Non-uniform quantizer spacing exploits masking and signal statistics to cut noise

Evidence

In order to make the reduction of information flow inaudible, it is best to use the characteristics of the human ear as an information receiver, and reduce the information flow for those events that are already inaudible. The effect of masking is a typical example. It can be introduced into the processing system in such a way that those parts masked by loud sounds are not transmitted to the receiver. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 2020 (#expands, via linked claim)

Categorization

• corroborated: 2 independent passages support this claim
• XREF: connects to: Quantization always injects noise that lowers audio signal-to-noise ratio — David Howard, Jamie Angus, coustics and Psychoacoustics, 2651; Loud-signal masking of weak signals enables bit-saving adaptive quantizers — David Howard, Jamie Angus, coustics and Psychoacoustics, 2657; Audio compression exploits masking to discard inaudible signal parts — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 2020 (+1 more)

Broader Connections

• Audio compression exploits masking to discard inaudible signal parts #expands (0.85) — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 2020