Sound wave dead spot generation
US11551658B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2020 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Dec 3, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/01
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A speaker system uses destructive wave interference to generate “dead spots” with respect to an audio presentation. The signal for the dead spot generating device can be an inverted signal generated using the audio signal. In one embodiment, the inverted signal is generated using the audio signal, an indication of loudness at one or more active speakers, and a determination of the characteristics of the sound path from the one or more active speakers (including delay and attenuation).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.