TY - GEN
T1 - Sound quality analysis of the combined aerodynamic and power transmission noise with application to rotorcraft interior response
AU - Sondkar, Pravin B.
AU - Lim, Teik C.
AU - Celmer, Robert D.
PY - 2008
Y1 - 2008
N2 - Acoustic signatures of aerodynamic and power transmission noise sources are very different. Special combination of sound quality metrics is needed to explain their combined effect. To study this problem more in-depth, the rotorcraft passenger cabin noise example is analyzed as it is dominated by both types of responses. The aim of this study is to identify which class of metrics is the best quality predictor for sound fields with combined aerodynamic and power transmission responses. To achieve this goal, a series of jury evaluation tests based on the paired comparison analysis are performed on a wide variety of rotorcraft interior sounds as stimuli. At the same time, various new and existing sound quality metrics were computed from the measured sound data. A multivariate regression analysis was applied to determine a suitable predictor model that correlates well with the normalized mean jury preference scores. The results, not only provided a better understanding of the controlling attributes in the combined aerodynamic and power transmission sound field, it can be used as a guide to identify the class of metrics that provides a reliable measure of subjective response.
AB - Acoustic signatures of aerodynamic and power transmission noise sources are very different. Special combination of sound quality metrics is needed to explain their combined effect. To study this problem more in-depth, the rotorcraft passenger cabin noise example is analyzed as it is dominated by both types of responses. The aim of this study is to identify which class of metrics is the best quality predictor for sound fields with combined aerodynamic and power transmission responses. To achieve this goal, a series of jury evaluation tests based on the paired comparison analysis are performed on a wide variety of rotorcraft interior sounds as stimuli. At the same time, various new and existing sound quality metrics were computed from the measured sound data. A multivariate regression analysis was applied to determine a suitable predictor model that correlates well with the normalized mean jury preference scores. The results, not only provided a better understanding of the controlling attributes in the combined aerodynamic and power transmission sound field, it can be used as a guide to identify the class of metrics that provides a reliable measure of subjective response.
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M3 - Conference contribution
AN - SCOPUS:84869986993
SN - 9781605605401
T3 - Institute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08
SP - 1528
EP - 1535
BT - Institute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08
T2 - 23rd National Conference on Noise Control Engineering, NOISE-CON 2008 and 3rd Sound Quality Symposium, SQS 2008
Y2 - 28 July 2008 through 31 July 2008
ER -