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Size: 630 Bytes
Versions: 21
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Stored size: 630 Bytes
Contents
# frozen_string_literal: true
# A tuning has a reference pitch and frequency and provides frequencies for all pitches
# The base class assumes equal temperament tuning. By default, A4 = 440.0 Hz
class HeadMusic::Tuning
attr_accessor :reference_pitch
delegate :pitch, :frequency, to: :reference_pitch, prefix: true
def initialize(reference_pitch: :a440)
@reference_pitch = HeadMusic::ReferencePitch.get(reference_pitch)
end
def frequency_for(pitch)
pitch = HeadMusic::Pitch.get(pitch)
reference_pitch_frequency * (2**(1.0 / 12))**(pitch - reference_pitch.pitch).semitones
end
end
# TODO: other tunings
Version data entries
21 entries across 21 versions & 1 rubygems