A Guitar Amplifier Simulator written using the Web Audio API
This is a guitar amplifier re-created using the WebAudio API. Lots of time has been spent getting an accurate model and adjust the different parameters of the Web Audio nodes, with a guitar in hands and a headphone. Believe me: it SOUNDS!
The GUI uses the Web Audio Controls web components by g200Kg.
For the moment, you need Google Chrome (I used some options for choosing the inputs and outputs available on your device, that still do not work, but should soon, and the code is only supported by Chrome for the moment).
The Amp has been tested with a Mac Book Pro and different sound cards (Apogee Jam, different Presonus and RMEs) and works in real time with a very low latency (12-14ms). The latency is system and sound card dependent, so you've got to try. Windows with an asio sound card should work. On Linux Jack is not yet used by the WebAudio implementation in browsers, so I guess the latency should be heigher (let me know if you try it).
You can try the Amp Sim without a guitar, just go to https://mainline.i3s.unice.fr/AmpSim, wait until the eq sliders come up (that means that the reverb and cabinet simulator impulses have been loaded and decoded), and press the play button of the audio player on the left. Then you can try adjusting the knobs, sliders, etc.
If you want to try with a real guitar, it's better to use an external sound card, plug your guitar in it and set this input as the default input in your Operating System preferences. Then reload the page and press the button that is animated (zomming in and out) in the front panel of the Amp: it will enable microphone or sound card input. Then play :-)
Clone the repo, then run "npm install" and "node server.js". By default the server runs on port 8082 so open http://localhost:8082 in your browser. You can change the port, edit server.js.
If you plan to host the app somewhere, you need to have a server that support HTTPS as the getUserMedia API we use for getting the input audio stream from the microphone or sound card requires HTTPS.
So far, there is no persistence system implemented for saving the presets. There are all located in the amp.js file, look for "preset". If you open the console in your browser devtools and press the "show current settings" button, then it will print an array object in the console. Just copy and paste this value in the code of amp.js, after the current presets. If it sounds good, do not forget to email this to me too ([email protected]).