17. A method for performing speech recognition, said method comprising the steps of: receiving a spoken utterance by a user of said speech recognition system; providing a speech recognition dictionary including a plurality of orthographies potentially recognizable on a basis of the spoken utterance; processing said speech recognition dictionary to derive on the basis of the spoken utterance a list of orthographies, said list containing a plurality of orthographies, each orthography in said list being a candidate having a certain probability to correspond to the spoken utterance; providing a standard text lexicon including a plurality of orthographies; inserting at least one orthography from said standard text lexicon into said list to form an augmented list.
17. A method for performing speech recognition, said method comprising the steps of: receiving a spoken utterance by a user of said speech recognition system; providing a speech recognition dictionary including a plurality of orthographies potentially recognizable on a basis of the spoken utterance; processing said speech recognition dictionary to derive on the basis of the spoken utterance a list of orthographies, said list containing a plurality of orthographies, each orthography in said list being a candidate having a certain probability to correspond to the spoken utterance; providing a standard text lexicon including a plurality of orthographies; inserting at least one orthography from said standard text lexicon into said list to form an augmented list. 21. A method as defined in claim 17, comprising the step of inserting all the orthographies in said standard text lexicon in said list.