Reason 4.0 enables you to make all kinds of edits and create effects for the audio you record and edit with the program. One of these effects is to create a "sweep" in your track. You can achieve this effect by using a noise oscillator. There are many options for noise oscillators. The one used in this example is the low bypass filter version, which produces the richest noise available. This video will show you how to add a "sweep" effect in Reason 4.0 by using a noise oscillator.