Audio spot system and audio spot forming method
US12192700B2 · kind B2 · utility
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1References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 30, 2020 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Sep 9, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An audio spot forming system (S) is an audio spot forming system which transmits an alert sound to a vehicle traveling on a road, the audio spot forming system including a first parametric speaker (1) configured to emit a sideband wave, and a second parametric speaker (2) configured to emit a carrier wave, in which the sideband wave and the carrier wave are caused to intersect with each other on the road to form an audio spot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.