I count those in the same category as birdsong. You can see, and/or feel, laughter. There's an equivalent to "voice" in every mode of communication I'm aware of (speech, sign, romantic chess, oil-on-canvas…). There's the inherent disability of not being able to access those modes of sensory experience (and I'm not belittling anybody's desire to experience them who can't) but the social impact of the impairment is incidental and avoidable.

Perhaps these things are culturally significant, above and beyond their inherent social value, but that isn't intrinsic or necessary.