主题：[求助] 耳机单元产生的电磁辐射有害？

Moreover, since the headphone transducers are not aimed directly at the auditory canal,
listeners perceive the same volume with up to 40 percent lower sound pressure levels.
This may significantly reduce the risk of hearing damage (safer hearing) while ensuring
hours of fatigue-free listening – an absolute must if you spend a lot of time in
headphones.

他指的是通过把喇叭斜置不直接入射耳道，让人感觉同样响度下，声压级测量值会低。