Block-based gain setting guarantees overload-free coding at the cost of side information

Evidence

Forward adaptive quantizers: Look at a block of the input signal and then set a scale factor that makes maximum use of the quantizer. This type of adaptive quantizer is guaranteed to be free from overload and is more robust to errors. However, it needs some side information-the scale factor-to be sent to the receive end, which clearly robs bits from the quantized signal samples. — David Howard, Jamie Angus, coustics and Psychoacoustics, 2659

Categorization

• DEFINE: Defines forward adaptation: measure the signal block first, then scale the quantizer to it.