1. A speech recognition method performed by a speech recognition system including hardware, comprising: storing in a conference database of the speech recognition system, dialect information of each user of one or more users, subject information, and resume information; selecting, by a model selection unit of the speech recognition system, an acoustic model for each user based on said dialect information of each user and a language model based on said subject information and said resume information; and translating, by a speech recognition unit of the speech recognition system, input speech into text data based on said selected acoustic model and language model.