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wam-openstudio
Multitrack Web Audio Modules DAW Open source, using C++ (Emscriten-WebAssembly) for the audio processing and the plugins automations, in the audio-thread.
Sounds like a job for web workers. Do you have any examples? I'd love to check them out. I've seen some sequencers but never a full-blown DAW attempt. I've been toying with a couple browser-based, realtime audio ML ideas lately (mostly porting some models to Tensorflow.js), so my interest is piqued.
As far as libraries go for analysis, the only solid option I've found so far is Meyda[0]. I was drawn to it mostly because it closely maps to librosa[1], and it seems fairly mature. Does anyone have any others that may come in handy for this kind of work? This is just free-time tinkering for me. I'm completely new to the space.
[0]: https://meyda.js.org/
The DPF framework is moving towards WASM build targets;
https://cardinal.kx.studio - web version of the VCV Rack wrapper Cardinal
https://github.com/DISTRHO/Cardinal/issues/287
We started writing a web-based DAW prototype that relies on the Webaudio Modules version 2.0 (a standard for plugins/hosts on the Web, that can be developed using a large variety of languages/approaches). For the moment, the DAW has very limited features but 1) Each track is written as an AudioWorklet, and sample accurate processing is being done for playing each track. That means, that from the processor part of each track player, we can schedule events (automation, midi, etc) to plugins. We can also loop and edit the audio track with a sample accuracy (this is not done yet, but everything is ready for that. We will add this soon). 2) Each track is associated with a plugin chain. Plugins are WAM plugins (webaudiomodules), and can be automated. 3) There are quite a lot of plugins already available in the WAM format, most effects, instruments. The WAM distribution comes with a set of example plugins + the FAUST IDE can generate WAM2 plugins in seconds. All running DSP in WASM. We (WAM designers, implementers and maintainers) can be reached on a slack channel (#webaudiomodules, subchannel of the #webaudio channel. Get incitation here: https://web-audio-slackin.herokuapp.com/
The WebAudioModules distro is 4 GitHub repos, it is also available as npm modules. (https://github.com/webaudiomodules, start by building the wam-example one and run the examples). You can find some presentations on youtube (such as: https://www.youtube.com/watch?v=8G3we8dikq8).
DAW prototype (should be included soon in the wam-example repo): Picture : https://i.ibb.co/mBdNGqk/WAM2-DAW.jpg online version: https://wam-openstudio.vidalmazuy.fr/, current repo (work in progress, as I said, this work is active and we do plan to add all missing functionnalities the upcoming months) https://github.com/TER-M1/wam-openstudio
There are also professional, commercial DAWs, not open source ones, such as https://ampedstudio.com/ that is also capable of loading WAM plugins, and is developed using the same approach as our DAW proto (host as AW), bandlab.com or soundtrap.com.
Michel