pt 

ro 

Fft (TCustomSpectralEffect32)

FFTOrder (TDspSampleRateFftPersistent)

ro 

FFTSize (TDspSampleRateFftPersistent)

SampleRate (TDspSampleRatePersistent)

pt 

ro 

UpdateCount (TNotifiablePersistent)

WindowFunctionClass (TCustomSpectralFilter32)