US 2019/0200132 A1 · VARIABLE ACOUSTICS LOUDSPEAKER

Abstract

A first array of speaker elements is disposed in a cylindrical configuration about an axis and configured to play back audio at a first range of frequencies. A second array of speaker elements is disposed in a cylindrical configuration about the axis and configured to play back audio at a second range of frequencies. A digital signal processor generates a first plurality of output channels from an input channel for the first frequencies, applies the output channels to the first array of speaker elements using a first rotation matrix to generate a first beam of audio content at a target angle about the axis, generates a second plurality of output channels from the input channel for the second frequencies, and applies the second output channels to the second array of speaker elements using a second rotation matrix to generate a second beam of audio content at the target angle.

Claims18

Dependent claims

A system comprising:

a first array of M speaker elements disposed in a cylindrical configuration about an axis and configured to play back audio at a first range of frequencies;
a second array of N speaker elements disposed in a cylindrical configuration about the axis and configured to play back audio at a second range of frequencies;
and
a digital signal processor, programmed to
generate a first plurality of output channels from an input channel for the first range of frequencies,
apply the first plurality of output channels to the first array of speaker elements using a first rotation matrix to generate a first beam of audio content at a target angle about the axis,
generate a second plurality of output channels from the input channel for the second range of frequencies, and
apply the second plurality of output channels to the second array of speaker elements using a second rotation matrix to generate a second beam of audio content at the target angle about the axis.

5 more elements

A method comprising:

generating a first plurality of output channels from an input channel for a first range of frequencies;
applying the first plurality of output channels, to a first array of M speaker elements disposed in a cylindrical configuration about an axis and playing back audio at a first range of frequencies, using a first rotation matrix to generate a first beam of audio content at a target angle about the axis;
generating a second plurality of output channels from the input channel for the second range of frequencies;
and
applying the second plurality of output channels, to a second array of N speaker elements disposed in a cylindrical configuration about the axis and playing back audio at a second range of frequencies, using a second rotation matrix to generate a second beam of audio content at the target angle about the axis.

2 more elements

Dependencies are inferred from the claim text.

Variable acoustics loudspeaker

Life of this patent

Variable acoustics loudspeaker

Life of this patent

Abstract

Claims18