Converts from Hz to semitones above C0 (~16.4 Hz). This may not seem very
useful, but note that (1) this gives you a nice logarithmic scale for
generating natural pitch transitions, (2) with the added benefit of getting
musical notation for free from notesDict (see examples).
# NOT RUN {s = HzToSemitones(c(440, 293, 115))
# to convert to musical notationnotesDict$note[1 + round(s)]
# note the "1 +": semitones ABOVE C0, i.e. notesDict[1, ] is C0# }