decibels aren't only used with reference to sound. For instance, I often use Vdb in the spectrum analyzer if subsequent harmonics are not linearly visible. dec

decibels aren't only used with reference to sound. For instance, I often use Vdb in the spectrum analyzer if subsequent harmonics are not linearly visible. decibels are just a way to easily express ratios on a logarithmic scale. It's handy for all sorts of things.