System and method for a speaking chamber with voice cancellation
US11908441B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Oct 19, 2023 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Oct 19, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3224
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A sound muffling chamber covers a nose and mouth in an airtight manner. The sound muffling chamber includes a microphone that detects vocal sound waves in the sound muffling chamber and generates a voice signal. A digital signal processing system analyzes the voice signal and generates a voice cancellation signal. A sound silencing chamber includes a speaker that generates out of phase sound waves in response to the voice cancellation signal that superimposes on and cancels the vocal sound waves. A sound decelerator is positioned between the sound muffling chamber and the sound silencing chamber and configured to increase a traveling time of the vocal sound waves such that the vocal sound waves' arrival at the sound silencing chamber may be synchronized with the arrival of a voice cancellation signal. The sound muffling chamber may include inflatable cells separated by slats such that the sound muffling chamber is foldable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.