从数字经济的基础设施建设、区域经济发展、数字经济结构、数字经济三次产业的发展等多方面,对我国数字经济的发展状况进行研究.系统分析存在的问题,针对性地提出加大数字基础设施建设力度、推动数字经济区域协调发展、实现产业数字化和数字产业化平稳推进、提升数字经济中三次产业渗透率、加大基础科研和数字技术创新力度、加速建立数据规则、充分利用数字经济的规模效应、加大数字经济领域复合型人才培养、强化重点行业应用示范,以及推动数字经济开放合作生态圈等具体应对措施.

Aiming at the difficult points in the teaching of speech signal processing,a novel demonstration platform based on MATLAB is proposed.The platform can achieve signal acquisition,preprocessing,and many other basic speech signal processing functions.Based on the explanation of the overall design idea,several Matlab assisted teaching scenarios were discussed.The teaching practice proves that the demonstration platform does not only enhance the students’understanding of the basic principles and knowledge of speech sig-nal processing,but also improve their hands -on problem -solving and analysis ability.