AbstractThis paper focuses on the task of identifying a language from speech signal. In this paper, we have use Mel-frequency cepstral coefficient as features. Language identification models are developed for fifteen Indian languages namely Assamese, Bangla, Guajarati, Hindi, Kannada, Kashmiri, Malayalam, Marathi, Nepali, Oriya, Punjabi, Rajasthani, Tamil, Telugu and Urdu using these spectral features. The identification of above mentioned languages is carried out using Gaussian mixture model. A Semi natural read database is used for obtaining the language specific information. MFCC is obtained by using linear cosine transform of log power spectrum on a nonlinear mel-frequency scale. This paper shows that the performance of Language identification system is better when trained and tested with twenty nine features as compared to six, eight, thirteen, nineteen and twenty one MFCC features. It means more the number of features we use better the result we get. The average language recognition rate over fifteen Indian languages is around 88\%.