Navigation Links
Sound safety
Date:5/12/2011

g balloon, uses a novel, miniaturized technology called an Asius Diaphonic PumpTM to inflate the polymer membrane.

The pump, developed with support from NSF's Small Business Innovation Research program, converts the alternating, compression-expansion waves of sound into a direct-flowing stream of molecules, filling the membrane using only minimal energy from the headphone speaker. The pump has enough force to both inflate the ear lens and keep the device comfortably in the ear canal for as long as the device is worn.

"The lens maintains desirable audio fidelity, especially at bass frequencies, and prevents feedback," says Gido. "The flexible membrane vibrates with the oscillating sound pressure in the sealed ear canal and radiates excess sound energy out of the closed space in front of the ear drum. In a sense, the flexible polymer membrane behaves like a second ear drum, which is more compliant than the real ear drum, allowing it to direct excess sound energy away from the sensitive structures of the ear."

The pump takes advantage of a physical property called a synthetic jet, a column of fluid that erupts when an acoustic wave passes through a small hole.

Sound waves are compression and rarefaction waves - specifically, symmetric pulses of alternating compressed and expanded air molecules. Our ears interpret the alternating pulses as sound.

"As sound waves pass through any given small hole, the alternating pulses emerge and retract through the orifice like a small air-piston, hitting and knocking the surrounding air molecules forward like billiard balls," says Ambrose. "Other molecules join in the stream from the sides due to the low pressure created by the flow. This results in a sustained jet of air."

By integrating an inward flowing jet into the side of the sound port, Asius transformed a standard synthetic jet into a real pump capable of harvesting and storing inflation and deflation pressures.

"Our support of
'/>"/>

Contact: Josh Chamot
jchamot@nsf.gov
703-292-7730
National Science Foundation
Source:Eurekalert  

Page: 1 2 3 4 5

Related medicine news :

