             baseTuning[i] *= 2.0
         }
         
-        // Go up til Gb and go down after G
+        // Go up till Gb and go down after G
         let indexBoundary = 6  // index of Gb
         let indexOfTranspositionNote = sounds.indexOf(transpositionNote)
         if (indexBoundary < indexOfTranspositionNote) {

    private class func pureBase(info: TuningInfo, centOffsets: [Float]) ->[SoundName: Float] {
        var tuning = [SoundName: Float]()
        let soundNames = self.arrangeSoundNamesForRootSound(info.rootSound)
        // 平均律をベースに演算
        let tuningEqualBase = self.equalBase(info.pitch, transpositionNote: info.transpositionNote)
        
        for i in 0..<soundNames.count {

            tuning = self.pureMajorByInfo(info)
        case TuningType.PureMinor:
            tuning = self.pureMinorByInfo(info)
//        case TuningType.Pythagorean:
//        case TuningType.UserDefined:
        default:
            print("Unexpected tuning type: \(info.tuningType)")
        }
