As is the way with a lot of browser APIs, there are some caveats that need to be noted to ensure using the Web Audio API works consistently across all browsers that support it. It first landed in Chrome 14; other WebKit-based browsers (Opera 15, Safari 6 and iOS Safari 6) eventually inherited support for it. Firefox landed a Gecko-implementation of the Web Audio API in version 25; at the time of writing, Microsoft has no plans for Internet Explorer to support the API.
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