Cool Edit Pro?s Brainwave Synchronizer can produce files that, when listened to with stereo headphones, will put the listener into any desired state of awareness. For example, by listening to ?brainwaved? files, you can achieve states such as deep sleep, theta meditation, or alpha relaxation. Because of the nature of this function, it only works on stereo waveform data, and to be effective, it must be listened to with stereo headphones.
The Brainwave Synchronizer function spatially locates the audio left and right, in a circular pattern over time. In order to spatially encode the signal, either the left or right channel is delayed so that the sounds will appear at each ear at different times, tricking the brain into thinking they are coming from either side. When this is done at frequencies of 3Hz and above, the brain will start synchronizing at the same frequency, increasing its output of Delta, Theta, Alpha, or Beta frequencies.