[AngelBee]

I don't recall being aware of this sound myself, in meditation or otherwise ...but on the other hand its possible I might have forgotten about it.

This might be helpful:



THE SOUND OF SILENCE


As you calm down you can experience the sound of silence in the mind. You hear it as a kind of high frequency sound, a ringing sound that's always there. It is just normally never noticed. Now when you begin to hear that sound of silence, it's a sign of emptiness - of silence of the mind. It's something you can always turn to. As you concentrate on it and turn to it, it can make you quite peaceful, blissful. Meditating on that, you have a way of letting the conditions of the mind cease without just supressing them with another condition. Otherwise you just end up putting one condition over another.

This process is what is meant by making 'kamma'. For example, if you're feeling angry, then you start thinking of something else to get away from the anger. This is just putting one condition on top of another. You don't like what is going on over here, so you look over there, you just run away. But if you have a way of turning from conditioned phenomena to the unconditioned, then there is no kind of kamma being made, and the conditioned habits can fade away and cease. It's like a 'safety hatch' in the mind, the way out, so your kammic formations, (sankharas), have an exit, a way of flowing away instead of re-creating themselves.

One problem with meditation is that many people find it boring. People get bored with emptiness. They want to fill up emptiness with something. So recognise that even when the mind is quite empty, the desires and habits are still there, and they will come and want to do something interesting. You have to be patient, willing to turn away from boredom and from the desire to do something interesting and be content with the emptiness of the sound of silence. And you have to be quite determined in turning towards it.


continued here:
http://amaravati.org/abm/english/doc..._is/12sos.html