Abstract: A system and method for generating dynamic grammars for use by a speech recognition system in response to signals from sensors indicative of the position and/or movement of a vehicle or platform, such as an aircraft or helicopter.

Abstract: A system and method for confirming command or speech recognition results returned by an automatic speech recognition (ASR) engine from a command issued by an operator of a vehicle or platform, such as an aircraft or unmanned air-vehicle (UAV). The operator transmits a command signal to the ASR engine, initiated by an activation means, such as a push-button (formally known as push-to-talk or push-to-recognize). A recognition result is communicated to the user and the system awaits the confirmation for a limited period of time. During this period, in one embodiment, a low tone with high prosody is played to notify the user that the system is ready to receive the confirmation. If the user quickly presses and releases the push-button a predetermined number of times (for instance, twice to make a double-click), the result is confirmed and the ASR forwards a command signal to a system controlled thereby. Otherwise, the ASR waits for another speech command.