Wearable active noise reduction (ANR) device having low frequency feedback loop modulation
US12300209B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Dec 4, 2023 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Dec 4, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/01
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Various aspects include a wearable audio device having active noise reduction (ANR). In some cases, a method for processing audio signals includes receiving a noise reduction signal configured to modify an audio signal and generate a noise reduced audio signal, the noise reduction signal having a nominal loop gain; and generating an adjusted noise reduction signal in response to a detected adverse low frequency event, the adjusted noise reduction signal having a modulated loop gain configured to reduce artifacts in the noise reduced audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.