I think i know the buffer you are talking about and there are at least two insights I’ve learned from it. 1) it can contain any sound, and it de-coheres when you attempt to make meaning out of the sound. 2) you can train yourself to expand the length if the buffer, to the point of recalling sounds that have occurred several minutes ago, without focusing on them, like rewinding a tape that runs despite your awareness.

You’ve trained yourself already, to an extent, so that your tape rolls as far as it takes for a full sentence to fit and error-correct for the parts you don’t know. Notice the boundary of meaning and non-meaning you have to tread on when experiencing speech you’re not completely familiar with.

I’m also bilingual so perhaps learning a language is one of many ways to deconstruct our perceptions.