Just to confirm, have you enable beam-forming in mic properties?
go to sound control panel, select recording devices, then highlight your soundblaster and right click to properties and find enhancement tabs. alternatively you might also want to try "setup microphone" inside windows. im not sure what it is named in windows 8, but in windows 7 that's what you need to type inside the start search box.
Like what I wrote above, go to control panel, sound, then select recording devices and go to its properties.. there will be a checkbox on something like beamforming. if you have difficulties, just type sound in the windows 8 desktop.. then take it from there.