Understanding the basics of why the decibel system was created:

Forms of wire make a big difference in sound travel. Some wires lose strength depending on their length. A good example would be to notice how even wireless signals have a maximum distance of service. In the creation of communication devices, many well known telephone engineers realized that sound had limits and needed to be understood. The decibel system was invented to measure the capabilities of many different types of wire materials in which sound travels. Although it is one step in measuring sound levels, it is not the only way to measure each section of the sound spectrum. A good example would be frequency; which, is measured in hertz. As you advance in audio engineering and manipulation, you will notice that there are so many different ways to measure the levels that pertain to audio. The decibel system is just the basics.