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https://issues.apache.org/jira/browse/GUACAMOLE-375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16153912#comment-16153912
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Michael Jumper commented on GUACAMOLE-375:
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Guacamole's audio support relies on the [Web Audio
API|https://www.w3.org/TR/webaudio/], which is not supported by Internet
Explorer, but is supported by all other browsers:
http://caniuse.com/#feat=audio-api
Adding audio support for IE without the Web Audio API would require leveraging
<audio> tags (the technique that Guacamole used to use) and non-free codecs (IE
only supports playback of MP3 and AAC), and works very poorly in practice.
Since the buffering of <audio> tags cannot be controlled by JavaScript, audio
streams would need to be split into small (but individually playable) audio
packets, with noticeable gaps / clicking between each packet due to the lack of
sufficient resolution in JavaScript timers.
Given the above, I'm not sure implementing all this would be worth the effort,
but that's definitely open for debate.
> Audio Redirection does not work in Internet Explorer
> ----------------------------------------------------
>
> Key: GUACAMOLE-375
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-375
> Project: Guacamole
> Issue Type: Bug
> Components: guacamole-common-js
> Affects Versions: 0.9.13-incubating
> Environment: Internet Explorer 11
> Reporter: Amarjeet Singh
>
> Audio redirection works in Google chrome but it doesn't work in Internet
> explorer.
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