假频 meaning in Chinese

alias

If the sampling frequency is less than this, we can expect a serious distortion of output frequency which is generally referred to as aliasing .
如果取样频率小于此数，那么输出频率就要产生严重畸变，通常假频指的就是这种情况。
Anti alias criterion
去假频准则
Anti alias filter
去假频滤波器
Based on the geophone vibration formula , this paper presents the affective factors to the seismic data from high resolution geophone arrays and its main property specifications , such as natural frequency , damping coefficient , sensitivity , harmonic distortion , and alias
为此，从检波器的振动方程出发，对高分辨率地震检波器性能指标（如自频率、阻尼系数、灵敏度、谐波失真、假频等）以及检波器组合的连接方式对地震资料品质的影响进行了分析。