In this paper, it puts forward originally the human aural comfort threshold definition of objective evaluation and it has directive significance to design and develop aural comfort in the instant the door closes. tinnitus (sounds such as ringing, buzzing or rumbling in the ear) a feeling of pressure or fullness in the ear. And it theoretically deduces to the minimum closing door speed, the Y-direction projection area, vehicle air leakage, cross-sectional area of the vehicle, decompression air vent ventilation area relationship with the aural pressure fluctuation inside the car, and the objective test data supports completely the validity of the deduction. Bass pressure pushes equal and opposite on both sides of the double membrane trap at the same time, which is why it does not transfer momentum to the wall it is attached to. In this paper, through a large number of objective test and subjective evaluation of the vehicles, and it is systematically studied the relationship between leakage under positive pressure and aural discomfort during closing door.

The studies for closing door quality are more, but the studies for aural discomfort are very little. Older children will complain of ear pain or a headache. Applying pressure by compressing the bulb increases the pressure at the level of ear drum pushing it inside. Rubber bulb which is used to create pressure differential at the level of ear drum. Securing tape USD383545S (en) : : Doyle Donald E: External ear dressing US6502532B2. Components of Siegels pneumatic speculum: 1. Ear pressure dressing US5397639A (en) : : Tollini Dennis R. With the improvement of the vehicle leakage performance, the aural discomfort phenomenon appeared during closing door. When the infection spreads to the ear, and the pressure on the eardrum builds, other symptoms appear. An aural dressing having a flexible body formed of open cell material.

Aural pressure