Yes, it's the same Hooverphonic, but your album is their first, out of 1996 and when Noemie Wolfs came at Hooverphonic, is since 2011.
So between those years the make musical grow and if you listen to their other albums, you will recognixe the grow.
At "A New Hooverphonic Sound Spectular" is the music overall experimental, like a mix of trip hop, classical music and indie pop.
Nowadays it sounds more mainstream, with more pop, with jazz and classical influence.
I've their first album under the name Hoover, that was their name before they changed it, because of authorrights, in Hooverphonic.
Noemie is their 5th female singer, before there were Liesje Sadonius, Kyoko Baertsoen, Esther Lybeert and Geike Arnaert, just in that order, Geike sing for more than 15 years at Hooverphonic.
For me is Geike's voice, the voice of Hooverphonic, but she's trying to take care of her own career.
The boys of Hooverphonic find with Noemie Wolfs the voice the were looking, since they've started Hooverphonic, they say.
Noemie's voice is more flexible and fits more with the musical style they try to reach for.
I'm fine with it, as long as they make their own style of music.