Playback devices having waveguides
US10667041B2 · kind B2 · utility
0Cited by
32References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2019 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Aug 27, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A playback device comprises an electroacoustic transducer; an acoustic waveguide in fluid communication with the transducer; and a housing delimiting an opening of the waveguide, the opening extending around an axis passing through the transducer. The opening may have a radial distance from the axis that varies with an azimuthal angle about the axis. An acoustic path length within the waveguide, between the transducer and the opening, is substantially constant and independent of azimuthal angle about the axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.