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rMIXr: how we learned to stop worrying and love the graph

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Ben Fields @alsothings Sam Phippen @samphippen

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this talk represents our experience using the web audio APIs to go from nothing to a reasonably complete prototype in 48 hours about a year ago. actual API usage may vary.

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⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠ ACTUAL API USAGE MAY VARY ⚠⚠⚠⚠⚠⚠⚠⚠⚠⚠

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Midem Hack Day

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[[[[midem branding]]]]

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DJ Spotify festivalBag

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rMIXr: white-labelled DAW in the browser

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Effects in rMIXr

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`

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Source Sink

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Source Sink .connect

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Source Sink .connect

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Source Sink Fx/ Analysis

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Source Sink Fx/ Analysis .connect

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Source Sink Fx/ Analysis .connect .connect

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OMG NO

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Source Sink Fx/ Analysis .connect .connect

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Converb Converb .input Source Sink .connect .connect

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How to do UI for effects?

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Icon font didn’t load lol

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Ben will explain how this works

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The local storage API is totally a message bus

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Last write wins is totally a good consistency model

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server side audio rendering is for suckers

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thus: need to serialise state and associate it with page location

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every time you change a setting,

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every time you change a setting, the new state is serialised to the url

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generalise to *all* UI elements

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a channel’s state channel strip’s state

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hash decoding all the way down

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http://rmixr.com/queen/#{"channels":[{"effects":[],"loopPoints": [],"notmuted":true},{"effects":[{"name":"threebandEQ","params": {"bassgain":"21","midgain":"-24","treblegain":"16"}}, {"name":"chorus","params":{"rate":2.41,"feedback":0.2,"delay": 0.05}}],"loopPoints":[]},{"effects":[],"loopPoints": [],"notmuted":true},{"effects":[{"name":"converb","params": {"dry":0.5,"wet":0.59}}],"loopPoints":[],"notmuted":false}, {"effects":[{"name":"stereoPan","params": {"pan":-0.1}}],"loopPoints":[],"notmuted":true},{"effects": [{"name":"stereoPan","params":{"pan":0.11}}],"loopPoints": [],"notmuted":false}]}

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the fragment id *is* the application state engine

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at least tweeting and entry submission is easy

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thanks twitter.

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at least tweeting and entry submission is easy

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at least the back button works

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{this is where we attempt a demo}

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so:

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unifying abstractions

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local storage can be a messaging queue

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even single page web apps can be RESTful

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Let’s have some questions a!/samphippen !/alsothings