Hearing Conservation

determining sound source
The World Health Organization (WHO) is promoting its “Make Listening Safe” campaign to raise awareness of recreational noise-induced hearing loss on March 3, 2015: International Ear Care Day.
Crowd at Live Music Venue
The HEARing Cooperative Research Centre (HEARing CRC) in Australia launched a pilot study to determine how live music venues in Australia can reduce their noise levels to be more “hearing friendly.”
Honeywell has announced a free software upgrade for its VeriPRO earplug fit-testing system. The upgrade to VeriPRO 3.0 offers users a more efficient and user-friendly way to fit-test earplugs.
Siemens has also produced an infographic that summarizes the study and provides useful tips for hearing conservation.
A new study commissioned by Siemens Hearing Instruments suggests that teen hearing loss may be on the rise, with 1 in 6 teens showing hearing loss symptoms often or all of the time, and nearly 9 in 10 engaged in activities that could place them at risk for hearing loss.

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Marshall Chasin, AuD
Marshall Chasin, AuD, shows why assymetric hearing loss does not necessarily rule out a noise-induced component.
Lil Mike is an animated rapper aimed at improving ear health within the Aboriginal community in Australia.
"Can we get to the point where hearing aids, like glasses, are the symbol of a solution, rather than a problem?" Dennis Van Vliet, AuD ponders that question in the August 2014 Final Word column.
Figure 2a-b. 2A: 3DAA IEM earpiece in situ with built-in ambient microphone. 2B) Sensaphonics 3D-AARO in-ear-monitor (IEM) belt pack and earpieces, depicted with “microphone outputs” (new) and “monitor input” ports. Operating mode switch is set to “performance” position. Internal ambient gain switch (not shown) set to “off.” (Photos provided by Sensaphonics.)
Larry Revit, MA, a performing musician, sound engineer, and audiologist, reports on an audio system built around a unique wide-band, high-fidelity in-ear-monitor system that has binaural microphones imbedded in the earpieces.
Figure 2A
High-fidelity hearing protectors preserve the sound quality of music and voices, and are the best choice for most musicians’ hearing protection needs.
Martin Pienkowski, PhD
Martin Pienkowski, PhD, has received a $20,000 grant from the Pennsylvania Lions Hearing Research Foundation to research potential risks to the hearing of people working or living in moderately noisy environments that are presently considered safe by occupational noise exposure standards.
The new Howard Leight FirmFit™ earplugs feature a soft, comfortable fit, and improved noise protection for users of classic-style foam earplugs.
The left figure shows an inner hair cell, with its hair bundle at one end and with 3 of its roughly 20 synapses with cochlear nerve terminals at the other end. The cell's nucleus is shown in red, and each synapse is marked by a smaller red dot. Immunostain recognizes a molecule present in the nucleus and also in a key synaptic component within the hair cell, called a “ribbon.” The images shown on the right were taken with a confocal microscope. The upper image shows 8 inner hair cells from a normal ear (each cell has one large red nucleus) and about 150 small red dots (arrowheads), each of which shows a synapse between a hair cell and a cochlear nerve fiber. The bottom image shows another ear a few days after exposure to a noise that caused only a transient threshold elevation. The confocal image shows no loss of hair cells, but a striking loss of synapses, which will never recover.
The new findings suggest that noise-induced hearing loss has another very important component beyond just hair cells: the loss of cochlear nerve fibers.
Noise exposure and perceptions of hearing were explored through a survey of 344 college students in forestry and wildlife management courses. Results support the need for education about noise-induced auditory damage along with promotion of healthy hearing habits at the collegiate level.
EAR Inc Adjustable Hearing Screener & Fit Check
A hearing screener from E.A.R. is designed as inexpensive and effective way to increase referrals, as well as check the attenuation and fit of hearing protection.
In Part 4 of this 5-part series, our roundtable takes on the topics of marketing and outreach to physicians, changing attitudes about hearing aids in younger patients, and a greater willingness to try new technology.

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Recent evidence has demonstrated that, although noise and aging play large roles in hearing loss, cardiovascular health and fitness also influence hearing acuity. Part 2 of this 2-part article looks at body composition and hearing loss, as well as other contributing factors.
BHI Website
The Better Hearing Institute (BHI) announces the launch of its newly remodeled website, www.BetterHearing.org.
benson audiometer
The CCS-200 spirometer is now available from Benson Medical Instruments.
Benforankret høreapparat
The Technical University of Denmark (DTU), Oticon, Widex, and GN ReSound will open a new research facility on the campus of DTU.
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Oticon Foundation, Somerset, NJ, has announced a $1.1 million grant to the Technical University of Denmark to fund a new research group in hearing diagnostics.