![]() Initialize the Superpowered WebAssembly with passing your license details (and WASM location is you are running in production).To load Superpowered into your Javascript application, the following steps should take place in order: Behind the scenes, you'll still have a standard AudioContext which you can use elsewhere in your application if required. This extended AudioContext offers useful tools to make sure you can get audio in and out of Superpowered efficiently and with ease across browsers. Starting SuperpoweredĪlthough Superpowered can be loaded into an existing audio context, we recommend your application's main AudioContext is created by the method we provide in the SuperpoweredWebAudio helper class. To run Superpowered in production, you will need to host these two file yourself and not utalise the CDN. ![]() However, note that this is the evaluation version of the Webssembly and is hardwired to use the evaluation license key. To streamline the evaluation of Superpowered, a CDN hosted copy of the libraries WebAssembly is automatically fetched at runtime. Superpowered requires an additional WebAssembly binary asset and a publically accessable copy of the JS library to function. This simplifies the process of getting up and running with Superpowered and it's associated parts. Since Superpowered v2.6.4, the library can be installed via NPM. Once within the superpowered ecosystem you can perform all of your processing chain in one AudioWorkletProcessor, or chain multiple AudioWorklets together in series or parallel. This means you can leverage API such as getUserMedia and the MediaSourceNode to get live microphone signals into the Superpowered ecosystem. Superpowered runs within the Web Audio API's AudioWorklets, that are scheduled within a standard WebAudio AudioContext and can be used in standard WebAudio API nodes. But the Web Audio API has inconsistencies and slightly different DSP implementations across browsers/devices which mean you can't guarantee your great product will perform and sound identically across devices. Superpowered uses the Web Audio API to set up audio I/O in the browser. If you'd like to see the wide range of browsers supported, see here. Within the last few years WebAssembly has become very widely supported, to a point where it is now a viable technology to use in production. We've been able to take the Superpowered C++ SDK and port it to WebAssembly, bring all the great unique features you know and love to the web. In short: what needed to be done in a native app, can now be possible in the browser. It allows for high-performance data processing in the browser. WebAssembly is a rapidly evolving technology with great momentum. Please note that setting Superpowered up correctly allows more of the code you write to be transferred between JS and C++ with as few syntax changes as possible. Don't worry, we've made it easy to understand. Setting up Javascript to handle realtime low latency audio with WebAssembly might be a little outside of what you're used to as it requires thinking about using multiple threads and WebAssembly Linear Memory. Using Superpowered in Javascript requires the use of WebAssembly to achieve the blazing speed that Superpowered is capable of. Javascript introduction For the purposes of this guide, we'll be using vanilla ES6 Javascript to demonstrate how to get started with the Superpowered SDK.
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