assAudio

Audiorecorder-Questiontypeplugin for ILIAS 8 (for 5.2.x to 7 see branches and releases)

Questiontype to record audio without a Java-Applet or Adobe Flash

The questiontype records media with built-in methods of the browser.

This plugin will add a questiontype, that:

• Records the voice of the participant
• Allows pause and resume while the recording is not finished
• Indicates successfull microphone input with a waveform
• Lets the participant rehear the recording
• Supports autosave and forced submission even in case the recording was not properly finished within an interval (see below)

Important for admins:

• The recordings are stored as recording_[active-fi]_[#testpass]_[timestamp].webm in the respective subfolder for assessment in the data directory
• The whole history of recordings is kept to allow the retrival of an earlier submission in case of an error in the browser or in ILIAS
• The size of a single recording will be around 700kB/min - keep in mind that a separate recording is created per autosave/edited submission
• The recordings will be deleted when the participants data or the test itself are deleted
• The interval in which the input is automatically prepared for submission increases over time to ease the CPU-load for the client
  • First minute: every 5 seconds
  • Minute 1-5: every 10 seconds
  • After 5 minutes: every 20 seconds

Usage

Install the plugin

mkdir -p Customizing/global/plugins/Modules/TestQuestionPool/Questions  
cd Customizing/global/plugins/Modules/TestQuestionPool/Questions
git clone https://github.com/kyro46/assAudio.git

and activate it in the ILIAS-Admin-GUI. Activate manual correction.

Known Problems

• Audio capture not yet possible with Safe Exam Browser 3.x

• The plugin uses a flash-free approach which is not yet compatible with all browsers as the technology is currently work-in-progress at W3C. See:

  • https://www.w3.org/TR/mediastream-recording/
  • https://caniuse.com/#feat=mediarecorder

• Textual feedback about the length of a recording is only provided in Firefox

Credits

• Development by Christoph Jobst