skip to content
Passive Hearing Protection Systems and Their Performance. Preview this item
ClosePreview this item
Checking...

Passive Hearing Protection Systems and Their Performance.

Author: Air force research lab wright-patterson afb oh.; Richard McKinley; Valerie Bjorn
Publisher: [United States] : Air force research lab wright-patterson afb oh, 2005.
Series: AD-a444 677.
Edition/Format:   Print book : National government publication : EnglishView all editions and formats
Summary:
While ideally noise should be reduced at the source, in the military environment the most effective solution in terms of both cost and operational effectiveness has been to provide personnel with personal hearing protection. This protection may be in the form of either an earplug that occludes the ear canal or a circumaural protector that inserts a barrier between the ambient noise and the ear. For both devices the  Read more...
Rating:

(not yet rated) 0 with reviews - Be the first.

Subjects
More like this

Find a copy in the library

&AllPage.SpinnerRetrieving; Finding libraries that hold this item...

Details

Material Type: Government publication, National government publication
Document Type: Book
All Authors / Contributors: Air force research lab wright-patterson afb oh.; Richard McKinley; Valerie Bjorn
OCLC Number: 1050612884
Notes: See also ADM001794, Personal Hearing Protection including Active Noise Reduction (Les dispositifs de protection de l'ouie, y compris l'att nuation du bruit actif). Paper presented at the RTO HFM Lecture Series on Personal Hearing Protection including Active Noise Reduction, held in Warsaw, Poland, 25-26 October 2004; Belgium, Brussels, 28-29 October 2004; Virginia Beach, VA, USA, 9-10 November 2004, and published in RTO-EN-HFM-111. The original document contains color images.
Description: 15 pages.
Series Title: AD-a444 677.

Abstract:

While ideally noise should be reduced at the source, in the military environment the most effective solution in terms of both cost and operational effectiveness has been to provide personnel with personal hearing protection. This protection may be in the form of either an earplug that occludes the ear canal or a circumaural protector that inserts a barrier between the ambient noise and the ear. For both devices the level of passive protection provided changes with frequency. A great deal of research was conducted in the 1940/50s to define the mechanisms and parameters that appeared to limit the performance of these types of protectors and this presentation will provide an overview of the findings of this early research. By the 1970s the performance of such devices, particularly those used in military applications, had been best optimized for use with the types of cranial protection being worn by soldiers, sailors, and aircrew. Since that time the major thrust in hearing protection enhancement has been the development and integration of Active Noise Reduction (ANR) systems where an electronic circuit is incorporated into the device to provide additional active attenuation in addition to the passive attenuation. ANR has provided significant benefits in low frequency attenuation and provides complementary performance to the passive device. However, for future military noise environments ANR headsets and ANR earplugs will not individually provide sufficient levels of protection, and passive earplugs and earmuffs may have to be used in some combination to provide adequate hearing protection. Recent research developments have resulted in improved passive earplug and earmuff attenuation performance. Deep inserted custom earplug performance and custom earmuff/earcushion design techniques have provided a substantial increase in hearing protection. Issues associated with the fitting of personal hearing protection and their performance in the field will also be discussed.

Reviews

User-contributed reviews
Retrieving GoodReads reviews...
Retrieving DOGObooks reviews...

Tags

Be the first.
Confirm this request

You may have already requested this item. Please select Ok if you would like to proceed with this request anyway.

