The implementation of personal audio systems in enclosed spaces, such as a car cabin,
suffers from severe echoes from surrounding boundaries. In order to focus sound energy on …

A private audio system is investigated. This system allows a user to enjoy two-channel
sound in privacy without headphones. Most commercial audio sounds provide two-channel …

Parametric array applications in air, such as highly directional parametric loudspeaker
systems, usually rely on large radiators to generate the high-intensity primary beams …

An ultrasonic radiator is developed to generate a difference frequency sound from two
frequencies of ultrasound in air with a parametric array. A design method is proposed for an …

The control of the spatial distribution of noise and sound has been widely investigated for
achieving passive and active noise control. By extending the concepts of active noise control …

Personal sound zones have been utilized for delivering different audio programs depending
on listeners' position in space. Recently, its applications for cars and moving vehicles have …

Sound focused personal audio system is defined as the system that can make a user enjoy
the sound without bothering userpsilas neighbors. To implement this system, it is needed to …

Abstract 3D sound manipulation is to control a sound field for generating a desired sound
field or a desired impression at a position or region that we want. The sound manipulation …

Acoustical isolation in a shared space, eg, a living room, could be naturally achieved if the
users are located in different rooms or use headphones at the cost of limited social …

In this paper, a multichannel sound reproduction system based on transfer function
interpolation is developed. The system creates a directional sound field by weighting signals …