Now I told you earlier that I'd spent a good part of my career understanding and studying the source characteristics of people with severe speech disorder, and what I've found is that even though their filters were impaired, they were able to modulate their source: the pitch, the loudness, the tempo of their voice.
早先我告诉过你们 我花了我职业生涯中的很大一部分时间 来了解和学习 那些有着严重言语障碍的人的 声源的特征， 我发现 虽然他们的过滤器受损， 他们仍然能够控制他们的声源， 包括音高、响度和声音的节奏。