Outputs (63)

Aeroacoustics of duct junction flows merging at different angles (2014)
Journal Article
Lam, G. C., Leung, R. C., & Tang, S. K. (2014). Aeroacoustics of duct junction flows merging at different angles. Journal of Sound and Vibration, 333(18), 4187-4202. https://doi.org/10.1016/j.jsv.2014.04.045

This paper reports an exploratory study of the aeroacoustics of a merging flow at a duct junction with the same width in all branches and different merging angles. The focus is put on the acoustic generation due to the flow unsteadiness. The study is... Read More about Aeroacoustics of duct junction flows merging at different angles.

Validation of CE/SE scheme in low mach number direct aeroacoustic simulation (2014)
Journal Article
Lam, G. C., Leung, R. C., Seid, K. H., & Tang, S. K. (2014). Validation of CE/SE scheme in low mach number direct aeroacoustic simulation. International Journal of Nonlinear Sciences and Numerical Simulation, 15(2), 157-169. https://doi.org/10.1515/ijnsns-2012-0118

The space-time conservation element and solution element (CE/SE) scheme has caught many attentionin aeroacoustic research community as an alternative numerical strategy for direct aeroacoustic simulation (DAS).As a result of its strict conversation o... Read More about Validation of CE/SE scheme in low mach number direct aeroacoustic simulation.

Neural network predictions of acoustical parameters in multi-purpose performance halls (2013)
Journal Article
Cheung, L. Y., & Tang, S. K. (2013). Neural network predictions of acoustical parameters in multi-purpose performance halls. The Journal of the Acoustical Society of America, 134(3), 2049-2065. https://doi.org/10.1121/1.4817880

A detailed binaural sound measurement was carried out in two multi-purpose performance halls of different seating capacities and designs in Hong Kong in the present study. The effectiveness of using neural network in the predictions of the acoustical... Read More about Neural network predictions of acoustical parameters in multi-purpose performance halls.

Plenum window insertion loss in the presence of a line source - A scale model study (2013)
Journal Article
Tong, Y. G., & Tang, S. K. (2013). Plenum window insertion loss in the presence of a line source - A scale model study. The Journal of the Acoustical Society of America, 133(3), 1458-1467. https://doi.org/10.1121/1.4788996

The acoustical insertion losses of plenum windows installed on a building facade in the presence of a non-parallel line source are studied by using a 1:4 scaled down model in a semi-anechoic chamber in the present investigation. Two types of insertio... Read More about Plenum window insertion loss in the presence of a line source - A scale model study.

Aeroacoustics of T-junction merging flow (2013)
Journal Article
Lam, G. C., Leung, R. C., & Tang, S. K. (2013). Aeroacoustics of T-junction merging flow. The Journal of the Acoustical Society of America, 133(2), 697-708. https://doi.org/10.1121/1.4773351

This paper reports a numerical study of the aeroacoustics of merging flow at T-junction. The primary focus is to elucidate the acoustic generation by the flow unsteadiness. The study is conducted by performing direct aeroacoustic simulation approach,... Read More about Aeroacoustics of T-junction merging flow.

Narrow sidebranch arrays for low frequency duct noise control (2012)
Journal Article
Tang, S. K. (2012). Narrow sidebranch arrays for low frequency duct noise control. The Journal of the Acoustical Society of America, 132(5), 3086-3097. https://doi.org/10.1121/1.4756951

The present study investigates the sound transmission loss across a section of an infinitely long duct where one or more narrow sidebranch tubes are installed flushed with the duct wall. The finite-element method is used to compute the wave propagati... Read More about Narrow sidebranch arrays for low frequency duct noise control.

A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception (2012)
Presentation / Conference Contribution
Wu, Y. I., Wong, K. T., Yuan, X., Lau, S. K., & Tang, S. K. A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception

Herein investigated are computationally simple microphone-array beamformers that are independent of the frequency-spectra of all signals, all interference, and all noises. These beamformers allow the listener to tune the desired azimuth-elevation "lo... Read More about A directionally tunable but frequency-invariant beamformer on an acoustic velocity-sensor triad to enhance speech perception.

Experimental investigation of the sound absorption performance of compartmented Helmholtz resonators (2012)
Journal Article
Tang, S. K., Ng, C. H., & Lam, E. Y. (2012). Experimental investigation of the sound absorption performance of compartmented Helmholtz resonators. Applied acoustics. Acoustique appliqué. Angewandte Akustik, 73(9), 969-976. https://doi.org/10.1016/j.apacoust.2012.03.016

An experiment was derived in the present study to investigate the effects of coupling up two Helmholtz resonators on their overall sound absorption performance. The effect of compartmenting the cavity of a resonator on its sound absorption property w... Read More about Experimental investigation of the sound absorption performance of compartmented Helmholtz resonators.

Perception of urban park soundscape (2012)
Journal Article
Tse, M. S., Chau, C. K., Choy, Y. S., Tsui, W. K., Chan, C. N., & Tang, S. K. (2012). Perception of urban park soundscape. The Journal of the Acoustical Society of America, 131(4), 2762-2771. https://doi.org/10.1121/1.3693644

A number of studies have been initiated to explore how to improve the soundscape quality in urban parks. However, good soundscape quality in parks cannot be provided without a thorough understanding of the complex relationships among sound, environme... Read More about Perception of urban park soundscape.

On the study of the effects of sea views, greenery views and personal characteristics on noise annoyance perception at homes (2012)
Journal Article
Nang Li, H., Kwan Chau, C., Sze Tse, M., & Tang, S. K. (2012). On the study of the effects of sea views, greenery views and personal characteristics on noise annoyance perception at homes. The Journal of the Acoustical Society of America, 131(3), 2131-2140. https://doi.org/10.1121/1.3681936

Noise annoyance has caused significant adverse impacts on human beings and numerous efforts have been spent on mitigating annoyance problems. Natural greenery has been shown to be able to moderate annoyance problems at home but this conclusion was dr... Read More about On the study of the effects of sea views, greenery views and personal characteristics on noise annoyance perception at homes.