Miniature Surround-Sound Loudspeaker
First Claim
1. Portable sound system, comprising one or more ultrasonic antennae adapted to generate at least one focused beam of ultrasonic sound, with parametric sound generation being highly localised around the focal point.
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Abstract
A portable sound system for use in portable devices such as laptops or mobile phones is described using the principles of parametric sound generation to create a virtual headphone-like system using focusable and steerage beams of ultrasonic sound emitted from a portage phased array or similar source of ultrasonic sound beams, focused at the vicinity of the left and right ear of the user. The system being also capable of producing audible surround sound and adapted to compensate for head motion through use of an optical based tracking system.
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16 Claims
- 1. Portable sound system, comprising one or more ultrasonic antennae adapted to generate at least one focused beam of ultrasonic sound, with parametric sound generation being highly localised around the focal point.
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12. A method of generating two or more sound channels, said method comprising:
- focusing at focal points in the vicinity of a user'"'"'s left and right ear, respectively, focused beams of ultrasonic sound at sufficiently high intensity to generate a non-linear sound mixing and using said mixing to create audible sound emanating from the focal points.
- View Dependent Claims (13, 14, 15, 16)
Specification