Floating-Point to Fixed-Point Conversion

Algorithm and model conversion

Topics

System Objects Supported by Fixed-Point Converter App
Use the Fixed-Point Converter app to automatically propose and apply data types for commonly used system objects.
Convert dsp.FIRFilter Object to Fixed-Point Using the Fixed-Point Converter App
Convert a dsp.FIRFilter System object™, which filters a high-frequency sinusoid signal, to fixed-point using the Fixed-Point Converter app.
Specify Fixed-Point Attributes for Blocks
Teaches you how to specify fixed-point attributes and parameters in software on both the block and system levels.
Convert Floating-Point Model to Fixed Point (Fixed-Point Designer)
Use the Fixed-Point Tool to convert a floating-point model to fixed point.
Iterative Fixed-Point Conversion in Simulink (Fixed-Point Designer)
Floating-point model conversion to fixed point using a guided workflow

Featured Examples

Floating-Point to Fixed-Point Conversion of IIR Filters

Use the Fixed-Point Converter App to convert an IIR filter from a floating-point to a fixed-point implementation. Second-order sections (also referred as biquadratic) structures work better when using fixed-point arithmetic than structures that implement the transfer function directly. We will show that the surest path to a successful "float-to-fixed" conversion consists of the following steps:

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