Speech signal transmission and reception apparatuses and speech signal transmission and reception methods
US9058804B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2012 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Jun 7, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/21
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A speech signal transmission apparatus includes an extractor to extract speech signals from speech source signals collected by a plurality of microphones, a power calculator to calculate powers of speech signals of multiple channels and set any one of the speech signals of the multiple channels as a reference speech signal, a synchronization adjustor to adjust synchronization of the other speech signals based on the reference speech signal, a signal generator to generate extraction signals by offsetting the reference speech signal from the other synchronization-adjusted speech signals, an encryptor to compress and encrypt the reference speech signal and the extraction signals, and a transmitter to transmit the compressed and encrypted reference speech signal and extraction signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.