frequency property

double get frequency

Calcula a frequência em Hz (A4 = 440Hz)

Implementation

double get frequency {
  const a4MidiNumber = 69; // A4
  const a4Frequency = 440.0;
  final midiDifference = midiNumber - a4MidiNumber + (alter - alter.round());
  return a4Frequency * (2.0 * (midiDifference / 12.0));
}