The delay slider sets the phase difference between the two signals so that you can see how they combine at different times which is equivalent to moving the microphone closer or further from the sourc...The delay slider sets the phase difference between the two signals so that you can see how they combine at different times which is equivalent to moving the microphone closer or further from the sources. In the previous example you should have heard a beat frequency of 1 Hz for the 201 Hz plus 200 Hz combination but a 2 Hz beat frequency for the 201 Hz signal added to the 400 Hz signal.
