MUSI 3702 Lecture Notes - Lecture 17: Digital Recording, Analog Recording
25 May 2016
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Document Summary
Benefits of discrete messages as opposed to continuous ones overview of why digital audio took over for the most part in music recording, storage, and reproduction. Filtering: losing a certain amount of high frequency information. 20-20,000 hz: human hearing range is 20-20000hz, sampling rate has to be twice the maximum frequency of the signal to be recorded, therefore it has to be greater than 40khz. Talk about the effect of bit depth as the other major parameter of a sampling system: 16 bit samples almost no error correction. If sample & hold is triggered once, it will be one voltage forever. Sample will be where information was at that moment, everything else in time domain is lost since it was triggered only once. But information in the y axis is not lost at all. Once you have the stream of bits, no information is lost when stored in digital file.
