1. A speech recognition apparatus for allowing setting by speech, comprising: an input unit configured to input a setting instruction by speech; a speech interpretation unit configured to recognize and interpret contents of the setting instruction by speech to generate first structured data containing candidates of the interpretation result; an instruction input detecting unit configured to detect a setting instruction input by a user; an instruction input interpretation unit configured to interpret contents of the setting instruction input to generate second structured data; and a selection unit configured to select one of the interpretation candidates contained in the first structured data on the basis of the second structured data.