Noise reduction performance of balconies on a building faade

Cheuk Yei Ho, Shiu Keung Tang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Noise from ground transportation is a big issue in the dense population area. This is a common situation that residential buildings and community facilities are developed close to busy roads with heavy traffic, which is because of the limited land available in urban area. Many noise mitigation devices are applied to reduce the noise level, such as noise barriers, balconies, ventilation windows etc. As a noise screening device, balconyon a building façade blocks the direct line of sight between the noise source and the façade. Since the balcony becomes more and more popular, details studies on its performance are needed. Scaledown model experiments are used to investigate the balcony noise reduction performance and which are carried out in the semi-Anechoic chamber, with a linear loudspeaker array act as the noise source, and the microphone array is located behind the balcony cavity. Different configurations of the experiments are carried out, including different balcony structures, noise elevation angles, azimuthal. The overall sound pressure level, sound distribution behind the balcony, broadband and one-Third octave band insertion loss are obtained and studied. The findings provide a more fundamental understanding of sound propagation into balconies and indicate that the ceiling reflections and the direct sound play important roles in the noise propagation. Therefore with carefully designed geometry of the balcony, strong noise attenuation and noise reduction can be attained.
Original languageEnglish
Title of host publicationINTER-NOISE 2017 - 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet
PublisherInstitute of Noise Control Engineering
Publication statusPublished - 1 Jan 2017
Event46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017 - Hong Kong Convention and Exhibition Centre (HKCEC), Hong Kong, Hong Kong
Duration: 27 Aug 201730 Aug 2017

Conference

Conference46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, INTER-NOISE 2017
Country/TerritoryHong Kong
CityHong Kong
Period27/08/1730/08/17

Keywords

  • Balcony
  • Insertion loss
  • Noise

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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