Now they have bluetooth and chromecast and webcams, so you can play the beeping noises on the stereo speakers of your home media center, and watch your food cook on your giant flat screen TV.
Add 3D, VR, and smell-o-vision and you'll never have to eat again.
Can't wait for taste-o-vision and stop the cooking when it taste good.
As a rule, my first step when installing a new appliance is to disassemble and mute the piezo buzzer using some foam and electrical tape. You still hear the signals but not at the obnoxious default of ~120db.
You should check the manual first for a hidden setting to mute sound. That's how I silenced our work microwaves.