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Web Audio

Reverse-Engineering Technology DataChannel, wasm, Web Audio, webassembly

Finding the Warts in WebAssembly+WebRTC

A while ago we looked at how Zoom was avoiding WebRTC by using WebAssembly to ship their own audio and video codecs instead of using the ones built into the browser’s WebRTC.  I found an interesting branch in Google’s main (and sadly mostly abandoned) WebRTC sample application apprtc this past January. The branch is named […]

Philipp Hancke · April 11, 2019
Hear No Evil picture

Technology audiocontext, autoplay, playsinline, Web Audio

Autoplay restrictions and WebRTC (Dag-Inge Aas)

One of the great things about WebRTC is that it is built right into the web platform. The web platform is generally great for WebRTC, but occasionally it can cause huge headaches when specific WebRTC needs do not exactly align with more general browser usage requirements. The latest example of this is has to do […]

Dag-Inge Aas · May 7, 2018

Guide conferencing, MCU, VoxImplant, Walkthrough, Web Audio

Your Browser as a Audio Conference Server with WebRTC & Web Audio (Alexey Aylarov)

Conference calling is a multi-billion dollar industry that is mostly powered by expensive, high-powered conferencing servers. Now you can replicate much of this functionality for free with a modern browser using the combination of WebRTC and WebAudio. Like with video, multi-party audio can utilize a few architectures: Full mesh – each client sends their audio […]

Chad Hart · May 20, 2016

Guide audio level, FFT, getUserMedia, RMS, VAD, volume, Walkthrough, Web Audio

Shut up! Monitoring audio volume in getUserMedia

A few days back my old friend Chris Koehncke, better known as “Kranky” asked me how hard it would be to implement a wild idea he had to monitor what percentage of the time you spent talking instead of listening on a call when using WebRTC. When I said “one day” that made him wonder […]

Philipp Hancke · December 10, 2015

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