Loudspeaker

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes a loudspeaker system that achieves directional sound emission (beamforming) using one or more sound drivers connected to at least two waveguides. Each waveguide channels the soundwaves to distinct output locations, which, through their arrangement and the delays induced by the waveguide lengths, control the directionality of emitted sound. Unlike conventional solutions that require multiple drivers and complex electronic processing, this invention enables flexible, low-cost, and space-efficient beamforming using mainly passive acoustic structures.

Use CasesContent extracted from patent full text and abstract with AI.

• Consumer electronic devices (TVs, smart speakers, home audio systems) that require targeted sound projection.
• Automotive audio systems where sound directionality improves user experience or privacy between zones.
• Medical environments (like MRI rooms) where metal-free, remotely powered loudspeakers are needed for safety reasons.
• Public address systems or conference equipment where focused sound reduces noise pollution or echo.
• Theater, museum, or exhibition installations that need specific sound zones without extensive wiring or multiple speaker arrays.

BenefitsContent extracted from patent full text and abstract with AI.

• Greatly reduces the number of drivers and associated electronics needed for beamforming, lowering cost and complexity.
• Enables highly flexible loudspeaker designs that can fit into tight or oddly shaped spaces—ideal for automotive or portable electronics.
• No need for complex digital signal processing; beamforming achieved via passive acoustic design.
• Permits use of inexpensive, easily manufactured materials and shapes (such as plastic tubes).
• System can be made mostly without metal, which allows use in sensitive environments (like MRI rooms).
• Facilitates new possibilities for customizable audio zones or adaptive, steerable sound fields in consumer and automotive applications.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

A loudspeaker comprises one or more drivers and at least two waveguides. The one or more drivers are arranged to emit soundwaves. The waveguides are coupled to the one or more drivers to receive the soundwaves emitted by the one or more drivers. The first of the at least two waveguides has an output position at a first position of the loudspeaker and is configured to forward the received soundwaves to the output at the first position, wherein a second of the at least two waveguides has an output position at a second position of the loudspeaker and is configured to forward the received soundwaves to the output at the second position.