Active noise cancellation filter adaptation with ear cavity frequency response compensation
US11790882B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2022 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | May 12, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/01
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Embodiments and methods perform ear cavity frequency response (EFCR) adaptive noise cancelation (ANC) with path-compensation over an entire main path to the eardrum (MPED) of a user. A number of ANC filter models are pre-trained to include respective anti-noise path (ANP) filter models and respective MPED filter models representing ANC filter configurations. As a user wears a headphone earpiece, characteristics of the wearer and the position/orientation of wearing manifest a wearer/wearing condition. Techniques described herein can continuously or periodically and efficiently determine which of the pre-trained ANC filter models most closely described the present MPED of the present wearer/wearing condition, and can continuously or periodically update the ANC filter configuration based on the pre-trained models to maintain high-performance ANC that includes EFCR path-compensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.