The phase error estimation part utilize one pilottone to track the phase error and uses the estimation after compensation structure to improve precision.
残留相偏估计部分采用利用导频进行相偏跟踪的方法，并采用补偿后估计的结构来增加估计的精度。
2
In pilot research, researchers found that tone of voice, time of day, and the speaker's gender were irrelevant. In the new study they used clear, calm voices.