5. The apparatus according to claim 1 , wherein the matching unit performs matching between the search result target pronunciation symbol string and the recognition result pronunciation symbol string to which relevant words relating to the user information have been added.
5. The apparatus according to claim 1 , wherein the matching unit performs matching between the search result target pronunciation symbol string and the recognition result pronunciation symbol string to which relevant words relating to the user information have been added. 7. The apparatus according to claim 5 , wherein the user information estimation unit performs speaker specification for the speaker to estimate the speaker, and wherein the matching unit performs matching between the search result target pronunciation symbol string and the recognition result pronunciation symbol string to which relevant words relating to the speaker represented by the user information have been added.