In-ear active noise-cancelling earphone
US11115749B2 · kind B2 · utility
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1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2019 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Aug 8, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In-ear active noise-cancelling (ANC) earphones for which the ANC circuit remains stable even under varying wearing conditions, the earphones being worn so that an eartip of the earphone is at least partially in the external auditory canal, with at least one speaker with a frontal volume leading to a tip area and/or speaker channel, and with at least one ANC microphone. To ensure that the ANC circuit remains stable even with a small available space, the earphones feature the connection of a frontal volume and/or a speaker channel with an additional volume via a tube ending in the tip area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.