Hear The Music

Feb. 12, 2013

Beyonce is obviously a “closet audiologist”

Marshall Chasin
The big news item in the United States recently is that it was found that Beyonce didn’t really sing live during the presidential inauguration, but just mouthed the words.  This news only hit Canada and the rest of the world now since it’s so cold outside that news (and the speed of sound which is a function of temperature) is
Feb. 05, 2013

Control methods in assessing musicians’ earplugs Part 2.

Marshall Chasin
Last week we talked about using a higher stimulus level to assess the benefit of a musicians’ earplug.  Actually it was for all hearing protectors, but since this is a blog about music, this applies equally to musicians’ earplugs.  In that blog we talked about using a real ear measurement system and using the normal stimulus that comes with such
Jan. 29, 2013

Control methods in assessing musicians’ earplugs, Part 1

Marshall Chasin
This is a really neat topic, even if the title is really boring.  “Control methods….” of anything sounds dull.  This is actually a stolen title off an historically important article from the 1950s “Control Methods used in a study of vowels” by Gordon Peterson and Harold Barney (1952).{{1}}[[1]]Gordon E. Peterson and Harold L. Barney, “Control Methods Used in a Study
Jan. 22, 2013

Digital, analog, and acoustic amplification- three generations of approaches to the same problem…

Marshall Chasin
Several weeks ago a friend of mine came over.  He is about 15 years younger than I and is a drummer for a rather famous rock band.  My son had just come home, having recently graduated from the Berklee School of Music in Boston.  And for Christmas, I had just received an ironically low-tech acoustic amplifier for my iPad. Here
Jan. 15, 2013

We can’t always measure a hearing loss

Marshall Chasin
This guest blog is by Patricia Johnson… and it is about things that may go wrong in your hearing system that we don’t clinically have the ability to assess.  Dr. Johnson received her Master’s degree in Audiology from the University of Iowa and her AuD from Salus University.  Her professional experience spans pediatric and educational audiology, industrial hearing conservation, university
Jan. 08, 2013

The Musicians’ Dividend

Marshall Chasin
Just prior to the Christmas break I blogged about the lack of cost effectiveness in seeing musicians versus clients who may need hearing aids.  In that post I bemoaned the fact that we are now working in not only a market economy but also a market society, where policy and funding decisions are made based on the bottom line, rather
Jan. 01, 2013

Best of Marshall Chasin: The benefits of distortion in music (and speech)

Marshall Chasin
Our first knee jerk reaction is that the word “music” and the word “distortion” should not be uttered in the same sentence. Music is good (or at least should be of high fidelity) and distortion is, well,… distortion. But if it weren’t for distortion, music would be thin and boring, and speech would be completely unintelligible. Without distortion, music would
Dec. 24, 2012

Readers’ Choice 2012: Do ER-15 musician earplugs really work?

Marshall Chasin
There was a recent presentation given at the National Hearing Conservation Association (NHCA) conference last month questioning the integrity of the ER-15 uniform attenuator for musicians. The ER-15 custom made earplug has been available since 1988 and provides a much more uniform attenuation (lessening of sound energy) across the frequency region than other types of hearing protectors that have been
Dec. 18, 2012

Working with musicians is not cost-effective

Marshall Chasin
This is a comment I hear frequently from my colleagues and is used as an excuse not to work with musicians.  It’s actually the same comment that I hear for those who don’t want to offer aural rehabilitation classes, or sell inexpensive assistive listening devices.  Alas, the comment is both true and unfortunate. It really is simple arithmetic.  If an
Dec. 11, 2012

Is a single channel hearing aid better for music than a multi-channel hearing aid?

Marshall Chasin
What a good question!  And also what a great Capstone project this would be for an Audiology student!  The short answer is that we don’t really know, but here is the slightly longer answer. Music, like speech, has lower frequency fundamental energy, and then a series of higher frequency harmonics whose frequencies depend intimately on the acoustic characteristics of the