Noise Remover
The Noise Remover effect lets the user attenuate the noise sound of a certain frequency based on the Fast Fourier Transformation. If you select a part of the file with the mouse, this effect will be applied to this exact part of the file. Otherwise the sound of the whole file will be altered.
In the Properties Window you can change the effect properties. It's possible to select the necessary preset from the dropdown list or set a custom Reduce value and select one of the available FFT (Fast Fourier Transformation) options.