Are you familiar with the disclaimer about measurement scales not being supported? It's mentioned at the end of the tutorial in the documentation.

I did see that, and I understood that for a unit like degrees of temperature, there is a policy that the package would support the value and units of a temperature measurement, but not a reference value. I assume that you are saying that because Decibels require referencing the difference between two values, they are not supported?

Just to clarify my last question: temperatures have a value, units, and an implied absolute reference (e.g. -273.15 degrees C == 0 degrees K). Measurements in Decibels have a value, units, and are implicitly relative to another value in Decibels which is not absolute. I'm assuming from your answer that the policy is that values that require another value for interpretation, whether it is absolute or relative, are not supported. Is that correct?

I guess I am not familiar enough with the units you are talking about, and how they are used and what operations on them need to be supported, to feel comfortable including them in the package at this time.