地震信号是以二进制编码的数字形式储存的。
设计出了二次调制系统：采用连续可变斜率增量调制（ CV SD）实现模拟话音信号与数字编码的转换，采用二进制相对相移键控（2 DPSK）作为数字调制方式。
A twice modulation is designed:, CVSD was adopted to realize conversion between analog and digital voice signals, 2DPSK was used as the digital modulation mode.
通过FIR数字滤波器卷积和操作的计算机数值仿真表明，采用这些方法运算得到的结果与传统二进制算术编码算法完全等效，可应用于混沌信号处理系统。
By computer simulation with convolution sum of FIR digital filter, the results show that the model is the same as traditional binary coding arithmetic which can be used in chaotic...
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