in the Real World

Many people, both patients and audiologists alike, wonder how hearing aids behave once they leave the quiet office and enter the acoustically complex real world. Modern hearing aids offer gross estimates of environmental acoustics and signal processing behavior in reports called data logging. These data logging reports tend to be summaries over long periods of time, offering limited detail into different acoustic environments and how the hearing aid responds to each environment.

In order to address these questions, Banerjee (2010) provided a group of research participants with hearing aids that were connected to a small external device capable of logging and storing data in real time.  This month’s blog post reviews her findings.

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2013 Pediatric Amplification Guidelines for Clinical Practice

The American Academy of Audiology has approved the 2013 Clinical Practice Guidelines for Pediatric Amplification. Creation of these guidelines reflects diligent collaboration among 15 experts over three years time. This substantive revision is the first since 2003 and includes updates that reflect the current state of hearing aid technology and clinical knowledge in pediatrics.

AAA 2013 Pediatric Amp Guidelines

You’re getting older. Are your listening demands decreasing? Is your social network shrinking?

There’s a common assumption, one supported by past research, that older people with hearing loss will have a smaller social network and demonstrate a tendency to avoid difficult listening situations. Drs. Wu and Bentler used a combination of questionnaires and sound level measurements to understand the differences in some social patterns between younger and older people with hearing loss. This month’s post reviews their work.

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The Master Hearing Aid

An upcoming issue of Trends in Amplification will include an article that I had the pleasure of writing with Jim Curran. Jim has been in practice for over 40 years and holds the distinction of being one, if not the first, audiologist to fit hearing aids in a private practice setting. A distinction that, in the early 1970’s, resulted in his dismissal from the American Speech and Hearing Association. A striking illustration of how times have changed.

In this article we discuss a nearly forgotten history of the Master Hearing Aid. Long before probe microphone measurement and prescriptive formulae, these early systems were used to simulate the listening experience of hearing aids. Jim has done an excellent job of capturing this history and taking the reader from these earliest days of hearing aid fitting to the modern techniques used today.

Read: The Master Hearing Aid

Does lip reading take the effort out of speech understanding?

This month we take a look at an ahead-of-print article in Ear & Hearing. The reviewed study out of Vanderbilt used several different approaches to teasing out the relationship between listening effort and any interactions that arise with and with out lip reading cues.

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Individual Variability in Aided Outcomes

The current issue of Seminars in Hearing is focused on the topic of individual variability in aided outcomes. Those working in hearing care, both clinical and research, can attest to the fact that individual variability is an inherent component of our daily routine. The example of two patients with identical diagnostics but widely varying hearing aid outcomes is one that characterizes many hearing aid fittings.

As guest editor for the issue I was excited to select this topic and recruit a talented group of authors. These authors are well respected researchers in a variety of areas related to hearing aid outcomes; each brings a unique insight to the topic of individual variability.

Preface: Individual Variability in Aided Outcomes: Galster, J. Read

Individual differences research and hearing aid outcomes: Humes, L.

Individual variability of hearing-impaired consonant perception: Trevino, A. & Allen, J.

Individual variability in recognition of frequency-lowered speech: Alexander, J.

Individual variability in benefit from fixed and adaptive directional microphones: Galster, J. & Rodemerk, K. Read

Individual variability in unaided and aided measurement of the acceptable noise level: Eddins, D, Arnold, M., Klein, A., & Ellison, J.

Will my patient benefit from audiologic rehabilitation? The role of individual differences in outcomes: Abrams, H. & Chisolm, T.

Publisher’s website

On the Value of Real-Ear Measurement in the Fitting of Hearing Aids

Welcome spring with an article on the value of real ear measurement. This month we reviewed an article from Dr. Harvey Abrams and colleagues in which they showed that a patients fit to verified prescriptive targets report significantly superior outcomes to those that are left at the first-fit settings.

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