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001 ocn318683906;

003 OCoLC;

005 20141212065504.0;

006 m d f ;

007 cr cn|||||||||;

008 090122s2008 mdua ob f000 0 eng d;

029 0 a| DTICEb| ADA478385;

035 a| (Sirsi) o318683906;

049 a| ERE#;

074 a| 0324-A-01 (online);

086 0 a| D 101.133:4383;

100 1 a| Henry, Paula Patricia.=| ^A1035520;

245 10 a| Comparison of acoustic properties of two USMC helmets /c| Paula Henry, Jim A. Faughn, Timothy J. Mermagen.;

260 a| Aberdeen Proving Ground, MD :b| Army Research Laboratory,c| [2008];

300 a| 1 online resource (iv, 20 pages) :b| illustrations (some color).;

336 a| text2| rdacontent;

337 a| computer2| rdamedia;

338 a| online resource2| rdacarrier;

490 1 a| ARL TR ;v| 4383;

500 a| Title from title screen (viewed June 8, 2011).;

500 a| "February 2008.";

504 a| Includes bibliographical references (p. 14-15).;

500 a| Final rept.;

506 a| APPROVED FOR PUBLIC RELEASE.;

520 a| The United States Marine Corps (USMC) has recently replaced an older Combat Vehicle Crewman (CVC) communications headset (the MK1697/G) with a newer version (Enhanced CVC headset [ECVCH]) manufactured by the same company (Sonetronics). A communications headset consists of two earphones and a microphone with the capability to receive and transmit communications across a radio or intercom. The ECVCH headset provides improvements in situational awareness through the addition of a talk-through microphone, in hearing protection through thicker ear pads, and in greater field ruggedness. A set of evaluations was conducted to determine if the ECVCH showed improvements in attenuation and speech intelligibility over the MK1697/G headset. There was no improvement in sound attenuation with the ECVCH. The ECVCH showed a decrement in speech intelligibility, although this decrement was not large enough to impact operational performance. The difference in performance can be explained by the differences in frequency responses between the two headsets.;

610 10 a| United States.b| Marine Corpsx| Equipment and supplies.=| ^A40465;

650 0 a| Communications, Militaryx| Equipment and supplies.=| ^A628243;

650 0 a| Helmets.=| ^A152660;

650 0 a| Headphones.=| ^A696243;

650 17 a| Voice communications.2| scgdst;

650 27 a| Protective equipment.2| scgdst;

650 17 a| Communication equipment.2| dtict;

650 17 a| Acoustic attenuation.2| dtict;

650 17 a| Intelligibility.2| dtict;

650 17 a| Helmets.2| dtict;

650 17 a| Ear protectors.2| dtict;

650 27 a| Test and evaluation.2| scgdst;

650 27 a| Ruggedized equipment.2| scgdst;

650 27 a| Earphones.2| scgdst;

650 27 a| Acoustic properties.2| scgdst;

650 27 a| Frequency response.2| scgdst;

650 27 a| Microphones.2| scgdst;

650 27 a| Intercommunication systems.2| scgdst;

650 27 a| Marine corps equipment.2| scgdst;

653 2 a| SPEECH INTELLIGIBILITY;

653 2 a| ECVCH(ENHANCED COMBAT VEHICLE CREWMAN HELMETS);

653 2 a| COMMUNICATION HEADSETS;

653 2 a| HEARING PROTECTION;

653 2 a| SOUND ATTENUATION;

700 1 a| Faughn, Jim A.=| ^A1043372;

700 1 a| Mermagen, Timothy J.=| ^A1043373;

710 2 a| U.S. Army Research Laboratory.=| ^A367731;

830 0 a| ARL/TR ;v| 4383.=| ^A567324;

856 40 u| http://purl.fdlp.gov/GPO/gpo8295;

856 40 u| http://handle.dtic.mil/100.2/ADA478385;

949 a| Click on web addressw| ASISh| JOYNER94;

596 a| 1;

998 a| 2507813;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 2507813-1001l| JNETm| JOYNERr| Ys| Yt| JNE1DOu| 7/7/2011x| EDOCUMENTz| JERESOURCE;

Comparison of acoustic properties of two USMC helmets / Paula Henry, Jim A. Faughn, Timothy J. Mermagen.

Author/creator	Henry, Paula Patricia
Other author	Faughn, Jim A.
Other author	Mermagen, Timothy J.
Other author	U.S. Army Research Laboratory.
Format	Electronic
Publication Info	Aberdeen Proving Ground, MD : Army Research Laboratory, [2008]
Description	1 online resource (iv, 20 pages) : illustrations (some color).
Supplemental Content	http://purl.fdlp.gov/GPO/gpo8295
Supplemental Content	http://handle.dtic.mil/100.2/ADA478385
Subjects	United States. Marine Corps--Equipment and supplies. Communications, Military--Equipment and supplies. Helmets. Headphones.

Series	ARL TR ; 4383 ARL/TR ; 4383. ^A567324
Abstract	The United States Marine Corps (USMC) has recently replaced an older Combat Vehicle Crewman (CVC) communications headset (the MK1697/G) with a newer version (Enhanced CVC headset [ECVCH]) manufactured by the same company (Sonetronics). A communications headset consists of two earphones and a microphone with the capability to receive and transmit communications across a radio or intercom. The ECVCH headset provides improvements in situational awareness through the addition of a talk-through microphone, in hearing protection through thicker ear pads, and in greater field ruggedness. A set of evaluations was conducted to determine if the ECVCH showed improvements in attenuation and speech intelligibility over the MK1697/G headset. There was no improvement in sound attenuation with the ECVCH. The ECVCH showed a decrement in speech intelligibility, although this decrement was not large enough to impact operational performance. The difference in performance can be explained by the differences in frequency responses between the two headsets.
General note	Title from title screen (viewed June 8, 2011).
General note	"February 2008."
General note	Final rept.
Bibliography note	Includes bibliographical references (p. 14-15).
Access restriction	APPROVED FOR PUBLIC RELEASE.
GPO item number	0324-A-01 (online)
Govt. docs number	D 101.133:4383

Availability

Library	Location	Call Number	Status	Item Actions
	Electronic Resources	Online Content http://purl.fdlp.gov/GPO/gpo8295 http://handle.dtic.mil/100.2/ADA478385	✔ Available

Comparison of acoustic properties of two USMC helmets / Paula Henry, Jim A. Faughn, Timothy J. Mermagen.

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