The unambiguous distance oftone ranging system is limited by the lowest frequencyoftone.
侧音测距系统的最大无模糊距离受到侧音信号最低频率的限制。
2
This too causes the waveform to lose energy as well as, in turn, frequency and pitch, resulting in you hearing a distorted, lower tone than what people hear directly from out of your mouth.
这同样使声波能量降低,随之带来音调和音高的降低,使得我们自己听到的声音远低于周围人直接听到的声音。
3
The weak intonation is shown in the following features: low fundamental frequency, narrow pitch range, and the rising of boundary tone.