Auditory Threshold: The minimum level of sound required for a person to detect it. In this case, the loud music exceeds the auditory threshold necessary for the concert-goer to notice their phone ringing.
Cocktail Party Effect: The ability to selectively focus on one specific sound while filtering out others. In this scenario, the concert-goer's attention is focused on enjoying the loud music rather than noticing their phone ringing.
Sensory Adaptation: The process by which our sensory receptors become less responsive to constant stimuli. With continuous exposure to loud music at a concert, the concert-goer's ears may adapt and become less sensitive to external sounds like their phone ringing.