I'm trying to gauge what the different levels of volume these fans i'm looking to purchace put out. Can someone give me an idea as to the ammount of difference between 25 & 32 dB is? <P>thanks ...

We live in a noisy world, from traffic and aircraft congestion to construction sites, TV shows, and many other sources. But understanding dB measurements can help, as we will soon see. Noise is an ...

Establishing and keeping to a standard audio level, especially in studios, has been a problem since the first radio station went on the air. Back in the 1960s, audio console output levels were usually ...