Comparative analysis of American English and Mexican Spanish consonants for Computer Assisted Pronunciation Training

Abstract

The objective of this work is two-fold. Firstly, we aim at detecting similarities and differences between the consonant systems of two languages, namely, American English and Mexican Spanish. To achieve this, we perform a theoretic comparative analysis of consonants of the two languages at the level of both phonemes and allophones. Secondly, a possible practical usage of our results is considered; therefore, as an example of an application, we consider computer-assisted pronunciation training (CAPT) for teaching American English pronunciation to Mexican Spanish speakers. In particular, we took advantage of the results of our analysis to define some hypothetic error patterns which can be used as a starting point for diagnosing possible mispronunciations, their posterior verification, and adjustment taking into account the principles of phonotactics and empirical phonetic analysis of the English learners’ speech. The latter will result in error rules to be applied in a CAPT system for error identification and generation of appropriate corrective feedback. An adequate choice of correcting techniques will improve English pronunciation acquisition and help learners to develop less accented speech. Also, similarities found between the two consonant systems make it possible to organize and present the pronunciation teaching material using a stress-free method of helping learners to adjust their speech organs to new sounds building on the phonetic habits of their first language.