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Contents
# frozen_string_literal: true
module Coltrane
module Theory
class Frequency
include Comparable
attr_reader :frequency
def initialize(frequency)
@frequency = frequency.to_f
end
def <=>(other)
to_f <=> other.to_f
end
class << self
alias [] new
end
def to_s
"#{frequency}hz"
end
def to_f
frequency
end
def octave(n)
Frequency[frequency * 2**n]
end
def ==(other)
frequency == (other.is_a?(Frequency) ? other.frequency : other)
end
def octave_up(n = 1)
octave(n)
end
def octave_down(n = 1)
octave(-n)
end
def /(other)
case other
when Frequency then FrequencyInterval[1200 * Math.log2(other.frequency / frequency)]
when Numeric then Frequency[frequency / other]
end
end
def method_missing(method, *args)
Frequency[frequency.send(method, args[0].to_f)]
end
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems