User blog comment:Bowserdude/Mega VS Astro Rant/@comment-26458478-20151113202440/@comment-1652808-20151113205226

Honestly, the whole noise crush thing was slightly debunked when they said adjustable hearing.

Meaning that Astro would be anywhere from normal human hearing to 1000x normal hearing at any point. If Megaman did use Noise Crush, Astro could easily turn his hearing to normal before it would affect him.