1. A speech recognition apparatus comprising: a speech input unit configured to receive a speech command from a user; a communication unit configured to receive a result of processing for speech recognition acquired by at least one user terminal; and a controller configured to: compare a result of processing for speech recognition acquired from the speech command to the result of processing for speech recognition acquired by the at least one user terminal, and when a speech waveform acquired from the speech command received by the speech input unit is determined to be different from a speech waveform acquired by the at least one user terminal and a number of the result of processing for speech recognition acquired from the speech command is determined to be one, control a device in the vehicle based on the result of processing for speech recognition acquired from the speech command.