@function type-scale($level) {
  $scales: (
    minor-second: 1.067,
    major-second: 1.125,
    minor-third: 1.200,
    major-third: 1.250,
    perfect-forth: 1.333,
    augmented-forth: 1.414,
    perfect-fifth: 1.500,
    goldern-ratio: 1.618
  );
  $chosenScale: map-get($scales, $base-scale);
  @return pow($chosenScale, $level) + rem;
}