Active noise cancellation integrated circuit for stacking at least one anti-noise signal and at least one non-anti-noise signal, associated method, and active noise cancellation headphone using the same
US12300212B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2023 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Oct 7, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3051
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention relates to an active noise cancellation integrated circuit for stacking at least one anti-noise signal and at least one non-anti-noise signal, an associated method, and an active noise cancellation headphone using the same. The method is applicable to an audio playback device with at least one ANC filtering unit and at least one non-ANC filtering unit. The method includes: acquiring a non-anti-noise signal from a non-ANC filtering unit; generating a decoupled signal by processing the non-anti-noise signal with the transfer function of a physical channel and operations of an ANC filtering unit; performing a signal superposition, wherein an anti-noise signal from the ANC filtering unit is superposed with the decoupled signal; and performing an audio playback based on the superposed signal and an audio signal such that noise is eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.