若连续线性时不变系统的输入为f(t),输出为y(t),则系统无畸变传输的时域表达式为y(t)= 。( )
举一反三
- 若连续线性时不变系统的输入为f(t),输出为y(t),则系统无畸变传输的时域表达式为y(t)=[img=432x96]17d602b090fd859.png[/img] 。( )
- 若连续线性时不变系统的输入信号为f(t),响应为y(t),则系统无畸变传输的时域表达式为y(t)_________。
- 已知系统函数<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202011/e39da45535184440b4f478ab5106f452.png" />,系统微分方程为( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202011/ffc04b8a434a4c00b9143c405784376c.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202011/2f0eba48174d43b9b307acbb25fff331.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202011/c8b83cd3d24d48ac9619b499d191fd35.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202011/2d16a22cef6a4da2b8100854c0707ae8.png" />
- 已知FIR滤波器的系统函数为<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202011/cf0cd3c44e3b4c8caddd2dedf879df44.png" />该滤波器的直接型结构为( ) A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202011/743fa5f74cb247709f71f6073b1d9314.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202011/144df71eb06e4de1a5e3e68f9654a01d.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202011/08021fd141554e9ca46aa53e75f3f0a0.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202011/540fe691ef21498e87954c2f022a0418.png" />
- 为使系统的输出信号在采样点之间不出现纹波,当输入为单位斜坡信号时,必须满足t≥NT时,()。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202007/1a8b8a7715fb42ec8fb8bde08d19286f.png" >为常数 B: y(t)=常数 C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202007/26e61c1cc9f94796a100151b2bd920ca.png" >为常数 D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202007/7e82912d07424d1ab8f8f2bc12cae983.png" >为常数