▍1. IT-RREC-P[1]5T
ITU P.563 语音质量评价,能只送入失真信信号,而不需要参考信号,便能评价失真信号的MOS分 (ITU P.563 voice quality assessment can only be sent to the distortion of the letter signals without the need for a reference signal will be able to evaluate distortion signal MOS score)