waveform-playlist/src/utils/conversions.js

Multiple track web audio editor and player with waveform preview

'use strict';

export function samplesToSeconds(samples, sampleRate) {
    return samples / sampleRate;
}

export function secondsToSamples(seconds, sampleRate) {
    return Math.ceil(seconds * sampleRate);
}

export function samplesToPixels(samples, resolution) {
    return ~~(samples / resolution);
}

export function pixelsToSamples(pixels, resolution) {
    return ~~(pixels * resolution);
}

export function pixelsToSeconds(pixels, resolution, sampleRate) {
    return pixels * resolution / sampleRate;
}

export function secondsToPixels(seconds, resolution, sampleRate) {
    return Math.ceil(seconds * sampleRate / resolution);
}