Much time is spent working out how to optimize the acoustics of large rooms, such as
auditoria, but the acoustics of small rooms and environments can be just as vital. The …

An adjoint-based approach for synthesizing complex sound sources by discrete, grid-based
monopoles in finite-difference time-domain simulations is presented. Previously, Stein …

Despite possessing an increased perceptual significance, near-field head-related transfer
functions (nf-HRTFs) are more difficult to acquire compared to far-field head-related transfer …

Direct field acoustic excitation testing, or DFAX, is gaining the attention of the space industry
as a reliable and flexible method to perform acoustic qualification tests of spacecrafts. The …

Simulations of acoustic wave propagation in time-domain are presented. In the simulations,
the discontinuous Galerkin method for spatial derivatives and the low-storage Runge–Kutta …

Ideally, loudspeaker cabinet walls are rigid and unmoving. However, real loudspeaker
cabinet walls vibrate due to both structural excitation from the drivers and acoustic excitation …

Dielectric elastomers are soft actuators that can reach deformations by more than 500%
when a high voltage is applied. They have been considered for use as loudspeakers …

The miniature loudspeaker is widely used in consumer electronic products. The unwanted
vibration of the enclosure wall of the loudspeaker could add to the overall acoustic output …

This work presents a methodology for developing two types of equipment for precision
agriculture applied in coffee handling and harvesting, based on acoustic techniques. The …