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This citation summarizes a one-page announcement of technology available for utilization. Speech intelligibilty has become a prominent factor in modern aircraft voice communication systems. A study by the U.S. Army Aviation Research and Development Command reviews the improvements in one modern Army aircraft voice communication system and in the test procedures updated to meet the new standards. One improvement in the new system is the bandwidth expanded from the standard 300- to 3,000-Hz range to 300- to 4,500-Hz range. The addition at the high-frequency end makes the consonants more intelligibile. More relaistic test procedures are speeled out to assess pink-noise attenuation at the ear-cups and microphone noise cancellation. The conventional test procedures have all but ignored the noisy environment in the aircraft cockpit....FOR ADDITIONAL INFORMATION: Detailed information about the technology described may be obtained by ordering the NTIS report, order number: AD-A119 427/NAA, price code: A02 or contact project officer Mitchell S. Mayer (201) 544-2302.