Second language articulatory training and computer-generated feedback in L2 pronunciation improvement

This paper investigates the efficacy of articulatory training and acoustic feedback on Persian L2 learners’ production of English segmental (/ɒ/). A sample of 30 Persian ESL learners was recruited- 10 learners were randomly assigned to the experimental group 1, 10 to the experimental group 2, and 10 to the control group. Over a five-week period, the experimental group 1 received training on the manner of articulation of the segment, the experimental group 2 received acoustic-articulatory training and was exposed to CALL software for receiving feedback, and the control group was only exposed to auditory input. The groups were given a pretest, an immediate posttest, and a generalization test. The results of the study showed a significant improvement in the performance of the participants in both the posttest and the generalization test in the experimental group 2. These findings suggest the inefficiency of the mere knowledge of the manner of articulation of the segment and lend support to the feasibility of using acoustic features of sounds and computer-based, learner-centred programs for second language segmental acquisition.