Type Alias MelodicContour

The abstract shape of a line: its step directions and what they add up to.

type MelodicContour = {
    directions: ContourDirection[];
    shape: MelodicContourShape;
    peakIndex: number;
    troughIndex: number;
    range: number;
    rationale: string;
}

Properties

One direction per adjacent pair of notes, in time order.

What the directions add up to.

peakIndex: number

Index of the highest note; ties keep the earliest, and -1 for a line with no notes.

troughIndex: number

Index of the lowest note; ties keep the earliest, and -1 for a line with no notes.

range: number

Semitone distance from the lowest note to the highest.

rationale: string

Why the line was given that shape.