Shutting the window is usually the last resort in mitigating environmental noise, at the
expense of natural ventilation. We describe an active sound control system fitted onto the …

Active noise control (ANC) systems usually involve a large number of loudspeakers and
error microphones in order to achieve noise reduction over an extended region of space …

Featured Application An active control approach to mitigate low-frequency noise
propagating through an open top-hung window, while allowing natural ventilation. Abstract …

A virtual sound barrier is an active noise control system that uses arrays of loudspeakers
and microphones to create a useful size of quiet zone and can be used to reduce sound …

Theoretical, numerical, and experimental investigations are presented to predict and
suppress the noise radiated from monopole point sources inside an unbaffled long …

The sound radiation control of an unbaffled long enclosure using wavy micro-perforated
panel absorbers (WMPPAs) was numerically and experimentally investigated. First, a hybrid …

Previous work has demonstrated that sound radiation through a cavity opening can be
reduced with secondary sources at the edge of the opening, but the error microphones are …

This paper presents the theoretical and experimental investigations on the suppression of
noise radiation from a point source inside an open cavity with three-dimensional …

The floor-level slit between the door and the floor is one weak point in building noise
insulation. In this paper, an active noise control system is proposed to reduce the sound …

Active noise control (ANC) is a noise abatement technique that preserves an abode's natural
ventilation when applied on domestic windows. ANC systems for open windows mitigates …