Causes of Rib Cage Pain. The most common causes of rib cage pain are a pulled muscle or bruised ribs. Other causes of rib cage pain are: 1  broken ribs. 2  injuries to the chest. 3  rib fracture. 4  diseases that affect the bones, such as osteoporosis. 5  inflamed lining of the lungs. 6  muscle spasms. 7  inflamed rib cartilage.ther causes of rib cage pain are: 1  broken ribs. 2  injuries to the chest. 3  rib fracture. 4  diseases that affect the bones, such as osteoporosis. 5  inflamed lining of the lungs. 6  muscle spasms.
In electronics and communications, the decibel (abbreviated as dB, and also as db and DB) is a logarithmic expression of the ratio between two signal power, voltage, or current levels.
The decibel (abbreviated dB) confuses many people, perhaps because they assume it is an absolute unit or level of sound. The dB is not a unit in the sense that a metre or a kilogram are well-defined units of distance and weight.A decibel is the relationship or ratio between two sound levels, for example the measured sound pressure level and the minimum sound pressure level a person with good hearing can detect.imilarly if we had doubled the sound power i.e. two machines, then the measured increase would only be 3 dB. In the first case we had 10 times as much power and the log of 10 is 1 bel or 10 dB. Similarly twice as much power or a factor of 2 gives a log of 0.3 bels or 3 dB.