Quantizer (Simulink Reference)

Discretize input at a specified interval

Library

Discontinuities

Description

The Quantizer block passes its input signal through a stair-step function so that many neighboring points on the input axis are mapped to one point on the output axis. The effect is to quantize a smooth signal into a stair-step output. The output is computed using the round-to-nearest method, which produces an output that is symmetric about zero.

```
y = q * round(u/q)
```

where y is the output, u the input, and q the Quantization interval parameter.

Data Type Support

A Quantizer block accepts and outputs real or complex signals of type single or double.

Parameters and Dialog Box

Quantization interval: The interval around which the output is quantized. Permissible output values for the Quantizer block are n*q, where n is an integer and q the Quantization interval. The default is 0.5.
Treat as gain when linearizing: Simulink by default treats the Quantizer block as unity gain when linearizing. This is the large signal linearization case. If you clear this box, the linearization routines assume the small signal case and set the gain to zero.

Characteristics

Direct Feedthrough
Yes

Sample Time
Inherited from driving block

Scalar Expansion
Of parameter

Dimensionalized
Yes

Zero Crossing
No

Direct Feedthrough	Yes
Sample Time	Inherited from driving block
Scalar Expansion	Of parameter
Dimensionalized	Yes
Zero Crossing	No

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