28. An apparatus for generating a record sentence for establishing a speech corpus, the apparatus comprising: a speech synthesis unit that generates a synthesized sentence of speech and synthesis information indicating information related to speech synthesis by performing speech synthesis for a predetermined sentence of text using candidate synthesis units transmitted from a synthesis database; an unseen sentence selection unit that selects an unseen sentence including an unseen unit according to the generated synthesis information; a generation unit extraction unit that generates a weight indicating a recording priority of an unseen unit included in the selected unseen sentence; and a record sentence generation unit that generates a record sentence by combining an unseen unit with the speech synthesis information according to the generated weight and automatically updating the speech corpus by storing the record sentence including the unseen unit, wherein the synthesis database is updated based on the updated speech corpus, wherein the unseen unit is selected as a synthesis unit when a speech unit of satisfactory quality cannot be obtained from candidate synthesis units extracted from the synthesis database, and is updated based on the updated synthesis database.
28. An apparatus for generating a record sentence for establishing a speech corpus, the apparatus comprising: a speech synthesis unit that generates a synthesized sentence of speech and synthesis information indicating information related to speech synthesis by performing speech synthesis for a predetermined sentence of text using candidate synthesis units transmitted from a synthesis database; an unseen sentence selection unit that selects an unseen sentence including an unseen unit according to the generated synthesis information; a generation unit extraction unit that generates a weight indicating a recording priority of an unseen unit included in the selected unseen sentence; and a record sentence generation unit that generates a record sentence by combining an unseen unit with the speech synthesis information according to the generated weight and automatically updating the speech corpus by storing the record sentence including the unseen unit, wherein the synthesis database is updated based on the updated speech corpus, wherein the unseen unit is selected as a synthesis unit when a speech unit of satisfactory quality cannot be obtained from candidate synthesis units extracted from the synthesis database, and is updated based on the updated synthesis database. 44. The apparatus for generating the record sentence for establishing the speech corpus of claim 28 , wherein the synthesis information comprises: text information that is syntactic interpretation information regarding a synthesis unit and a text unit related to speech synthesis.