Acoustic sensing and alerting
US10867501B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2018 |
| Grant date | Dec 15, 2020 |
| Priority date | — |
| Expiry date | Jun 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A housing can be wearable by a user. At least one microphone in or on the housing can sense ambient audio and produce at least one time-domain audio signal. The housing can be passive, such that the sensed ambient audio does not include any sound emitted from the housing. A transformation circuit can transform the at least one time-domain audio signal to form at least one frequency-domain audio signal. An identification circuit can identify a spectral feature in the at least one frequency-domain audio signal. A tracking circuit can track a time evolution of the spectral feature. A determination circuit can determine from the tracked time evolution of the spectral feature that the spectral feature corresponds to an object moving toward the housing. An alert circuit can alert the user, in response to the determination circuit determining that the object is moving toward the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.