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AR# 22946

8.1 System Generator for DSP - Why does the output of my xFFT block appear to be incorrect, or what is the input format for the xFFT block?

Description

Why does the output of my xFFT block appear to be incorrect, or what is the input format for the xFFT block?

Solution

The input format for the xFFT block must be n.n-1, where n is the bit width. You can force the input to this format by using the Convert/Force Block. 

i.e. , 

Input Width = 16 bits 

Input Format = 16.15 format

AR# 22946
Date Created 09/04/2007
Last Updated 05/20/2014
Status Archive
Type General Article