바닥충격음 및 배수음에 대한 인공음과 자연음의 마스킹효과 조사

다국어 초록 (Multilingual Abstract)

This study investigated the effect of artificial and natural sounds on the masking of residential noises through auditory experiments. Residential noises consisted of floor impact noise (children jumping) and toilet flushing noise. As masking sounds, white, pink, and brown noises were used for artificial sounds and waterfall, stream, wave, rain-fall, insect, and bird sounds were included as natural sounds. In the auditory experiment, thirty subjects rated their masking sound preferences and annoyance (7 point verbal scale) for residential noises and residential noises mixed with masking sounds with equal sound levels. In addition, the represented sound level of masking sounds was modified to –3 dB, 0 dB and +3 dB from the original sound level; the annoyance rating experiment was repeated for the residential noises mixed with masking sounds. Results showed that stream and wave sound had the greatest masking effects for both residential noises and that insect and bird sounds did not have any masking effects. A sound masking effect was also observed for masking sounds 3 dB lower and higher than residential noise. It was also found that components in the middle-frequency range of the masking sound are important for the masking of residential noises.

참고문헌 (Reference)

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