@lodestream/waveform-samples-generator

Waveform Samples Generator

This is a thin wrapper around audiowaveform to parse audio files and generate sample data.

If you want more features or generate them on your own, just use the original audiowaveform and waveform-data.js.

Installation

1. REQUIRED: Follow this guide to install audiowaveform binary into your system.
2. Install this module:

npm install @lodestream/waveform-samples-generator

1. Use it like this:

const { parseFile } = require("@lodestream/waveform-samples-generator");

const start = async () => {
  const samples = await parseFile({ 
    // filePath: "./audio.mp3",
    url: "https://cdn.jsdelivr.net/gh/lodestreams/waveform-samples-generator@2254b8235c0cd82a482fb2bf7b7404c8fb0df560/docs/test.mp3"
    sampleRate: 10
  });
  // See /src/@types/waveform-data/index.d.ts for detailed schema of `samples`
  console.log(JSON.stringify(samples.max));
};

start();

If your want to draw waveforms out of it, use samples.max, it's an array of points.

Play with this repo

Print out samples (array):

ts-node --files src/scripts/parser.manual.ts
# [2,2,2,3,2,2,3,2,3,2,3,3,3,5,4,4,4,2,...

Play the waveform! Watch it dancing!

ts-node --files src/scripts/player.manual.ts