Device for modifying and improving the behavior of speech recognition systems

摘要

A speech recognition system comprises a controller application, a speech recogniser, and a modification apparatus disposed between them. The controller application has an output arranged to produce a speech signal, an input arranged to receive a recognised speech result signal and a control command output arranged to produce a command signal. The speech recogniser has a pattern matcher, a speech input arranged to receive the speech signal from the controller application, an output arranged to produce the recognised speech result signal and a control command input arranged to receive the command signal. The modification apparatus is disposed between the output of the controller application and the input of the speech recogniser; between the output of the speech recogniser and the input of the controller application; and between the control command output of the controller application and the control command input of the speech recogniser. The modification apparatus is arranged to modify at least one of the signals between the controller application and the speech recogniser. In this way speech recognition accuracy can be significantly improved. The modifications may result in changing the behavior of the controller or the recogniser according to a combination of the previous recognised speech results or on data from external sources.