Communications in Computer and Information Science

This book constitutes the refereed proceedings of the 20th National Conference on Man-Machine Speech Communication, NCMMSC 2025, held in Zhenjiang, China, during October 16–19, 2025.The 40 papers included in these proceedings were carefully reviewed and selected from 157 submissions. the conference will feature special events such as a Young Scholars Forum, Student Forum, Industry Forum, and Product and Technology Exhibition. Beyond the main program, the conference will also include publicoutreach activities, grant-writing workshops, and several special sessions.