Functions related to tunings, based on the Scala scale file format.
Creates a tuning using a Scale scale file. See http://www.huygens-fokker.org/scala/scl_format.html for more information.
(pch->freq tuning [oct scale-degree])
Convert a pch (i.e. [oct scale-degree]) to frequency using the given tuning. Octave of 8 is interpreted as equal to the base frequency of the tuning.