Digital Representation
Eddy B. Brixen · Focal Press eBooks · 2020
Digital audio technology takes the starting point in the transformation of an analog signal to numerical values at an appropriate rate. Advantages of digital audio technology include error correction, which allows for the execution of copying and transmission in a lossless manner – further, calculations in the digital domain substitute what otherwise would imply physical, electronic circuitry. Generating code sample-by-sample is called pulse-code modulation or pulse code modulation, which relates to digital audio applying linear quantization, for instance, on a Compact Disc. The number of bits per sample and the sampling rate are factors for the quality of digital audio. In both cases, the higher the better. However, for some purposes, like sound transmission over the Internet, it may not be possible to transfer the number of bits per second required for linear high-quality audio within a reasonable amount of time.