@trackr/effects-gain/lib/vibrato.js

A subpackage of trackr that contains gain effects.

export const vibrato = (options) => {
    return (audioContext, eo) => {
        const vibratoNode = audioContext.createGain();
        audioContext.createOscillator();
        if (options) {
            if (eo.instrument instanceof OscillatorNode) {
                vibratoNode.gain.value = options.value;
                vibratoNode.connect(eo.instrument.detune);
                var lfo = audioContext.createOscillator();
                lfo.connect(vibratoNode);
                lfo.frequency.value = options.frequency;
                lfo.start(eo.startTime);
                lfo.stop(eo.endTime + eo.duration);
            }
        }
        // eo.latestSource.connect(adsr);
        return vibratoNode;
    };
};