Method, apparatus, and system for sound sensing based on wireless signals
US11448728B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2021 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Oct 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/462
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods, apparatus and systems for sound sensing based on radio signals are described. In one example, a described system comprises: a transmitter configured to transmit a first wireless signal through a wireless channel of a venue; a receiver configured to receive a second wireless signal through the wireless channel, wherein the second wireless signal comprises a reflection of the first wireless signal by at least one object in the venue; and a processor. The processor is configured for: obtaining a time series of channel information (CI) of the wireless channel based on the second wireless signal, determining a presence of a vibrating object in the venue based on the time series of CI (TSCI), extracting a sound signal from the TSCI, and reconstructing at least one speech based on the sound signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.