| 摘要 |
The invention provides a method and a portable device, for example a telephone, configured to communicate a speech signal in a wireless telephone communications system, comprising: means (22, 102) for receiving digital speech samples and extracting corresponding acoustic features from said speech samples, wherein said acoustic features comprise cepstrum coefficients that require less bandwidth than the digital speech samples; and means (24, 104) for wireless transmission of the acoustic features across dedicated channel bandwidth in the wireless telephone communications system in a form for later decoding by a central communications center (42). |
