It can be explained by Treisman's attention attenuation theory: the auditory attention phenomenon. When a person's auditory attention is focused on a certain thing, the conscious mind excludes some irrelevant sound stimuli, while the unconscious mind monitors external stimuli. Once some special stimuli are related to oneself, it can immediately attract attention. It got its name because it is often seen at cocktail parties. For example, at various noisy cocktail parties, there are sounds of music, conversations, footsteps, clinking of wine glasses and tableware, etc. When someone focuses on enjoying the music or other people's conversations and turns a deaf ear to the noisy sounds around them, If someone mentions his name in another place, he will react immediately, or look towards the speaker, or pay attention to what the speaker says next, etc. This effect is actually an adaptation of the auditory system. The rapid recognition of familiar things is known as the cocktail party phenomenon. That is: we stand in a room full of people, there may be ten or twenty people talking around us, but we can pick out the conversations we want to hear. In other words, our brains judge every other conversation to some extent and then decide not to listen.