New spectrums should not be added to the spectrogram, while Logarithmic property is checked. Calling Pull method while Logarithmic property is True, will raise an exception. It is possible however to toggle the value of the Logarithmic property. Changing the value of this property immediately triggers conversion. 

The value of the LogSpan property will be used as a parameter in the conversion. Logarithmic property can not be used, if incoming spectrums already have logarithmic scale: logarithmic scale can not be undone, because exact parameters on how it was applied are not known. 

All spectrum analysis methods from Peaks, Bands and Reports properties will comply with the value of the Logarithmic property.

TSpectrogram Properties