timbre tweaks and animating emoticon

To perform live, I turned off all the triangles and sounds until an emotion was detected. If you want to do that, set [these variables](https://github.com/therewasaguy/yayaya/blob/a13bbb84620127ae807546d3bbfdf240188d1b77/arp.js#L17) to false (I set them back to true which is probably better for the website).
The emotion animation looks like PacMan but it'd be great to play with it more later. I think it should spiral out from the center...