This open access book provides a concise explanation of the fundamentals and background
of the surround sound recording and playback technology Ambisonics. It equips readers …

The quote from Pierre Boulez, given as an epigraph to this article, inspired French
researchers to start developing technology for spherical loudspeaker arrays in the 1990s …

In this paper, we present evidence of directional wave behavior, ie, beaming and diffraction,
along high-order rotational symmetries of quasicrystalline elastic metamaterial plates. These …

The auditory impression of sound sources is strongly influenced by the room, which, eg,
determines the apparent source width. What is more, typical sources are not omnidirectional …

Compact spherical loudspeaker arrays can be used to provide control over their directivity
pattern. Usually, this is made by adjusting the gains of preprogrammed spatial filters …

Over the past decade, compact spherical loudspeaker arrays have emerged as directivity
controlled electroacoustic sources. The usual approach to control such a device is to provide …

The construction and test of a novel compact spherical source equipped with 32 individually
driven 2" loudspeakers is presented. The new sound source is designed for making room …

Abstract Sensing and controlling Acoustic Radiation Modes (ARMs) in the near-field of
vibrating structures is of great interest for broadband noise reduction or enhancement, as …

This study investigates methods for modeling surface velocity on a vibrating spherical cap,
offering valuable insights for loudspeaker design. While various methods exist, the spherical …

Omnidirectional sound sources are widely used in room acoustics. These devices are made
up of loudspeakers mounted on a spherical or polyhedral cabinet, where the dodecahedral …