Linked Data


\n\n

Primary Entity<\/h3>\n
<http:\/\/www.worldcat.org\/oclc\/1050612884<\/a>> # Passive Hearing Protection Systems and Their Performance.<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Book<\/a>, schema:CreativeWork<\/a> ;\u00A0\u00A0\u00A0\nlibrary:oclcnum<\/a> \"1050612884<\/span>\" ;\u00A0\u00A0\u00A0\nlibrary:placeOfPublication<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Place\/united_states<\/a>> ; # United States<\/span>\n\u00A0\u00A0\u00A0\nlibrary:placeOfPublication<\/a> <http:\/\/id.loc.gov\/vocabulary\/countries\/xxu<\/a>> ;\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/anr_active_noise_reduction<\/a>> ; # anr(active noise reduction)<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/earphones<\/a>> ; # earphones<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/hearing<\/a>> ; # hearing<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/ear_protectors<\/a>> ; # ear protectors<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/passive_systems<\/a>> ; # passive systems<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/operational_effectiveness<\/a>> ; # operational effectiveness<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/nato_furnished<\/a>> ; # nato furnished<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/army_personnel<\/a>> ; # army personnel<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/ambient_noise<\/a>> ; # ambient noise<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/attenuation<\/a>> ; # attenuation<\/span>\n\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/noise_reduction<\/a>> ; # noise reduction<\/span>\n\u00A0\u00A0\u00A0\nschema:bookFormat<\/a> bgn:PrintBook<\/a> ;\u00A0\u00A0\u00A0\nschema:contributor<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Person\/bjorn_valerie<\/a>> ; # Valerie Bjorn<\/span>\n\u00A0\u00A0\u00A0\nschema:contributor<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Person\/mckinley_richard<\/a>> ; # Richard McKinley<\/span>\n\u00A0\u00A0\u00A0\nschema:contributor<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Agent\/air_force_research_lab_wright_patterson_afb_oh<\/a>> ; # Air force research lab wright-patterson afb oh.<\/span>\n\u00A0\u00A0\u00A0\nschema:datePublished<\/a> \"2005<\/span>\" ;\u00A0\u00A0\u00A0\nschema:description<\/a> \"While ideally noise should be reduced at the source, in the military environment the most effective solution in terms of both cost and operational effectiveness has been to provide personnel with personal hearing protection. This protection may be in the form of either an earplug that occludes the ear canal or a circumaural protector that inserts a barrier between the ambient noise and the ear. For both devices the level of passive protection provided changes with frequency. A great deal of research was conducted in the 1940\/50s to define the mechanisms and parameters that appeared to limit the performance of these types of protectors and this presentation will provide an overview of the findings of this early research. By the 1970s the performance of such devices, particularly those used in military applications, had been best optimized for use with the types of cranial protection being worn by soldiers, sailors, and aircrew. Since that time the major thrust in hearing protection enhancement has been the development and integration of Active Noise Reduction (ANR) systems where an electronic circuit is incorporated into the device to provide additional active attenuation in addition to the passive attenuation. ANR has provided significant benefits in low frequency attenuation and provides complementary performance to the passive device. However, for future military noise environments ANR headsets and ANR earplugs will not individually provide sufficient levels of protection, and passive earplugs and earmuffs may have to be used in some combination to provide adequate hearing protection. Recent research developments have resulted in improved passive earplug and earmuff attenuation performance. Deep inserted custom earplug performance and custom earmuff\/earcushion design techniques have provided a substantial increase in hearing protection. Issues associated with the fitting of personal hearing protection and their performance in the field will also be discussed.<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\nschema:exampleOfWork<\/a> <http:\/\/worldcat.org\/entity\/work\/id\/60629163<\/a>> ;\u00A0\u00A0\u00A0\nschema:genre<\/a> \"Government publication<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\nschema:genre<\/a> \"National government publication<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\nschema:inLanguage<\/a> \"en<\/span>\" ;\u00A0\u00A0\u00A0\nschema:isPartOf<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Series\/ad_a444_677<\/a>> ; # AD-a444 677.<\/span>\n\u00A0\u00A0\u00A0\nschema:name<\/a> \"Passive Hearing Protection Systems and Their Performance.<\/span>\"@en<\/a> ;\u00A0\u00A0\u00A0\nschema:productID<\/a> \"1050612884<\/span>\" ;\u00A0\u00A0\u00A0\nschema:publication<\/a> <http:\/\/www.worldcat.org\/title\/-\/oclc\/1050612884#PublicationEvent\/united_states_air_force_research_lab_wright_patterson_afb_oh_2005<\/a>> ;\u00A0\u00A0\u00A0\nschema:publisher<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Agent\/air_force_research_lab_wright_patterson_afb_oh<\/a>> ; # Air force research lab wright-patterson afb oh.<\/span>\n\u00A0\u00A0\u00A0\nwdrs:describedby<\/a> <http:\/\/www.worldcat.org\/title\/-\/oclc\/1050612884<\/a>> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n\n