1. New technology fuses MRI, ultrasound to achieve targeted biopsy of prostate cancer
2. Ultrasound combined with pre-operative MRI is cost effective in evaluating rotator cuff tears
3. Inner Ear Can Store Recent Sounds, Study Finds
4. High-volume portable music players may impair ability to clearly discriminate sounds
5. Sea grant awards more than $1.1 million for research under EPAs Long Island Sound study
6. Bedside ultrasound becomes a reality
7. That Squeaking Sound Might Come From Your New Hip
8. Look-and-Sound-Alike Names Account for Many Painkiller Prescription Errors
9. Microbubble ultrasound and breast biopsies
10. Ultrasound and a blood test can increase survival after myocardial infarction
11. AIUM announces ultrasound practice accreditation in fetal echocardiography
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Sound safety 
(Date:4/19/2015)... Carinsurancehints.com has released a new blog post providing a simple ... benefits . , Drivers who were involved in an ... for claiming auto insurance benefits. Exchanging insurance information is important, ... of the damages. The newly released blog post explains how ... Drivers can compare online rates and find the best prices ...
(Date:4/19/2015)... (PRWEB) April 19, 2015 The American ... up with PROSHRED Security (“PROSHRED”) to host its second ... to shred their personal documents in order to raise ... prevention. , The June 6th event is being held ... – 2pm local time. The time will vary at ...
(Date:4/19/2015)... WI (PRWEB) April 19, 2015 HealthPostures, ... announces that it will exhibit it’s pioneering ergonomics ... Expo and the Iowa-Illinois Safety Council Professional Development Conference ... and the TaskMate EZ are used in volume by ... facilities. , Built to clamp to a desk, ...
(Date:4/18/2015)... Carinsurancesavings.biz has released a new blog ... cheaper during Spring. , Spring can be a ... should make sure they compare the newest policies before ... learn more about Spring car insurance offers by reading ... quotes are becoming more and more popular. Many insurance ...
(Date:4/18/2015)... Insuranceautoquote.info has released a new blog post ... . , Clients can review important auto insurance ... environment provides important advantages for clients who need affordable ... do not have coverage for their vehicles can purchase ... or hour. Many agencies offer important discounts and drivers ...
Breaking Medicine News(10 mins):Health News:An Online Guide About Claiming Auto Insurance Benefits After an Accident 2Health News:2015 Annual Nationwide "Shred Cancer" Shredding Event 2Health News:HealthPostures' TaskMate Products to be Exhibited at the Wisconsin and Iowa-Illinois Safety Conferences 2Health News:Auto Insurance Plans Are Cheaper During Spring! 2Health News:Clients Can Review Car Insurance Quotes Online To Find Low Cost Offers! 2
... patients on urinary catheters longer than necessary, increasing their ... a new study published in the Joint Commission Journal ... a simple reminder note put by the nursing staff ... showed that about 25 percent of hospital patients at ...
... key to extend the lifespan of many species through ... Boston and University of California, Davis, screened for genes ... to the study published today in the advance online ... gene do not live longer when subjected to calorie ...
... a new study says//. ,Phillip Marucha, and his ... a study of laboratory mice, found that psychological stress, ... by more than 45 percent, reports science portal eurekalert.org. ... accounted for the slow recovery, it said. ...
... the insects are itchy and swollen, rather than being tender//. ... tenderness may be a sign the bug bite is becoming ... possible infection are redness extending beyond the immediate bug bite, ... site over time. The monsoon is the insect season that ...
... neurodegenerative and ultimately fatal disease// that slowly destroys the ... the ability to take care of themselves and require ... ,Based on findings of a recent study researchers say ... help slow the progression of Alzheimer's disease by reducing ...
... sure so many harried parents have time and again thought ... there is a flood of TV channels, but how many ... that on our fingertips. ,Now, adding parents is a ... TV. Other than helping them for educational purposes, it harms ...
Cached Medicine News:Health News:Patients Are Given Catheter Longer Than Necessary 2Health News:Genes to Extend Longevity Discovered 2Health News:Stop Watching TV: Toddler Development Affected 2
(Date:4/17/2015)... Apr. 16, 2015 Research and Markets ... "Corporate Reputation of Pharma in 2014 - a ... report to their offering. This independent study, ... patient groups with an interest in diabetes on the ... the pharma industry as a whole) in 2014. The ...
(Date:4/17/2015)... , Apr. 16, 2015 Research and Markets ... the "Corporate Reputation of Pharma in 2014 - ... Edition" report to their offering. For ... opinions on the corporate reputation of the pharmaceutical industry ... health with the views of patient organisations representing all ...
(Date:4/17/2015)... -- TWi Pharmaceuticals, Inc. ("TWi", Stock Ticker:4180.TT) today announced ... , has obtained state sales licenses from all ... in close contact with the major nationwide retail pharmacy ... label specialty generic products sold through these nationwide pharmacy ... According to IMS Health, the U.S. pharma market ...
Breaking Medicine Technology:Perspective of Diabetes Patient Groups on the Corporate Reputation of Pharma in 2014: 130 patient groups with an interest in diabetes from 34 countries 2Perspective of Diabetes Patient Groups on the Corporate Reputation of Pharma in 2014: 130 patient groups with an interest in diabetes from 34 countries 3Perspective of Diabetes Patient Groups on the Corporate Reputation of Pharma in 2014: 130 patient groups with an interest in diabetes from 34 countries 4Perspective of Diabetes Patient Groups on the Corporate Reputation of Pharma in 2014: 130 patient groups with an interest in diabetes from 34 countries 5Corporate Reputation of Pharma in 2014 - The Perspective of Mental Health Patient Groups - 1st Edition 2Corporate Reputation of Pharma in 2014 - The Perspective of Mental Health Patient Groups - 1st Edition 3
... the leader in automated breast ultrasound, today announced ... update to the somo-v® Automated Breast Ultrasound (ABUS) ... ultrasound system designed specifically for high-volume breast screening.  ... the somo-v ABUS Platinum has been specifically designed ...
... 2011 Kahn Swick & Foti, LLC announces ... of Illinois Eastern Division approved the following announcement ... benefit purchasers of publicly-traded securities of Acura Pharmaceuticals, ... PERSONS AND ENTITIES WHO PURCHASED OR OTHERWISE ACQUIRED ...
Cached Medicine Technology:U-Systems Launches somo-v Platinum Automated Breast Ultrasound System at RSNA 2U-Systems Launches somo-v Platinum Automated Breast Ultrasound System at RSNA 3Kahn Swick & Foti, LLC Announces Class Action Settlement on Behalf of Purchasers of Publicly-Traded Securities of Acura Pharmaceuticals, Inc. -- ACUR 2Kahn Swick & Foti, LLC Announces Class Action Settlement on Behalf of Purchasers of Publicly-Traded Securities of Acura Pharmaceuticals, Inc. -- ACUR 3
... fully-automated, coagulation workstation capable of performing ... true random access fashion. The system's ... high throughput and rapid processing of ... interrupt current testing. All sample and ...
... is an ideal backup or STAT ... point detection means there are no ... are inserted into the specimen. Cross ... MLA 750 operates with either oxalate ...
The ACL 9000 together with an extensive test menu and superior technology is backed by high-quality service to keep the lab running efficiently....
... The Electra 1800C ... coagulation system that maximizes ... risks to the operator ... It is equipped with ...
Medicine Products: