Plugin for rating multiple audios on a slider

[Semeriuss]

I was trying to develop a MUSHRA test on jsPsych but couldn't find a suitable plugin for it. I checked this discussion and followed up on this discussion to develop a new plugin suited for MUSHRA-style (multiple audio slider rating) tests.

Here's the current state of the plugin. The yellow button (for the reference) is optional and the audio position tracker syncs smoothly between audios (without necessarily having to start from the beginning for each audio). The written labels on top can also be modified/excluded. Each label gets highlighted depending on the position of the rating slider.

Let me know if this would this be helpful to anyone or if you want more information about what responses are collected, etc.

[jodeleeuw]

@Semeriuss this looks great!

A contribution to https://github.com/jspsych/jspsych-contrib would be very welcome.