Assessment criterion for indoor noise disturbance in the presence of low frequency sources

作者：Caniato M^*; Bettarello F; Schmid C; Fausti P

来源：APPLIED ACOUSTICS, 2016, 113: 22-33.

DOI：10.1016/j.apacoust.2016.06.001

• Noise disturbance
• Objective assessment method
• Mid-low frequency
• Inner comfort
• Measurement evaluation
• Noise assessment guidelines

Several studies have presented the effects of environmental noise in and around buildings and communities in which people live and work. In particular, the noise introduced into a building is mostly evaluated using the A weighted sound pressure level (L-Aeq) as the only parameter to determine the perceived disturbance. Nevertheless, if noise is produced by activities or sources characterised by a low frequency contribution, the measurement of L-Aeq underestimates the real disturbance, in particular during sleeping time.
The international literature suggests methods to evaluate the low-frequency noise contribution to annoyance separately from the A weighted sound pressure level; almost all of the proposed methods are based on exceeding a threshold limit.
This paper tests international criteria, by applying them in real-life indoor noise situations, and then analysing, comparing and contrasting results.
Based on the result of the procedure above, a new criterion consisting of a single threshold is proposed, which simplifies the procedures in case of low-frequency components, but could be used for any situation.

• 出版日期2016-12