Distortion/(失真) -> Sound Production and Manipulation [SPM]/(制作与处理)

Distortion/(失真) -> Acoustics/(声学) -> Disciplines of Study [DoS]/(多学科研究)

Distortion/(失真) -> Tier 5 Practical Aspects Related to Production/(第五层实践方面与制作相关) -> Users Group/(用户群)