The sound must be recorded.
Sound Recorders for Video
For all practical purposes, analog recording is no longer used for video productions; virtually all of the video recorders and camcorders sold today are digital. For the video production person these will be the primary recording devices for both picture and sound. Most of the concepts you learned for digital video also apply to digital audio. Terms like sampling rate, quantizing, processing levels, compression, A to D converters, and D to A converters also apply to audio. There are specific differences, of course. For digital video we use high sampling rates (in the megahertz range) and relatively low processing levels (8- or 10-bit processing). For digital audio it is the opposite: low sampling ...
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