Mute your Speakers with the Caps Lock Key
If have an old keyboard without any of multimedia keys, it can be incredibly difficult to quickly mute your speakers.
sound
If you can hear all these Sounds, your Ears are in Good Shape
Take this quick unscientific test to determine how healthy your ears still are. While human ears can ideally hear sounds from a frequency range of 8kHz – 22kHz, the hearing ability starts deteriorating post early adulthood, and it is common for people past 25 to not hear anything over 15kHz.