npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

audify

v1.9.0

Published

Play/Stream/Record PCM audio data & Encode/Decode Opus to PCM audio data

Downloads

1,659

Readme

npm version Master Build Status Prebuilt Build Status

Audify.js

Audify.js - Play/Stream/Record PCM audio data & Encode/Decode Opus to PCM audio data

Features

  • Encode 16-bit integer PCM or floating point PCM to Opus packet using C++ Opus library.
  • Decode Opus packets to 16-bit integer PCM or floating point PCM using C++ Opus library.
  • Complete API for realtime audio input/output across Linux (native ALSA, JACK, PulseAudio and OSS), Macintosh OS X (CoreAudio and JACK), and Windows (DirectSound, ASIO and WASAPI) operating systems using C++ RtAudio library.

Installation

npm install audify

Most regular installs will support prebuilds that are built with each release.

Prebuilds are available for Node/Electron versions that support N-API 5-9.

Requirements for source build

Example

Opus Encode & Decode

const { OpusEncoder, OpusDecoder, OpusApplication } = require("audify");

// Init encoder and decoder
// Sample rate is 48kHz and the amount of channels is 2
// The opus coding mode is optimized for audio
const encoder = new OpusEncoder(48000, 2, OpusApplication.OPUS_APPLICATION_AUDIO);
const decoder = new OpusDecoder(48000, 2);

const frameSize = 1920; // 40ms
const buffer = ...

// Encode and then decode
var encoded = encoder.encode(buffer, frameSize);
var decoded = decoder.decode(encoded, frameSize);

Record audio and play it back realtime

const { RtAudio, RtAudioFormat } = require("audify");

// Init RtAudio instance using default sound API
const rtAudio = new RtAudio(/* Insert here specific API if needed */);

// Open the input/output stream
rtAudio.openStream(
  {
    deviceId: rtAudio.getDefaultOutputDevice(), // Output device id (Get all devices using `getDevices`)
    nChannels: 1, // Number of channels
    firstChannel: 0, // First channel index on device (default = 0).
  },
  {
    deviceId: rtAudio.getDefaultInputDevice(), // Input device id (Get all devices using `getDevices`)
    nChannels: 1, // Number of channels
    firstChannel: 0, // First channel index on device (default = 0).
  },
  RtAudioFormat.RTAUDIO_SINT16, // PCM Format - Signed 16-bit integer
  48000, // Sampling rate is 48kHz
  1920, // Frame size is 1920 (40ms)
  "MyStream", // The name of the stream (used for JACK Api)
  (pcm) => rtAudio.write(pcm) // Input callback function, write every input pcm data to the output buffer
);

// Start the stream
rtAudio.start();

Documentation

Full documentation available here.

Legal

This project is licensed under the MIT license.