复杂振动中频率最低的成分(基频或一次谐波)。
The filter has no fundamental frequency decay and phase delay, and all harmonics above2nd order are filtered.该滤波器在基频处的幅值无衰减,相位无延时,能将2次以上的谐波全部滤掉。
The sounds that were equivalently different in Harmonicity and fundamental frequency were targeted for changing in the study.谐度与基频差相同的声音将会在研究当中作为进行对比试验的不同声音。