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

speex-resampler

v3.0.1

Published

An WebAssembly implementation of Speex audio resampler

Downloads

23

Readme

Speex Resampler

This lib exposes the Speex resampler to Javascript with WebAssembly. It doesn't have any dependancy and support NodeJS or a WebContext. Typescript typings are also provided.

From speex creator, the design goals of the resampler are:

  • Very fast algorithm
  • SIMD-friendly algorithm
  • Low memory requirement
  • Good perceptual quality (and not best SNR)

How to use

await SpeexResampler.initPromise; // will be resolved once the WASM module has been compiled, before this you cannot call the SpeexResampler processChunk method

const channels = 2; // minimum is 1, no maximum
const inRate = 44100; // frequency in Hz for the input chunk
const outRate = 44000; // frequency in Hz for the target chunk
const quality = 7; // number from 1 to 10, default to 7, 1 is fast but of bad quality, 10 is slow but best quality
// you need a new resampler for every audio stream you want to resample
// it keeps data from previous calls to improve the resampling
const resampler = new SpeexResampler(
  channels,
  audioTest.inRate,
  audioTest.outRate,
  audioTest.quality // optionnal
);

const pcmData = Buffer.from(/* interleaved PCM data in signed 16bits int */);
const res = await resampler.processChunk(pcmData);
// res is also a buffer with interleaved signed 16 bits PCM data

You can look at the src/test.ts for more information.

Test music by https://www.bensound.com