Smart materials and structures have attracted a significant amount of attention for their
vibration control potential in engineering applications. Compared to the traditional active …

Radiation pattern control has generated much interest recently due to its potential
applications. Here we report the observation of high-efficiency dipole-like radiation of sound …

Deep back cavities are usually required for micro-perforated panel (MPP) constructions to
achieve good low frequency absorption. To overcome the problem, a close-box loudspeaker …

In this paper, a new hybrid passive-active sound absorption method is investigated, in which
porous materials and a loudspeaker are parallelly combined so that sound absorption over …

A single loudspeaker has weak sound absorption due to its excessive acoustic resistance
and abrupt acoustic reactance when used for large area noise control. In this paper, a SLPP …

With the effective couplings between the perforated plates and the shunt loudspeaker, a
hybrid absorber of shunt loudspeaker and perforated plates (HSLPP) with multiple …

Recent study shows that a suspended diaphragm may function as an efficient sound
absorbing device if a properly designed shunt electrical circuit is connected. The sound …

We present a fundamentally new approach to laboratory acoustic and seismic wave
experimentation that enables full immersion of a physical wave propagation experiment …

This paper proposes a structural-acoustic coupling model which is composed of an annular
segment thin plate with various elastic boundary constraints and an acoustic enclosure with …

To investigate the sound absorption of the absorber composed of a shunt loudspeaker (SL)
and porous materials (PM) in tandem, the normal absorption coefficients for six samples of …