1 Pixel density: Pixel density-The pixel density of a display represents the number of pixels over an area of one inch. 2  Itâs measured in âpixels per inchâ, or ppi.
Eustachian Tube Dysfunction can be caused by large adenoids, allergies, or a cold. This dysfunction can cause crackling or popping noises in our ears. The tube is lined with moist mucosa, and inflamed Eustachian tubes often get sticky, which causes the crackling and popping noises when the tubes are moving around. If the inflammation is serious, it can be easily treated with steroid nasal sprays.
Also, can't hear the whooshing when I plug my ears. Jan 3, 2015. #1. dan Member Tinnitus Since: 06/2011. hello, it is pulsatile tinnitus caused by blood turbulence in your ears. nothing to worry about...maybe check your blood pressure, otherwise if normal maybe get some exercise, better diet, etc.