Social survey on community response to aircraft noise in Ho Chi Minh City
Nguyen Thu Lan, Takashi Yano, Tsuyoshi Nishimura and Tetsumi Sato
A social survey on community response to aircraft noise was carried out around Tan Son Nhat Airport in Ho Chi Minh City in August and September 2008; this international airport is Vietnamfs largest, and had around 200 take-offs and landings. In total, 1562 respondents participated in the social survey; 880 respondents living in areas apart from main roads were interviewed with a questionnaire on aircraft noise, and 682 respondents living along a main road were interviewed with a questionnaire on the combined noise of aircraft and road traffic. Lden (Day-evening-night average sound level) values ranged from 53 to 71 dB for aircraft noise and 73 to 83 dB for combined noise. Dose-response curves for aircraft noise in Ho Chi Minh City were drawn and fitted to curves generated from European Union data. The energy difference model estimated the total annoyance (R2 = 0.49) better than the energy summation, independent effects, response summation, summation and inhibition, and annoyance equivalents models (R2 = 0.25? 0.48); these results are consistent with Taylorfs study. Although the dominant source model?which considers the total annoyance to be predicted by the dominant source annoyance?is not directly comparable with the former models based on physical parameters, its R2 was 0.82, suggesting the dominant source modelfs usefulness from a practical point of view.
Key words: Aircraft noise, noise model