AN APPARATUS FOR REDISTRIBUTING ACOUSTIC ENERGY

摘要

An apparatus for re-distributing acoustic energy. The apparatus comprises a first concave surface defined as a surface of revolution of a line or curve. This curve of revolution is rotated beyond 230 degrees and thus defines a rather small opening, which has advantages in the frequency response output. Additionally or alternatively, edges of the concave surface may be rounded to provide advantageous effects in the sound output.

主权项

1. An apparatus for redistributing acoustic energy, the apparatus comprising a surface with:
a first part having a shape of a first surface of revolution, within a first angular interval from a first angular position to a second angular position and around an axis, of a first line extending through a point, P, on the axis, a second part having a shape of a second surface of revolution, within a second angular interval from a fifth angular position to a sixth angular position and around the axis, of a second line extending through the point P, the first part being defined at longitudinal positions, along the axis, on one side of the point P and the second part being defined at longitudinal positions on an opposite side of the point P, a back surface extending, within a third angular interval from a third angular position to a fourth angular position and around the axis, the back surface being positioned further away from the axis than the first part, wherein the first angular interval exceeds 230°.