Paul DaviesBroadcast Systems ManagerDolby Laboratories, Inc.
2.2 Non-linear Audio Systems
Non-linear Audio Systems are those systems which encode audio to reduce the data rate, allowing the signal to pass through a network or system at that lower data rate, whilst allowing as complete as possible a recovery of the audio on decoding. This usually involves taking a linear PCM signal and processing it to remove certain components of the signal. The components to be removed are determined by the coding scheme employed. There are typically two types of coding systems existing that are in everyday usage, namely lossy and lossless coding. As their descriptions indicate, the lossless coding systems use techniques to pack the data more efficiently, ...
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