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Tried unplugging everything audio and my perception of the noise floor actually increased. I now hear outside traffic, airplanes overhead, my refrigerator that is still plugged in for obvious reasons, even the gas fireplace makes a bit of high frequency noise. Plus my laptop fan has a continuous air-flow sound which is less obvious when the forced air heat comes on. Also, it allows the wife to express her opinions on a multitude of subjects.
So, I think you are in error, as the stereo in play actually lowers my noise floor. I think this phenomenon is known as masking.
Tried unplugging everything audio and my perception of the noise floor actually increased. I now hear outside traffic, airplanes overhead, my refrigerator that is still plugged in for obvious reasons, even the gas fireplace makes a bit of high frequency noise. Plus my laptop fan has a continuous air-flow sound which is less obvious when the forced air heat comes on. Also, it allows the wife to express her opinions on a multitude of subjects.
So, I think you are in error, as the stereo in play actually lowers my noise floor. I think this phenomenon is known as masking.