import { AbsoluteNote } from '../note/absolute-note';
/**
 * Describes the motion between two voices
 */
export declare enum Motion {
    /**
     * Two voices moving up or down together by the same diatonic distance
     */
    PARALLEL = 0,
    /**
     * Two voices moving up or down together by different distances
     */
    SIMILAR = 1,
    /**
     * One voice moving and one voice remaining the same
     */
    OBLIQUE = 2,
    /**
     * Voices moving in opposite directions
     */
    CONTRARY = 3
}
export declare namespace Motion {
    const names: string[];
    function toString(motion: Motion): string;
    function fromString(motion: string): number;
    function from(lowerPrev: AbsoluteNote, lowerNext: AbsoluteNote, upperPrev: AbsoluteNote, upperNext: AbsoluteNote): Motion;
}