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Digital audio relies completely on the accuracy of quantization and it is important to see how it works.
When the pandemic began shutting down TV stations in the spring of this year, journalists and producers were left to figure out how to work from home and set up technical systems they were very unfamiliar with. In many cases panic set in.
Among a number of things, the pandemic has accelerated product development timelines for remote production and the migration to virtualized IP infrastructures, supporting the ability to produce content remotely and stay socially distanced. Many of these new tools were already in place but were often still in early stages, and some were cobbled together nearly on the fly as broadcasters coped with the careful return of live sports.
Digital audio relies completely on sampling and no treatment of the subject can be complete without looking at how it works.
Digital audio has a remarkably short history, but apart from a few enthusiasts of legacy technology, the takeover has been total.
It seems almost superfluous today to specify that audio is digital because most audio capture, production and distribution today is done numerically. This was not always the case and at one time audio was primarily done without the help of numbers and the term digital audio was introduced to distinguish the new technology from what went before.
There is level and then there is loudness. Neither can be measured absolutely, but by adopting standardized approaches it is possible to have measurements that are useful.
There are two basic reasons to know the level of an audio signal. One of these is more technical and one of them is more subjective.