State Key Laboratory of Traction Power Southwest Jiaotong University Chengdu 610031 China;
CRRC Qingdao Sifang Co. Ltd. Qingdao 266111 China;
State Key Laboratory of Traction Power Southwest Jiaotong University Chengdu 610031 China;
School of Urban Railway Transportation Shanghai University of Engineering Science Shanghai 201620 China;
High-speed train; Interior noise; OTPA method; Acoustical source identification; Transfer path; Source contribution;