1. A speech recognition method in a system that controls one or more devices by using speech recognition, comprising: obtaining speech information representing speech spoken by a user; recognizing the speech information, obtained in the obtaining, as character information; and determining, based on the character information recognized in the recognizing, whether the speech is spoken to the one or more devices; generating, in a case where it is determined that the speech is spoken to the one or more devices based on the recognized character information, an operation instruction for the one or more devices; and not generating, in a case where it is determined that the speech is not spoken to the one or more devices based on the recognized character information, the operation instruction for the one or more devices, wherein at least one of the obtaining, the recognizing, the determining, and the generating is performed by circuitry, and wherein the determining whether the speech is spoken to the one or more devices includes analyzing a sentence pattern of the character information, determining whether the sentence pattern is interrogative, determining whether the sentence pattern is imperative, determining whether the sentence pattern is declarative, determining whether the sentence pattern is exclamatory, determining, in a case where the sentence pattern is interrogative, that the speech is spoken to the one or more devices, determining, in a case where the sentence pattern is imperative, that the speech is spoken to the one or more devices, determining, in a case where the sentence pattern is declarative, that the speech is not spoken to the one or more devices, and determining, in a case where the sentence pattern is exclamatory, that the speech is not spoken to the one or more devices.