Relevant Milestone: Validate acoustic modeling and measurement of reverberant enclosures. (L4 AOS/PPSF Program, Q4, FY99). Shown: Validation of room acoustic modeling and measurement approach is accomplished by (1) evaluating goodness-of-fit between predicted and measured acoustical parameters; (2) evaluating the trade-off between acoustic rendering complexity & human performance. Accomplishments / Relation to Milestone and ETO: Additional accomplishments: completed Sound Laboratory, rev 1: flexible software-based prototype for dynamic, 3-D audio synthesis for psychoacoustical studies; completed initial perceptual validation studies of dynamic complex environments & impact of latency in dynamic simulations. These results & technologies enable development of engineering guidelines for auditory displays that prioritize and spatially segregate auditory information for improved situational awareness, intelligibility, and reduced workload. Guidelines are developed via acoustic modeling of environments in aviation contexts combined with psychoacoustic validation of the models. Future Plans: Calibration of flight deck acoustic model for aeronautical human factors evaluation. This enables optimization and design of auditory communications (e.g., alerts, radio communication speech intelligibility) under varying auditory display and background noise conditions in the laboratory. Eventually, the results can be implemented into future human factors engineering guidelines for aeronautic communications.
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