1. A method for recording verbal expressions of a person for use in a vehicle navigation system having a database including a map and text describing street names and points of interest of the map, the method comprising: obtaining from the database text of a word having at least one syllable; analyzing the at least one syllable with a greedy algorithm to construct at least one text phrase comprising each syllable of the at least one syllable, such that the number of phrases is at least substantially minimized; converting the at least one text phrase to at least one corresponding phonetic symbol phrase; displaying to the person the at least one phonetic symbol phrase; the person verbally expressing each phrase of the at least one phonetic symbol phrase; and recording the verbal expression of each phrase of the at least one phonetic symbol phrase.