Removing inter-sample correlation itself discards no information and stays lossless

Evidence

A signal redundancy removal stage, which removes any inter-sample correlations in the signal. In order to do this, the coder may have to send additional side information to the receiving end. This stage does not remove any information from the signal; it merely makes it more efficient and can therefore be considered to be lossless. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2585

Categorization

• DEFINE: Clarifies ‘lossless’ precisely: redundancy removal only reshuffles information, sending side information so nothing is lost.