Frequency Response
Description
The signal processing block Frequency Response calculates the Fast Fourier Transform of an input.
Input
The input is MxN.
Output
The output is KxN which is the FFT of the input signal MxN. The size K is dependent on the mode and number
of points of the FFT.
Attributes
| Attribute | Value |
|---|---|
| Name | FFT |
| Mode | Full |
| Points | ☐ 8192 |
| Window | Rectangle |
| Overlap | ☐ 0 |
| Channels | 1 |
Values with ☐ can receive external input.
Name
Name specifies the name of the block.
Mode
Mode specifies the output of the FFT. The mode can either be Full which produces the full point FFT, or Half
which produces a N/2-1 point FFT multiplied by two to give the correct level.
Points
Points is the number of points in the FFT.
If the number of points is larger than the inputs M, the input M is zeropadded. If the number of points is lower
than the inputs M then an average of multiple FFT's is calculated.
Window
Window species the windowing used in the FFT. This can be chosen to one of the following:
Barthann, Bartlett, Blackman, Blackmanharris, Bohman, Boxcar, Cosine, Flattop, Hamming, Hanning, Nuttall, Rectangle, Triangle.
Overlap
Overlap specifies the overlap in points if multiple FFT are calculated.
Channels
Channels specifies the number of input(s)/output(s) the block will have.