`TCustomSimpleBandlimitedImpulseTrain`
pt		FrequencyChanged
pt		BufferSizeChanged
		Create
		Reset

`TDspSampleRatePersistent`
pt		SampleRateChanged
pt		AssignTo
		Create

`TDspPersistent`

`TNotifiablePersistent`
pt		AssignTo
		Changed
		BeginUpdate
		EndUpdate