Outputs (58)

Dual cylinder inviscid vortex sound of low Mach number (2011)
Journal Article
Tang, S. K. (2011). Dual cylinder inviscid vortex sound of low Mach number. Journal of Fluids and Structures, 27(8), 1337-1348. https://doi.org/10.1016/j.jfluidstructs.2011.06.011

The unsteady motions of an inviscid vortex under the influence of a cylinder pair in the presence of a low Mach number mean flow and the corresponding sound generation are examined in the present study. The two cylinders are in close proximity. A sem... Read More about Dual cylinder inviscid vortex sound of low Mach number.

The characteristics of acoustic line array prototypes for scale model experiments (2011)
Journal Article
Piippo, K. E., & Tang, S. K. (2011). The characteristics of acoustic line array prototypes for scale model experiments. Applied acoustics. Acoustique appliqué. Angewandte Akustik, 72(11), 884-888. https://doi.org/10.1016/j.apacoust.2011.05.001

The sound fields created by three different settings of a 5 m long linear loudspeaker array were studied experimentally in the present investigation in an attempt to find out a method to produce a reasonable sound field for scaled down model experime... Read More about The characteristics of acoustic line array prototypes for scale model experiments.

Vortex sound in the presence of a low Mach number flow across a drum-like silencer (2011)
Journal Article
Tang, S. K. (2011). Vortex sound in the presence of a low Mach number flow across a drum-like silencer. The Journal of the Acoustical Society of America, 129(5), 2830-2840. https://doi.org/10.1121/1.3562567

The sound generated by a vortex propagating across a two-dimensional duct section with flexible walls (membranes) in an infinitely long rigid duct conveying a flow is investigated numerically using the matched asymptotic expansion technique and the p... Read More about Vortex sound in the presence of a low Mach number flow across a drum-like silencer.

Passive noise control by enhancing aeroacoustic interference due to structural discontinuities in close proximity (2011)
Journal Article
Leung, R. C., So, R. M., Tang, S. K., & Wang, X. Q. (2011). Passive noise control by enhancing aeroacoustic interference due to structural discontinuities in close proximity. Journal of Sound and Vibration, 330(14), 3316-3333. https://doi.org/10.1016/j.jsv.2011.02.011

In-duct devices are commonly installed in flow ducts for various flow management purposes. The structural construction of these devices indispensably creates disruption to smooth flow through duct passages so they exist as structural discontinuities... Read More about Passive noise control by enhancing aeroacoustic interference due to structural discontinuities in close proximity.

Beacon-aided adaptive localization of noise sources aboard a pass-by railcar using a trackside microphone array (2010)
Journal Article
Wu, Y. I., Lau, S. K., Wong, K. T., & Tang, S. K. (2010). Beacon-aided adaptive localization of noise sources aboard a pass-by railcar using a trackside microphone array. IEEE Transactions on Vehicular Technology, 59(8), 3720-3727. https://doi.org/10.1109/TVT.2010.2059056

A new adaptive "beamforming" signal-processing algorithm is developed to locate the loudest noise sources aboard a railcar that passes by a trackside immobile microphone array. This proposed microphone-array beamformer tracks the railcar's spatial mo... Read More about Beacon-aided adaptive localization of noise sources aboard a pass-by railcar using a trackside microphone array.

Can surrounding greenery reduce noise annoyance at home? (2010)
Journal Article
Li, H. N., Chau, C. K., & Tang, S. K. (2010). Can surrounding greenery reduce noise annoyance at home?. The Science of the total environment, 408(20), 4376-4384. https://doi.org/10.1016/j.scitotenv.2010.06.025

Annoyance has been identified as the most important psychological impact arisen from noise. Besides socioeconomic status, residing neighborhood characteristics such as greenery has been shown to be able to reduce noise annoyance. To study the effects... Read More about Can surrounding greenery reduce noise annoyance at home?.

Scale model study of balcony insertion losses on a building façade with non-parallel line sources (2010)
Journal Article
Tang, S. K. (2010). Scale model study of balcony insertion losses on a building façade with non-parallel line sources. Applied acoustics. Acoustique appliqué. Angewandte Akustik, 71(10), 947-954. https://doi.org/10.1016/j.apacoust.2010.06.006

The screening effect of balconies on a building faade in the case where the noise source is not parallel to the faade is studied using scale model experiment in the present study. Results show that the angle of source inclination to the faade has sub... Read More about Scale model study of balcony insertion losses on a building façade with non-parallel line sources.

On sound transmission loss across a Helmholtz resonator in a low Mach number flow duct (2010)
Journal Article
Tang, S. K. (2010). On sound transmission loss across a Helmholtz resonator in a low Mach number flow duct. The Journal of the Acoustical Society of America, 127(6), 3519-3525. https://doi.org/10.1121/1.3409481

A simplified physical model, which described the generation of sound by a Helmholtz resonator upon flow excitation at its neck, was developed in the present investigation to study the drop in sound power transmission loss across such a resonator moun... Read More about On sound transmission loss across a Helmholtz resonator in a low Mach number flow duct.