This is a sound effect of a Wow. It’s a female voice. It contains several different intonations.

Nine versions are included full:

File A – wow (Version 1) 0:01
File B – wow (Version 2) 0:01
File C – wow (Version 3) 0:01
File D – wow (Version 4) 0:01
File E – wow (Version 5) 0:01
File F – wow (Version 6) 0:01
File G – wow (Version 7) 0:01
File H – wow (Version 0:01
File I – wow (Version 9) 0:01