RT book part T1 Explainable Artificial Intelligence for Audio-based Detection of Emergency Vehicles A1 Balderas Díaz, Sara A1 Guerrero Contreras, Gabriel José A1 Muñoz Ortega, Andrés A1 Durães, Dalila A1 Novais, Paulo A2 Ingeniería Informática K1 Explainable Artificial Intelligence (XAI) K1 audio-based emergency detection K1 urban sound classification K1 machine learning K1 feature importance analysis AB With the increasing adoption of AI in safety-critical applications within urban environments, the interpretability of these systems is paramount. This study explores the application of Explainable Artificial Intelligence (XAI) techniques to enhance transparency in audio-based detection of emergency vehicle sirens, a crucial component in urban sound management. Adopting methods such as SHAP (SHapley Additive exPlanations) values, Permutation Feature Importance, and model-specific feature scores, this research identifies key audio features, including mid-frequency spectral contrasts and targeted chroma components, which significantly help in distinguishing siren sounds among urban noise. The study examines various machine learning models, identifying K-Nearest Neighbors (KNN) and XGBoost as top performers; KNN excelled in class-specific precision, while XGBoost demonstrated strong cross-class discrimination. The findings highlight the potential of XAI in improving both accuracy and accountability for sound detection systems in safety-critical urban applications, advancing the deployment of transparent AI within smart city infrastructures. PB IEEE Xplore SN 979-8-3315-2358-9 SN 2472-7571 YR 2025 FD 2025-08-26 LK http://hdl.handle.net/10498/37705 UL http://hdl.handle.net/10498/37705 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 05-nov-2026