Related Entities<\/h3>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Agent\/air_force_research_lab_wright_patterson_afb_oh<\/a>> # Air force research lab wright-patterson afb oh.<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nbgn:Agent<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"Air force research lab wright-patterson afb oh.<\/span>\" ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"Air force research lab wright-patterson afb oh<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Person\/bjorn_valerie<\/a>> # Valerie Bjorn<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Person<\/a> ;\u00A0\u00A0\u00A0\nschema:familyName<\/a> \"Bjorn<\/span>\" ;\u00A0\u00A0\u00A0\nschema:givenName<\/a> \"Valerie<\/span>\" ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"Valerie Bjorn<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Person\/mckinley_richard<\/a>> # Richard McKinley<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Person<\/a> ;\u00A0\u00A0\u00A0\nschema:familyName<\/a> \"McKinley<\/span>\" ;\u00A0\u00A0\u00A0\nschema:givenName<\/a> \"Richard<\/span>\" ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"Richard McKinley<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Place\/united_states<\/a>> # United States<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Place<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"United States<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Series\/ad_a444_677<\/a>> # AD-a444 677.<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nbgn:PublicationSeries<\/a> ;\u00A0\u00A0\u00A0\nschema:hasPart<\/a> <http:\/\/www.worldcat.org\/oclc\/1050612884<\/a>> ; # Passive Hearing Protection Systems and Their Performance.<\/span>\n\u00A0\u00A0\u00A0\nschema:name<\/a> \"AD-a444 677.<\/span>\" ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"AD-a444 677<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/ambient_noise<\/a>> # ambient noise<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Thing<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"ambient noise<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/anr_active_noise_reduction<\/a>> # anr(active noise reduction)<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Thing<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"anr(active noise reduction)<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/army_personnel<\/a>> # army personnel<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Thing<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"army personnel<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/attenuation<\/a>> # attenuation<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Thing<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"attenuation<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/ear_protectors<\/a>> # ear protectors<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Thing<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"ear protectors<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/earphones<\/a>> # earphones<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Thing<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"earphones<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/hearing<\/a>> # hearing<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Thing<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"hearing<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/nato_furnished<\/a>> # nato furnished<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Thing<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"nato furnished<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/noise_reduction<\/a>> # noise reduction<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Thing<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"noise reduction<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/operational_effectiveness<\/a>> # operational effectiveness<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Thing<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"operational effectiveness<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Thing\/passive_systems<\/a>> # passive systems<\/span>\n\u00A0\u00A0\u00A0\u00A0a \nschema:Thing<\/a> ;\u00A0\u00A0\u00A0\nschema:name<\/a> \"passive systems<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/id.loc.gov\/vocabulary\/countries\/xxu<\/a>>\u00A0\u00A0\u00A0\u00A0a \nschema:Place<\/a> ;\u00A0\u00A0\u00A0\ndcterms:identifier<\/a> \"xxu<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/www.worldcat.org\/title\/-\/oclc\/1050612884<\/a>>\u00A0\u00A0\u00A0\u00A0a \ngenont:InformationResource<\/a>, genont:ContentTypeGenericResource<\/a> ;\u00A0\u00A0\u00A0\nschema:about<\/a> <http:\/\/www.worldcat.org\/oclc\/1050612884<\/a>> ; # Passive Hearing Protection Systems and Their Performance.<\/span>\n\u00A0\u00A0\u00A0\nschema:dateModified<\/a> \"2019-01-01<\/span>\" ;\u00A0\u00A0\u00A0\nvoid:inDataset<\/a> <http:\/\/purl.oclc.org\/dataset\/WorldCat<\/a>> ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n
<http:\/\/www.worldcat.org\/title\/-\/oclc\/1050612884#PublicationEvent\/united_states_air_force_research_lab_wright_patterson_afb_oh_2005<\/a>>\u00A0\u00A0\u00A0\u00A0a \nschema:PublicationEvent<\/a> ;\u00A0\u00A0\u00A0\nschema:location<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Place\/united_states<\/a>> ; # United States<\/span>\n\u00A0\u00A0\u00A0\nschema:organizer<\/a> <http:\/\/experiment.worldcat.org\/entity\/work\/data\/60629163#Agent\/air_force_research_lab_wright_patterson_afb_oh<\/a>> ; # Air force research lab wright-patterson afb oh.<\/span>\n\u00A0\u00A0\u00A0\nschema:startDate<\/a> \"2005<\/span>\" ;\u00A0\u00A0\u00A0\u00A0.\n\n\n<\/div>\n\n

Content-negotiable representations<\/p>\n