I go 4 fingers down from the collar on the front, and just under the front collar impression on the backside of the shirt. everyones fingers are different so I measured mine and the 4 fingers measure 3.5. I also use my left hand to guage where to put left chest logos.
Grey noise then, has a sound frequency that, if translated to a light frequency, would roughly be the color grey. Grey noise is a random sound that is distinguishable from other types of sound because it sounds the same, to the human ear, at all frequencies.
And if âpureâ white noise is just not relaxing enough, you can always try listening to rainfall, oceans, wind or other white noise sounds from nature. You can even buy purpose built white noise machines which have the option to play pure white noise, or different sounds from nature.here are many different options for listening to white noise. The easiest way is to just turn your television to an un-tuned channel, or turn your radio to a frequency with no signal. You can also get white noise machines â designed to play white noise or nature sounds.