METHOD FOR USING A HUMAN-MACHINE INTERFACE DEVICE FOR AN AIRCRAFT COMPRISING A SPEECH RECOGNITION UNIT

The general field of the invention is that of methods for using a human-machine interface device for an aircraft comprising at least one speech recognition unit, one display device with a touch interface, one graphical interface computer and one electronic computing unit, the set being designed to graphically present a plurality of commands, each command being classed in at least a first category, referred to as the critical category, and a second category, referred to as the non-critical category, each non-critical command having a plurality of options, each option having a name, said names assembled in a database called a "lexicon". The method according to the invention comprises steps of recognizing displayed commands, activating the speech recognition unit, comparing the touch and voice information and a validation step.