Sound Technique
From wikibooks:
This method is for people, who can hear the “tinnitus“. The idea is pretty much the same as the other WILD methods, which is to remain conscious while entering the dream state. In order to use this method, you must sleep in a perfectly quiet place. You need that to hear the tinnitus, which is the inner sound buzzing inside your ears. Lay your body down and relax as much as possible while trying to hear the sound. This method is best combined with the other trigger, such as sleeping for 4-6 hours, waking up and trying this technique. When you are too tired, usually you fall asleep too fast and it‘s difficult to remain conscious. By time you realize that the buzzing sound will increase in intensity. This might frighten newcomers, but be assured - nothing bad is going to happen. No, you will not be deaf when you wake up, it’s perfectly safe! It is just an effect caused by your brain is trying to change mode, from listening to the ambient sound, to listening to the sound of dreamland, which is not real sound but just electrical charge inputed to the part of the brain to create a sensation of hearing. By that time, you will enter the hypnagogic state. All you need to do is concentrate, do not be afraid or think of anything, just be still, and in time your dream body will float, separating from your physical body, and there you go, you arrive in the dreamworld.

Does anyone work with this technique?