Sones: Db !!link!!

: Sones are linear (2 sones is twice as loud as 1), whereas decibels are logarithmic (a 10 dB increase is a 10-fold increase in physical power). 1. Decibels: The Physics of Pressure

It supported path expressions, filtering, and projection. The parser compiled these queries into a traversal plan executed by the query engine. sones db