项目驱动教学法在《数字信号处理技术》课程中的应用——以语音信号为例

针对《数字信号处理技术》课程内容复杂,公式和性质较多,与数学联系紧密等原因导致传统教学模式教学效果较差的问题,提出将项目驱动式教学法应用于课程教学。通过对语音信号进行数字化、时域频域分析、加噪及除噪作为项目任务,完成离散序列时域频域分析、序列运算及滤波器设计等相关章节授课。语音信号取自个人的录音,形象、生动,激发了学生学习兴趣,进行实施过程中发现缺课率明显下降,教学效果明显提高,有待进一步推广应用价值。

Because the course content of digital signal processing technology is complex, the formula and character are consider-able, and this course is closely related to mathematics, the teaching effect of traditional teaching mode is poor. Then this paper puts forward that the project-driven teaching method be applied to the course teaching. The teaching of discrete sequence time domain frequency, sequence operation and filter design and other related sections are completed through the digitization of voice signals, analysis of time domain frequency, taking noise and noise reduction as a project task. Speech signal taken from the individual record-ing is vivid and simulate students^ learning interest. In the implementation process, the absenteeism rate is found to decline markedly, teaching result is improved, and it is worthwhile applying and spreading.