When I was a tyke, I always thought that the red stick was like some sort of energy Magus formed. That's the reason why I thought it would make that kind of noise.
Then again, I am biased towards lightsabers. xD
Also, does anyone else find it lame that it's attack animation isn't as awesome as the Doom Sickle's? The Doom Sickle had that cool energy wave looking effect. The Dreamreaper is just basic scythe animation.