论文部分内容阅读
在教学实践中,我们发现学生在上大课时,由于听课人数多、空间大,授课教师必须提高嗓音,但是还达不到预期的效果,影响了教学质量,因此我们研制了一套扩音系统,不失真地放大讲课教师的音量。由于有线话筒需固定在讲台的某一位置,而教师讲课时来回走动,携带很不方便,又由于音源位置的变化,扩大的声音会忽强忽弱,达不到预期的效果。因此,我们研制了无线调频话筒,做成微形笔式,别在授课教师的上
In teaching practice, we found that because of the large number of lectures and the large space of lecturers, the lecturers must raise their voices in the large class, but they also failed to achieve the expected results and affected the quality of teaching. Therefore, we have developed a set of sound reinforcement systems , Without distortion to enlarge lecture teacher’s volume. Because the wired microphone needs to be fixed at a certain position in the podium, the teacher moves around while lecturing, which is very inconvenient to carry. Due to the change of the position of the sound source, the expanded sound will be strong and weak, failing to achieve the expected effect. Therefore, we developed a wireless FM microphone, made of micro-shaped pen, do not instruct teachers