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In Part 1 we looked at why sound is important, how we measure Sound Pressure and level, and how we measure Frequency, which describes the variation in sound pressure. In this second part we look at the remaining two important ways of measuring sound, Sound Sources and Sound Power.
Understanding the underlying physics of sound, where it is generated and attenuated, how we measure it, and the impact it has on us, is an important part of being able to design the right air movement systems and select the correct products.
In many markets, system designers demand fans that develop higher pressures than our single stage JM fan can deliver. In these cases in the past, we have offered our customers 2 stage fans as a solution. This is not only physically larger but also a more expensive solution.