Percussive vs. non-percussive sounds

Because generally accepted theories of sensory integration suggest that visible gestures should not affect judgments of auditory tone length, I wanted to examine whether these gestures would affect the perception of other sounds.   Therefore, this experiment paired the same gestures with a variety of other instrument notes (piano, horn, clarinet, voice, and white noise) to see if they were similarly affected.  Profiles of these sounds can be seen below:

Listen to these sounds using the player below, or jump straight to viewing the stimuli and results.