# DSP

## Overview

The dsp_demo sample project shows the DSP CFFT and CIFFT calculations and prints the results through the serial port.

## Board Setting

No special settings

## Running the example

When the project runs correctly, and the serial port terminal will output the following information:

```console
--------------------
after CFFT_RD2, maxdiff= 0x0080 [0.00390816]
--------------------
MAE is 0.00079375, RMSD is 0.00176055, NRMSD is 0.00005502, MAXDIFF is 0.00390816, SNR is 67.12823486
CFFT_RD2 out scaleup by 64
after CIFFT_RD2, maxdiff= 0x0009 [0.00029564]
--------------------
MAE is 0.00012192, RMSD is 0.00014900, NRMSD is 0.00007450, MAXDIFF is 0.00029564, SNR is 73.52618408
CIFFT_RD2 out scaleup by 2
CIFFT_RD2 PASS
```