单词：prototype filter
prototype filter的用法和样例：
例句
- An optimal design method for the prototype filter design of the filtered multitone modulation system is proposed.摘要给出了滤波多音调制系统的原型滤波器优化设计方法。
- In our proposed method, both the objective function and the perfect reconstruction condition are expressed as a quadratic function of the prototype filter coefficient vector.该方法中，目标函数和完全重构条件均被表示成为原型滤波器系数矢量的二次函数形式。
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