Depending on which VI is used to quantize the coefficients of a floating-point single-rate filter, the configuration of some or all of the following items might be required: the gain settings, word length and integer word length, overflow mode, and rounding mode.

Use the DFD FXP MRate Quantization VI to quantize floating-point multirate filters. This process is different from quantizing floating-point single-rate filters.

In the fixed-point single-rate filter design process, scaling the filter coefficients is a separate step. However, the fixed-point multirate filter design process integrates this step in the quantization process. Specify an appropriate value in the scale type input of the DFD FXP MRate Quantization VI to scale the multirate filter coefficients.

To quantize the coefficients of a floating-point multirate filter, you only need to set the gain processing target and coefficients word length. The DFD FXP MRate Quantization VI automatically calculates the integer word length of the filter coefficients and configures the settings for the overflow and rounding modes. The VI then uses the resulting values to quantize the filter coefficients.