Focuses on the choice to ignore, not just an inability to hear. She could tune out her brother's guitar practice when studying.
Pro Tip 2/3
Not Rude Intent
It's not always meant to be disrespectful; sometimes it's just a coping mechanism. During the noisy party, he had to tune out to concentrate on his friend's story.
Pro Tip 3/3
Overload Response
Used when overwhelmed with too much information or stimulation. At the end of a long day, she would tune out the hustle of the city.