| 摘要 |
A mobile unit, such as a robot ( 12 ) for example, and a method of controlling a mobile unit are presented. The mobile unit has means of locomotion and is capable of acquiring and recognizing speech signals. If, for example due to its distance from a user ( 24 ) or due to sources of acoustic interference ( 20, 22 ), the position of the mobile unit ( 12 ) is of suitable to ensure that spoken commands from the user ( 24 ) will be transmitted or recognized to an adequate standard of quality, then at least one destination location ( 28 ) is determined at which it is likely that the quality of transmission or recognition will be better. The mobile unit ( 12 is then moved to a destination position ( 28 ). The mobile unit ( 12 ) may determine the prospective quality of transmission for speech signals from a user constantly in this case. Similarly, the quality of recognition may be determined only after a speech signal has been received and recognized. If the quality of recognition or prospective quality of transmission is below a preset threshold, then destination positions ( 28 ) are determined for the movement of the mobile unit ( 12 ) In one embodiment however, the movement of the mobile unit ( 12 ) may be abandoned if the burden determined for the movement to the destination location ( 28 ) is too high. When this is the case a message is passed to the user ( 24 ). |
