To verify, visit this hearing test site.
Why is this important for Traveller? Well, those Vargr pirates have slightly better ears than you have for the high frequencies (MegaTraveller’s Vilani & Vargr, page 40-42) so they can better detect where your hiding. On the other hand, a Vargr engineer can better detect certain early problems with the jump engine, before it becomes “so obvious that even a human would know!”
On the other hand, they have worse hearing in the low frequencies, so – despite their reputation – humans can out-hear Vargr when it comes to several mechanical problems. It’s in the area of smell where Vargr senses leave humans in the dust – and in the area of colours where humans blast past the Vargr.