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Real FFT(ADAU145x)

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Real FFT is a block processing module which computes the FFT of real signals

Input Pins

NameFormat [int/dec/float] - [control/audio]Function Description
Pin 0: Input decimal-audioInput signal to the module

Output Pins

NameFormat [int/dec/float] - [control/audio]Function Description
Pin 0: Output complex-audioOutput signal from the module

Grow Algorithm

Add and Growth are not supported.

GUI Controls

GUI Control NameDefault ValueRangeFunction Description
Normalize Input (Global Setting) EnabledEnabled/DisabledThis is a global setting which determines whether the input is normalized

DSP Parameter Information

GUI Control NameCompiler NameFunction Description
splitCoeffsARealFFTBlkAlgsplitCoeffsASine coefficients
splitCoeffsBRealFFTBlkAlgsplitCoeffsBCosine coefficients

Algorithm Description

This module computes the FFT of Real input signals. Since FFT of real signals has complex conjugate symmetry, only first half of the FFT output is computed. Input and output blocksizes are the same for this module.


In the example shown below, complex magnitude of the FFT outputs of Real Inputs 1 and 2 are computed.

Supported IC's

1. ADAU145x

resources/tools-software/sigmastudio/toolbox/frequencydomain/fft.1521010720.txt.gz · Last modified: 14 Mar 2018 07:58 by Ashwin Radhakrishnan