Acoustic identification of audio products
US11726161B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2021 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Oct 25, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are techniques for a multimedia device with audio and video capturing capability to identify an audio device based on acoustic playback signal if the audio device cannot be identified from captured video. The multimedia device may assemble a list of candidate audio devices that are a possible match for the observed audio device from a database of previously recognized audio devices and may transmit commands to the candidate audio devices to play acoustic identification signals. The acoustic identification signals may be audible sound or ultrasonic tone sequences with embedded identification information unique to each audio device. The multimedia device may record and analyze the acoustic identification signals received from any of the candidate audio devices to construct metrics to select the most likely candidate for the observed audio device. The metrics may include time of flight, direction of arrival, received amplitude, direct-to-reverberant ratio (DRR) of the acoustic identification signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.