Aw8-2 is a hearing protection device. Aweighted.com is the associated web application. ATI created the entire system to help reduce occupational hearing loss - by providing industrial hygienists, audiologists, and safety managers with near real-time information about their clients' noise exposures. Instead of relying on coarse and infrequent area surveys, Aweighted.com users can monitor noise exposure directly. So, if an individual client is approaching their safe noise limit, a manager can know about it immediately and take action - before hearing damage occurs.
Noise induced hearing loss (NIHL) is a major problem in military and manufacturing sectors. High performance hearing protection devices (HPD's) are available but there are not reliable systems for detecting changes in noise level that occur between regularly scheduled noise surveys. There are few means for evaluating the adequacy of a person's hearing protection, or for detecting and enforcing compliance with hearing conservation directives. Hearing loss today is not as much about a lack of intervention options, but about a lack of actionable information. Aw8-2 + Aweighted.com changes all of that by providing timely relevant metrics.
Aw8-2 hearing protectors measure sound levels from inside and outside of the ear. So, Aweighted.com can also help to identify common problem scenarios such as when earplugs don't fit, or when someone isn't wearing their earplugs. Aw8-2 + Aweighted.com Noise Scenarios (PDF), link (2013-07-30)
The Aw8-2 is a new class of personal protection product: part hearing protector, part dosimeter, part Internet device. It is first to offer wireless, real-time noise exposure monitoring. It is only the second to offer in-ear microphones (after doseBusters USA) and it is first to combine in-ear and exterior measurements to verify that earplugs are being worn properly. Aw8-2's are innovative in other ways as well:
Aweighted.com is a web application based on the AWS cloud computing platform. It receives streams of instantaneous sound pressure level measurements, from client-worn Aw8-2 devices, and presents cumulative noise exposure results in a clear and actionable format. The interface is arranged to give safety managers immediate access to the hearing protection statuses of all of their personnel. By default, clients at highest risk are at the top of the list. Icons and bright colors further differentiate those individuals who are close to, or have exceeded, standards-defined exposure limits.
For more in-depth analyses, the charting feature shows time histories of each microphone signal. Users can zoom and pan with mouse gestures. They can compare in-ear and exterior sound levels for a single client, or between clients. There is also a reporting tool and an export function that makes it easy to get the raw data out, for custom processing.
Screen images from Aweighted.com, (2013-11-25)
Screen recording from Aweighted.com, (2013-11-25)
US 8,848,929 - Sound Exposure Monitoring System and Method for Operating the Same
US 20120321094 - Sound Exposure Monitoring System and Method for Operating the Same
A personal noise monitoring system and method for operating the same. Sound pressure data from inside the ears of a user of hearing protection device (HPD) are acquired from microphones in the HPD and reported to a master control unit. Simultaneously, the master control unit receives sound pressure data from the ambient environment in which the user is located. The data are reported to a central server for processing. The central server may use the data to determine in near real time or real time whether the user of the HPD is at risk for exposure to excess sound levels and to take remedial action while the user is still in the ambient environment.
The product system has been used by Navy installations ashore and afloat as well as onsite by a major defense contractor.
Lincoln Leads the Way in Hearing Conservation (PDF), link (2013-10-19)
Thursday, July 25, 2013
Broad Agency Announcement for Warfighter Developmental Protective Clothing and Devices
SYNOPSIS: The Naval Air Warfare Center awarded this contract to develop a Noise [Dosimeter] for Personnel Noise Exposure Assessments which include[s] DNC Microphone, Pilot ANR Earplug, ANR Impulse Control, and Noise Monitor to be researched. link (2013-11-17)