METHOD OF CREATING A SOUND FIELD

摘要

A method of creating a sound field which allows two users in the same room to listen to different programmes. A sound beam representing a first sound signal is beamed to a first listener and a sound beam representing the inverse of that signal is beamed to a location the other side of the second listener. The symmetry of the sound b earns about the second listener causes the sound field to be very quiet at the second listener's position. Thus, the first; listener can listen to an audio programme while the second listener hears nothing even though be may only be a metre or so away from the first listener. Linear superposition means that a different audio programme can be beamed to the second listener and a quiet spot in respect of this different audio programme can be provided at the position of the first listener. This allows two people in the same room to listen to different audio programmes, with no, or very little, interference between the programmes, even at low frequencies.