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.
What Can Be Measured By The Decibel Scale. The decibel scale can be used to measure audio in a variety of different ways. The decibel can be used to measure sound pressure level, sound intensity level, voltage level and power, just to name a few. This provides a valuable reference tool for the audio engineer, technical engineer, and the audio equipment designer.