1. A method of recognizing a voice input signal involving multiple languages, the method comprising: receiving the voice input signal which is input by a user; recognizing the voice input signal by using a voice recognition algorithm for a primary language of the multiple languages; identifying a segment of the voice input signal, which is in a non-primary language, in the voice input signal based on the recognition for the primary language; determining a language of the segment of the voice input signal based on context information; recognizing the segment of the voice input signal by using a voice recognition algorithm for the determined; and outputting a recognition result of the voice input signal which is based on the recognition for the primary language and the recognition for the determined language.
1. A method of recognizing a voice input signal involving multiple languages, the method comprising: receiving the voice input signal which is input by a user; recognizing the voice input signal by using a voice recognition algorithm for a primary language of the multiple languages; identifying a segment of the voice input signal, which is in a non-primary language, in the voice input signal based on the recognition for the primary language; determining a language of the segment of the voice input signal based on context information; recognizing the segment of the voice input signal by using a voice recognition algorithm for the determined; and outputting a recognition result of the voice input signal which is based on the recognition for the primary language and the recognition for the determined language. 8. The method as claimed in claim 1 , wherein identifying the segment of the voice input signal, which is in the non-primary language, in the voice input signal based on the recognition for the primary language comprises: segmenting the voice input signal in a unit of phoneme; determining a similarity between at least one segmented phoneme and a word in the primary language by matching the at least one segmented phoneme with a database of phonemes in the primary language; and identifying that the at least one segmented phoneme having the determined similarity less than a preset threshold belongs to the segment of the voice input signal.