The Effects on Computer Recognition of Speech When Speaking through Protective Masks
ARMY MATERIEL COMMAND ABERDEEN PROVING GROUND MD HUMAN ENGINEERING LAB
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The purpose of this experiment was to investigate the effects on computer recognition of speech when speaking through aviator protective masks as compared to the standard boom-mounted microphone. Twelve Army aviators were tested with a 50-word vocabulary under three conditions no mask boom-mounted microphone, M24 aviator protective mask which has an internally mounted microphone, and the XM33 developmental aviator protective mask which has an externally mounted microphone. The conclusions were 1 of the two masks designs, the M24 mask with the internally mounted microphone provided better results with the speech recognition system and 2 although there was no significant difference in performance between the boom-mounted microphone and the protective masks, there was an indication of inconsistent performance obtained with the boom-mounted microphone which was not clearly understood and warrants further investigation.
- Human Factors Engineering and Man Machine Systems
- Voice Communications