Determining direction of networked microphone device relative to audio playback device
US9693164B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2016 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Aug 5, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Example techniques involve determining a direction of an NMD. An example implementation includes causing two audio drivers to output audio content, where the audio drivers are positioned at a known distance apart in a given azimuthal plane and recording the audio content output by the two audio drivers. The implementation also includes causing a processing device to identify a direction of the NMD relative to a center point of the two audio drivers in the given azimuthal plane. Identifying the direction of the NMD may involve determining a range of possible azimuthal angles between the NMD and the center point, the range of possible angles dependent upon the known distance between the two audio drivers and a phase offset between the two audio drivers indicated by the recorded audio content output. The implementation further includes causing a playback device to adjust calibration based on the identified direction of the NMD.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.