WASHINGTON The ear-piercing beeps, squeals and buzzes of 90s-era dial-up internet will vanish from thousands of holdout American homes in September as historic provider AOL shuts down the service. The raucous sounds of modems establishing their connection to distant servers marked a generation of internet users and still pop up in memes to this day. It also made AOL one of the biggest tech firms of the era, but in the following decades the dial-up connections were steadily replaced with much