| 摘要 |
PURPOSE:To prevent the reduction in the voice recognition rate under noise by fetching a background noise just before the reception of a registered voice or a command voice and eliminating the background noise from the received voice or the command voice. CONSTITUTION:When a registration switch 5 or a command switch 6 is thrown to a contact 5b or 6b, a noise signal processing circuit 4 receives a signal outputted from an amplifier 2 and outputs a noise signal eN. A subtraction circuit 7 receives output signals eV, eN of a voice signal processing circuit 3 and a noise signal processing circuit 4 and subtracts the signal eN from the signal eV to output only a voice signal (e). A voice recognition computer 8 receives the voice signal (e) and when the voice registration switch 5 is thrown to the position of the contact 5a, the said voice is registered and when the command switch 6 is thrown to the position of the contact 6a, the command voice is collated with the registered voice and when they are coincident, the content registered in response to the said command voice is displayed on a display section. Thus, the reduction in the recognition rate under noise is prevented. |
