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

Eleven versions are included full:

File A – Mmm Expression (Version 1) 0:01
File B – Mmm Expression (Version 2) 0:01
File C – Mmm Expression (Version 3) 0:01
File D – Mmm Expression (Version 4) 0:01
File E – Mmm Expression (Version 5) 0:01
File F – Mmm Expression (Version 6) 0:01
File G – Mmm Expression (Version 7) 0:01
File H – Mmm Expression (Version 0:01
File I – Mmm Expression (Version 9) 0:01
File J – Mmm Expression (Version 10) 0:01
File K – Mmm Expression (Version 11) 0:01