皮皮学，免费搜题
登录
搜题
【简答题】
数字高通滤波器可用如下变换由一个模拟低通滤波器求得 (1)证明上述变换将s平面的虚轴映射成z平面的单位圆。 (2)证明如果H a (s)是一个所有极点均在s平面左半平面上的有理函数，则H(z)将是所有极点均在z平面单位网内的有理函数。 (3)为了得到所要求的数字高通滤波器的技术指标 |H(e jω )|≤0.01， |ω|≤π/3 0.95≤|H(e jω )|≤1.05， π/2≤|ω|≤π 求相应的模拟低通滤波器的技术指标。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Which nucleus doesn't belong to the parasympathetic nuclei as follows?
A.
accessory nucleus of oculomotor nerve
B.
superior salivatory nucleus
C.
dorsal nucleus of vagus nerve
D.
inferior salivatory nucleus
E.
nucleus ambiguous
【单选题】What nucleus is located in the facial colliculus?
A.
Nucleus of abducent nerve
B.
Nucleus of facial nerve
C.
Nucleus of trochlear nerve
D.
Nuclerus of hypoglossal nerve
E.
Dorsal nucleus of vagus nerve
【单选题】What role does nacre play in the formation of pearls?
A.
It provides the nucleus around which a natural pearl develops.
B.
It is a calcium coating that protects the outside of the oyster's shell.
C.
It penetrates the membrane covering the oyster's soft body.
D.
It is the luminous substance that forms the pearl's outer layers.
【单选题】There are just as many protons in the nucleus as electrons______ around it.
A.
revolving
B.
spinning
C.
rotating
D.
spiraling
【单选题】What is the nucleus that does not belong to the hypothalamus?
A.
Paraventricular nucleus
B.
Ventral posterolateral nucleus
C.
Supraoptic nucleus
D.
Mammillary body
E.
Dorsomedial hypothalamic nucleus
【单选题】Which cranial nerve nucleus lies in the medulla oblongata
A.
pontine nucleus
B.
nucleus of facial nerve
C.
abducens nucleus
D.
inferior salivatory nucleus
【单选题】NSTL购买了电子期刊和数据库为国内用户免费服务,其中不包括:
A.
658种网络版全文电子期刊
B.
4种外文事实型数据库
C.
1500种外文回溯全文期刊
D.
9072种电子书
【简答题】Around the nucleus of a hydrogen atom moves a single electron.
【单选题】Which nucleus receives the visceral sensory fibers in the brainstem?
A.
cochlear nucleus
B.
vestibular nucleus
C.
inferior olivary nucleus
D.
solitary nucleus
E.
sensory nucleus of trigeminal nerve
相关题目：