While neat, all the web audio stuff I've seen fundamentally relies on setTimeout() for sequence playback. This only works at all because the apis let you schedu

While neat, all the web audio stuff I've seen fundamentally relies on setTimeout() for sequence playback. This only works at all because the apis let you schedule playback events ahead of time, against their special high resolution timer. To see how it doesn't work, press play and then move to a different browser tab. The audio processing itself works fine while in the background, but the api makes no facility at all for any sequencing or any user-supplied control-rate data which runs as part of the audio graph. This is rather unfortunate and makes it hard to build real applications. If somebody knows some solution for scheduling playback events while in a background tab, please speak up. In my own experiments, the very best I was able to do was synthesizing control-like signals inside of a ScriptProcessorNode. I quit before I got it to work, but that's all I could really come up with. The other option would have been to start scheduling 500ms ahead once the tab goes into the background, but you have to know it's coming.