voice frequency filter

• 话频滤波器

voice frequency filter的用法和样例：

例句

1. Method of insertion loss measurement for radio frequency filters.
   射频滤波器插入损耗的测量方法。
2. This paper presents a theoretical study of the tunability of frequency selective filter extended cavity semiconductor lasers.
   本文分析选频滤波器负载外腔半导体激光器的调谐特性。