SennsLab: Guide to the Active Audiovisual Template

The Active Audiovisual Template in SennsLab

The active audiovisual template is used to present video files, where the participant is expected to provide feedback or interaction.  This template is most often used to simulate the experience of a point-of-sale or store shelf environment.

The active audiovisual template is a Standard template.

To set up an active audiovisual test:

  1. Enter Familiarization Tasks: This is a set of videos used to familiarize the participant with the context of the task.  You can define between 0-3 of these.  Familiarization tasks are not analyzed.  Note that, unlike in the Passive Audiovisual Test, SennsLab will not add familiarization videos automatically.  The order can be randomized by checking the "randomize" checkbox.
  2. Enter Assessment Tasks:  This is a set of 1-15 videos for full analysis.  The order can be randomized by checking the "randomize" checkbox. 
  3. Create Intervals of Interest (IOI):  An Interval of Interest is an optional design tool that allows you to define a segment of a video for statistical comparison with other segments within the video, or similar segments in other target videos.  IOI work somewhat like areas of interest (AOI), except that they are defined by time rather than area and are used over dynamic stimuli like videos.

    For more information about creating IOI, see Guide to Intervals of Interest.
  4. Set Up Behavioral Sensors
    Active image experiments often require some degree of user interaction (clicking on a product, answering questions, etc.).  Click on the Behavioral Sensors tab to activate mouse position tracking, webcam video recording, or a microphone for audio recording.

Important Considerations:

Some important considerations when using the active audiovisual template:

  • When there are 1 or 2 stimuli events, the total test duration allowed is 150 minutes (two and a half hours).
  • When there are 3 or more stimuli events, the maximum total test time allowed is limited to 35 minutes.
  • Acceptable video formats are: .avi, .mpeg, .mpg, .wmv and mp4.  The video must be playable on the computer you are using for stimulus presentation (and this could depend on the codec used to create the video).  If there is an error when importing a specific video, we recommend converting to .avi format before importing.

 

Other Resources:

For an explanation of the general test sequence and execution, see Understanding Experiment Structure in SennsLab

For more information about the built-in calibration in this experiment template, see SennsLab Emotional-Cognitive Calibration