Barriers are increasingly used to protect the pedestrian and neighboring buildings from
construction noise activities. This study aims to investigate the suitability of applying active …

Three multimicrophone probe arrangements used to measure acoustic intensity are the four-
microphone regular tetrahedral, the four-microphone orthogonal, and the six-microphone …

One design for three-dimensional multimicrophone probes is the four-microphone
orthogonal design consisting of one microphone at an origin position with the other three …

In this paper, a modified cost function is proposed in order to achieve the maximum noise
attenuation using a set of secondary sources for a harmonically excited sound field. The …

Recent experiments in active noise control (ANC) have used near-field error sensors whose
locations are determined according to the minimization of sound power. Sensors should be …

Noise reduction performance of a compact active sound radiation control system is
significantly affected by locations of the error microphones which are required to be installed …

The placement of secondary sources and error microphones is an important factor that
determines the noise reduction performance of an ANC (active noise control) system. This …

The performance of an active control system in global control of enclosed sound fields
depends largely on the localization of the error sensors, among other factors. In this paper a …

Small axial and centrifugal cooling fans are routinely used with information technology (IT)
equipment to provide cooling. However, these fans also generate acoustic noise which can …

This paper presents a sensitivity analysis to error microphone placement and extraneous
noise sources for two control source configurations used for the active control of noise …