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2025, 49-62 ISSN: 1695-2618  \n[https://doi.org/10.4995/eurocall.2025.23948](https://doi.org/10.4995/eurocall.2025.23948)  \nRESEARCH PAPER  \nExploring AI as a Tool to Improve the English Pronunciation of Spanish-Catalan  \nTeenagers  \nMarina Palomo Martín * and Joaquín Romero Gallego ** Universitat Rovira I Virgili, Spain  \n* [marina.palomo@urv.cat](marina.palomo@urv.cat |)[ |](marina.palomo@urv.cat |) **[joaquin.romero@urv.cat](joaquin.romero@urv.cat)  \nHow to cite this article:  \nPalomo Martín, M. & Romero Gallego, J. (2025) . Exploring AI as a Tool to Improve the English Pronunciation of Spanish-Catalan Teenagers. The EuroCALL Review, 32 (2), 49- 62. [https://doi.org/10.4995/eurocall.2025.23948](https://doi.org/10.4995/eurocall.2025.23948)  \nAbstract  \nThis study investigates how artificial intelligence (AI) can be used to improve the pronunciation skills of English as a foreign language (EFL) learners, with a specific focus on American English vowel sounds. After a brief introduction to AI concepts, the research discusses the importance of teaching and learning pronunciation, the complexities of the English vowel system, and the specific difficulties encountered by Spanish-Catalan speakers. Furthermore, the possible use of AI in second language acquisition (SLA) and in the language classroom is also addressed. To assess the efficacy of AI tools, Siri and the Speakometer app were tested with 24 Spanish-Catalan teenagers, divided into a control group using traditional methods and an experimental group using the Speakometer app. Both groups received identical explicit instruction on English vowel sounds over four sessions. All participants interacted with Siri before and after the intervention to assess AI’s perception of their speech, while also being recorded for a subsequent analysis of their speech production. Since there were no significant differences between the groups with regard to their perception or production results either  \nbefore or after the intervention, the findings imply that, for this sample, current AI applications do not significantly help learners to improve their English pronunciation. Additionally, the study found that the stimulus type, as well as specific vowel sounds, affect AI comprehension, suggesting that existing AI tools have not yet reached the efficiency level needed to be used in EFL pronunciation practice.  \nKeywords  \nArtificial Intelligence (AI); English as a foreign language (EFL); pronunciation teaching; vowel articulation; AI tools for pronunciation learning; high school students  \n1. Introduction  \nAdvances in artificial intelligence (AI) and digital learning platforms are reshaping the way people approach language learning. However, despite these innovations, pronunciation instruction remains largely ignored in many language classrooms (Park, 2015), creating a significant gap in teaching practices. As a result, second language (L2) learners tend to struggle with their strong non-native accents, which can impede fluency, lower their confidence, and even cause communication breakdowns (Saito et al., 2015) . AI-powered language learning tools present new possibilities for overcoming these obstacles. Yet, some important questions persist: Can existing AI tools truly assist learners in improving their L2 speech production and achieving more native-like pronunciation? Is AI ready for inclusion in educational settings, or does it still have limitations in understanding human speech, particularly that of non-native speakers?  \n1.1. Artificial Intelligence  \nAI refers to the technologies that allow machines to mimic and perform tasks that normally require human intelligence. At its core is machine learning, where systems use previous data and computations to make progressively more accurate predictions (Janiesch et al., 2021) . Two key components of AI are natural language processing (NLP), which allows computers to understand and generate human language","cbCaifwlvGPRnIoL","https://ap.wps.com/l/cbCaifwlvGPRnIoL","pdf",448974,14,"English","# Introduction\n## Artificial Intelligence\n## The critical role of pronunciation in the EFL classroom","[{\"question\":\"What is the main goal of the study?\",\"answer\":\"To examine whether AI tools can improve English pronunciation for Spanish-Catalan teenagers learning EFL, especially American English vowel sounds.\"},{\"question\":\"How were participants and groups organized?\",\"answer\":\"Twenty-four Spanish-Catalan teenagers were divided into a control group using traditional methods and an experimental group using the Speakometer app.\"},{\"question\":\"What AI tools were tested and what was assessed?\",\"answer\":\"Siri and the Speakometer app were used, and the study assessed AI’s perception of participants’ speech and analyzed their speech production.\"}]","The EuroCALL Review - Volume 32 - Research Paper | PDF",1792042875,35]