In general, the design of phase-lock loops has been done by a combination of linear analysis, phase plane plots, rule of thumb, and simulation.
锁相环一般采用线性分析，相平面图，近似计算法以及计算机模拟来设计。
The L3 features a linear phase crossover which doesn't introduce phase distortion between the frequency bands. The crossover points are selectable by the user.
L3特有的线性相位交点可以保证在常用波段之间不产生失真，而交点是由用户选定的。
In this paper we study linear phase maximally decimated FIR cosine modulated filter banks, in which each filter has linear phase and is obtained by modulating the prototype filter by cosine sequences.
现研究了一种具有线性相位的最大抽取FIR余弦调制滤波器组，该滤波器组中每一个滤波器都具有线性相位，且由原型滤波器经余弦序列调制得到。
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