Representation: quantize, deadzone

• Quantization takes input values and maps then to output values, based on particular threshold levels.
• When there is no deadzone, values are often just truncated from the real number to an integer, so once a level of 1.0 is achieved, the output is 1.
• With a deadzone, a zero output may be produced for larger values on the input, to avoid recording noise. In this example the input level must be at least two before a positive output is produced.
• Quantization is often linear, but can be non-linear, such as using a logarithmic scale (that matches human perception of audio). Thus, output might be a logarithmic function of the input, so an increase of one on the output might correspond to a doubling of input amplitude.