It sounds like you're trying to use the pad as a gate. A gate is an electronic device, which can be a stand alone unit or a feature of a preamp, which basically turns off the mic's input unless it receives a signal at or above a preset threshold, which is usually adjustable. This can help if you have low level background noise, so during quiet sections where you're not singing or playing, you won't pick up that hockey game. Of course, as soon as you do play, you're going to hear yourself, and every so often, in the background, you'll hear "SCORE!!!!". Try getting your roomate some headphones. Loud background noise sucks when recording. Consider building a vocal booth to attenuate your roomate, assuming you can't just put Chloral Hydrate in your roomate's coffee.-Richie