User Interface Testing - Yamaha TG77 - Overview
Objective: Change the selected voice to "DreamRodes"
Assumptions: TG77 already in VOICE mode and on MEMORY I (internal). (1)
Notation (2):
[Button]
\ - Press
/ - Release
* - Number of repeats
s - Number of seconds
Ex: [Y \ /]*52 / 10s
I have produced short movie clips illustrating each of the ways to select a new voice
(1) This assumption is made to constrain the number of possible ways to change the voice. Without these assumptions, it would be necessary to consider many other paths from different modes. This study would be useful in the evaluation of the ease of use of the Yamaha TG77 in live performance. In live performance environments it is crucial to be able to switch quickly between the most important modes related to the performance.
(2) I considered an XML-based notation format, as I thought it might be useful later on to have the format easily machine-parseable. It seems from first glance that there is a heirarchy of presses and releases. By nesting presses, it is easy to see what happened and when.
<Yes/><Yes/>
<Yes>
<Left/>
</Yes>
This is likely overkill, so I'll abandon it for now.