Temporary storage or specialized transmission of multi-microphone signals
US8036716B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2008 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Aug 4, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02165
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A communication device contains multiple microphones that receive acoustic signals from a user and from the background. The acoustic signals from the user are enhanced using the background acoustic signals to reduce background noise. The enhanced signal are transmitted to an emergency network when an emergency call is made from the communication device. The raw signals are stored in the communication device for later retrieval or are transmitted simultaneously with the enhanced signals. The enhanced signals are transmitted using a circuit-switched voice mode while the raw signals are transmitted using a packet-switched voice mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.