| 摘要 |
<p>The invention relates to a device, a mobile apparatus incorporating the device, an accessory therefore and a method for voice activity detection, particularly in a mobile telephone, using the directional sensitivity of a microphone system and exploiting the knowledge about the voice source's orientation in space. The device comprises a sound signal analyser arranged to determine whether a sound signal comprises speech. According to the invention, the device further comprises a microphone system (2a,2b,2c,2d,2e) arranged to discriminate sounds emanating from sources located in different directions from the microphone system, so that sounds only emanating from a range of directions are included as signals possibly containing speech. <IMAGE></p> |
