Hear The Music

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Nov. 29, 2016

Some Suggestions from Dr. Brian C. Moore

Marshall Chasin
Brian C Moore, PhD from Cambridge in the UK recently had a paper published in the International Journal of Audiology (IJA) with the title “A review of the perceptual effects of hearing loss for frequencies above 3kHz”. The IJA is the official journal of the International Society of Audiology and the Society holds biennial international conventions. The most recent one was
Nov. 22, 2016

The Golden Lobes and the Pinna Effect

Marshall Chasin
I just returned from the Association of Independent Hearing Healthcare Professionals (AIHHP) conference in Nottingham, England, but I didn’t see Robin Hood, or had any time to go to Sherwood Forest.  I did however give several talks about musicians, and so did our HearingHealthMatters.org editor Brian Taylor; he spoke first and by the time I arrived in Nottingham, Brian was
Nov. 15, 2016

The Hearing Aids for Music Project

Marshall Chasin
The Hearing Aids for Music Project is a new project from Leeds University in England. Traditionally, the two phrases “hearing aids” and “great sounding music” do not belong in the same sentence.  There are a number of reasons for this and include issues relating to frequency bandwidth, compression, front end analog to digital features, and how “advanced features” interact with music.
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Nov. 08, 2016

A standard for music such as ANSI S3.22?

Marshall Chasin
For all of the criticisms of ANSI S3.22, this is a great standard… how’s that for an opening statement? ANSI S3.22 is how hearing aids are assessed in the clinic as well as at the manufacturer’s facility.  It is a quality control measure and known as a “reporting standard”.  That is ANSI S3.22 tells us precisely how to measure a
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Nov. 01, 2016

Electronic Hearing Protection for Musicians (and Hunters)

Marshall Chasin
From time to time I fit electronic hearing protection for musicians or hunters. The idea is that electronic hearing protection would provide slight amplification for soft level sounds but hearing protection (sound attenuation) for overly loud sounds. These devices are really just hearing aids in disguise  – they are typically, but not always, digital, have a microphone(s), an amplifier, and a
Oct. 25, 2016

My rant about the iPhone 7

Marshall Chasin
I only recently switched from my old Blackberry which I have been using since the 1970s.  It is true that the Blackberry was slow, was almost impossible to use apps, but had some neat elevated buttons. My new phone (for about a year now) is the iPhone 6.  It has great apps and its usability is infinitely better than my
Oct. 18, 2016

The 5.1 sound system – part 3

Marshall Chasin
My home stereo system has 6 speakers – I counted them!  Yet, this set up is called a 5.1 sound system.  What’s going on? My first thought was that the guy who installed it couldn’t count.  My next thought was that the manufacturer really wanted to call it 6.1 or at least 6.0, but certainly not something that sounded less
Oct. 11, 2016

Bass reflex loud speakers- part 2

Marshall Chasin
Bass reflex loud speakers design have an uncertain past.  Most authorities would agree that the bass reflex loudspeaker was conceived of in the late 1940s, but there is some data from old audiology textbooks that this idea was used in hearing aids long before it appeared in loudspeaker design. The bass reflex loudspeaker has a simple design; it is a
Oct. 04, 2016

The Acoustic Suspension Loudspeaker – Part 1

Marshall Chasin
Ed Villchur had many credits to his name.  He actually lived in Woodstock, New York, and for years after the famed concert, had people stopping by his house asking for directions to the Yasgar farm (which wasn’t in Woodstock). When I met Ed, he indeed had long hair much like those who attended the Woodstock concert 15 years earlier.  (I’d had
Sep. 27, 2016

Caffeine and Noise Exposure

Marshall Chasin
I love my morning coffee. And my afternoon coffee. Also, my evening coffee.  I am not sure how much I drink every day because I usually buy a cup of coffee, take several sips, and then get busy. I may come back to a half full cup of cold coffee several hours later, or not. Although I am not a