Hybrid test tone for space-averaged room audio calibration using a moving microphone
US9736584B2 · kind B2 · utility
80Cited by
166References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 21, 2015 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Jul 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2227/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An example implementation may involve a playback device receiving a command that instructs the playback device to emit a calibration sound and responsively causing one or more speakers to emit a periodic calibration sound that covers a calibration frequency range. The periodic calibration sound may include (i) a first component that includes noise at frequencies between a minimum of the calibration frequency range and a first threshold frequency, and (ii) a second component that sweeps through frequencies between a second threshold frequency and a maximum of the calibration frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.