Abstract: A voice application system includes elements for acquiring at least one phrase spoken by at least one user connected to semantic analysis element including members for recognizing keywords belonging to the phrase stated and capable of generating an ordered list of keywords, called a listing, for the phrase spoken, the recognition members being connected to elements providing an association in the form of rules between at least one predetermined keyword and a specific action and elements for selecting at least one particular action when a set of keywords included in the corresponding rule are present in the phrase stated. The selection elements run through the set of rules for the purposes of identification and for each given rule search for the presence of a set of keywords for that rule in the phrase stated in order to select the corresponding specific action relating to the rule so determined and identified.