during cost analysis you will also compare the proposed cost elements with i actual costs ii previous cost estimates for same or similar work iii other cost estimates iv independent government estimates and v forecasts of planned expenditures
How Decibels Apply to Music and Sound. In music, decibels are a measurement of Sound Pressure Level (SPL). When we say the speakers at a rock concert are playing at 110dB, what we really mean is that theyâre playing at 110dB SPL. Since the decibel is only a ratio, 110dB is actually a comparison to a different number: 0 SPL.
| 0 Comments. Decibel is a logarithmic unit of measurement that expresses the magnitude of a physical quantity; it is used to measure sound level among others. If you are having a normal conversation then you are producing 60-70 decibels, if you are in a loud rock concert, the sound reaches up to 125 decibel.