2026-04-14T04:44:41Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/4299912025-07-22T18:44:00Zcom_2072_1033col_2072_452951

Analysis of Catalan-Castilian Code-Switching in Automatic Speech Recognition Serra i Montes, Pol Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions Barcelona Supercomputing Center Hernando Pericás, Francisco Javier Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament de la parla i del senyal acústic Automatic speech recognition Deep learning (Machine learning) Code switching (Linguistics)) ASR Deep Learning Transformers Code-Switching Reconeixement automàtic de la parla Aprenentatge profund Alternança de codi (Lingüística) This Master’s Thesis addresses the challenge of Catalan–Castilian code-switching in speech recognition. It develops synthetic corpora by combining machine-translated text chunks, large language model prompts, and semi-structured dialogues, then uses text-to-speech to produce audio samples. After fine-tuning ASR models, results indicate better recognition of artificially generated code-switching data but highlight limitations in real-world scenarios, such as emergency calls. The research underscores the need to incorporate more authentic recordings for stronger generalization, offering a practical framework to improve code-switching handling in multilingual ASR systems. 2025-02-11 Master thesis https://hdl.handle.net/2117/429991 ETSETB-230.193669 eng S'autoritza la difusió de l'obra mitjançant la llicència Creative Commons o similar 'Reconeixement-NoComercial- SenseObraDerivada' Open Access application/pdf Universitat Politècnica de Catalunya