string-fingerings/dist/types.d.ts

Utilities for calculating fingerings on string instruments

/** Represents a single fingering, either stopping or touching the string with one finger. */
export interface StopCalculationData {
    /** The string index in the instrument (0 = first string, etc.) */
    stringIndex: number;
    /** The stepIndex (number of semitones over the open string) */
    stopIndex: number;
}
/** Represents a single fingering, either stopping or touching the string with one finger. */
export interface Stop extends StopCalculationData {
    /** The MIDI note number (middle C = 60) */
    noteNumber: number;
    /** Is it touch fingering? */
    naturalHarmonic: boolean;
}
/** Represent a string in a string instrument */
export interface InstrumentString {
    /** String name, typically the open string note name or a roman number */
    name: string;
    /** Open string note as a MIDI number (middle C = 60) */
    openNote: number;
}
/** Represent a string instrument */
export interface Instrument<TString extends InstrumentString> {
    /** Name of the instrument */
    name: string;
    /** If it is a transposing instrument, number of semitones to add to get the written note. */
    transposition?: number;
    /** Maximum number of semitones that can be stopped over the open string */
    stops: number;
    /** Length of the vibrating part of the open string */
    scaleLength: number;
    /** Length in mm of a hard stretch (distance between fingers) */
    hardStretch: number;
    /** Maximum stretch length in mm */
    maxStretch: number;
    /** Strings of the instrument  */
    strings: TString[];
}
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