![]() The first need for a decibel system came about many years ago, when telephone companies were trying to measure losses and gains across power grids. Incidentally, decibels are also used to measure a large number of other logarithmic-based scales, such as power and voltage levels. The decibel system is a logarithmic system that is appropriate for exponentially variable sound levels. Your ears can hear everything from a light wind rustling through distant trees, to a loud jet engine, and they need to be able to process sounds appropriately. The decibel is the unit used to measure the intensity of a sound. This post is directly related to video #08 in my Audio Recording tutorial series, which is embedded below.Īlthough watching the video is the best way to learn about this topic, because of my illustrations on the whiteboard, I've also put a copy of the audio portion of that tutorial video on SoundCloud, for people who would like to download it to listen to in vehicles, while travelling, etc. Today, I have a post and video to delve more deeply into various decibel systems. I also have another post and video (numerically, the next in the series after this) that will talk about the Nyquist theorem, anti-aliasing, quantization noise, Fletcher-Munson curves, and dithering. That was part six of my Basic Audio Recording tutorial series on YouTube. ![]() Not long ago, I wrote a post and produced an associated video to teach people about sample sizes, sample frequency, binary, and how it all relates to sound. Decibel-based logarithmic measurement systems are confusing.
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