Interesting, perhaps dragon language sounds the same too all
My female Khajiit sounded extremely cute when using first level of shouts. When I charge them up to next level, she began to sound like a male brute and much less than a cat.
My Imperial I don't hear any difference from my Nord.
Interesting my argonian sounds exactly the same as my cousin's nord. they even make the same sounds when attacking, being hit, sprinting, and coming out of the water. our character's are both males. maybe yours are female or i maybe i am experiencing a massive bug.