Bennett Christopher L, Dudaryk Roman, Ayers Andrew L, McNeer Richard R
Music Engineering Technology, Frost School of Music, University of Miami, Founder's Hall Room 140, 1550 Brescia Avenue, Coral Gables, Florida 33146, USA.
Anesthesiology, Miller School of Medicine, University of Miami, 239 Ryder Trauma Center, Jackson Memorial Hospital, 1611 NW 12th Avenue, Miami, Florida 33136, USA.
J Acoust Soc Am. 2015 Dec;138(6):3855-63. doi: 10.1121/1.4936947.
In this study, an operating room simulation environment was adapted to include quadraphonic speakers, which were used to recreate a composed clinical soundscape. To assess validity of the composed soundscape, several acoustic parameters of this simulated environment were acquired in the presence of alarms only, background noise only, or both. These parameters were also measured for comparison from size-matched operating rooms at Jackson Memorial Hospital. The parameters examined included sound level, reverberation time, and predictive metrics of speech intelligibility in quiet and noise. It was found that the sound levels and acoustic parameters were comparable between the simulated environment and the actual operating rooms. The impact of the background noise on the perception of medical alarms was then examined, and was found to have little impact on the audibility of the alarms. This study is a first in kind report of a comparison between the environmental and psychological acoustical parameters of a hospital simulation environment and actual operating rooms.
在本研究中，对手术室模拟环境进行了调整，使其包含四声道扬声器，用于重现合成的临床声景。为评估合成声景的有效性，在仅存在警报声、仅存在背景噪声或两者同时存在的情况下，获取了该模拟环境的几个声学参数。还从杰克逊纪念医院大小匹配的手术室中测量了这些参数以作比较。所检查的参数包括声级、混响时间以及安静和噪声环境下语音可懂度的预测指标。研究发现，模拟环境与实际手术室之间的声级和声学参数具有可比性。随后研究了背景噪声对医疗警报感知的影响，发现其对警报的可听度影响很小。本研究首次报告了医院模拟环境与实际手术室的环境和心理声学参数之间的比较情况。
