A study on subword modeling for utterance verification in Mexican Spanish

Mexican Spanish has received little attention so far despite being one of the most spoken Spanish dialects in the world with an enormous potential for interest. It presents some particular characteristics that differentiate it from the Spanish spoken in Spain that has been the dialect mostly studied during the past. We present our study on the properties of phones in Mexican Spanish and acoustic modeling required for the development of an utterance verification system for Mexican Spanish. Two different approaches for modeling the alternative hypothesis in the subword-level utterance verification system are also presented and compared.