1. A voice recognition system including a server device and a voice recognition device on a client side, which is connected to said server device, wherein said server device comprises: a server-side receiver that receives voice data inputted thereto from said voice recognition device; a server-side voice recognizer that performs voice recognition on the voice data received by said server-side receiver, and generates a server-side voice recognition result candidate; and a server-side transmitter that transmits said server-side voice recognition result candidate generated by said server-side voice recognizer to said voice recognition device, and wherein said voice recognition device comprises: a voice inputter that converts an uttered voice inputted thereto into said voice data; a client-side voice recognizer that performs voice recognition on said voice data converted by said voice inputter, and generates a client-side voice recognition result candidate; a client-side transmitter that transmits said voice data converted by said voice inputter to said server device; a client-side receiver that receives said server-side voice recognition result candidate transmitted by said server-side transmitter; a recognition result candidate comparator that compares a plurality of said server-side voice recognition result candidates received by said client-side receiver, to detect texts having a difference; a recognition result integrator that integrates said client-side voice recognition result candidate and said server-side voice recognition result candidate on a basis of said client-side voice recognition result candidate, said server-side voice recognition result candidate, and a detection result provided by said recognition result candidate comparator, to decide a voice recognition result; and an outputter that outputs the voice recognition result decided by said recognition result integrator.