Kilobytes Megabytes Gigabytes. The size of information in the computer is measured in kilobytes, megabytes, gigabytes, and terabytes. In this section, we'll look at common sizes you would see in real life, and work some arithmetic. Any thinking person today should have a rough idea of what KB, MB and GB are.
The maximum upper range of human hearing is about 20 kHz for children, declining to 15-17 kHz for middle-age adults. The top end of a dog's hearing range is about 45 kHz, while a cat's is 64 kHz.
MOST OF THE TIME, it's in an animal's best interest to be undetectable, but sometimes it's useful to be loud-very loud. While a normal human conversation registers at about 60 decibels (dB), some animals can screech, scream and holler much louder than a subway train (100dB). The human threshold of pain is 120, and at 160 your eardrum will rupture, but many loud animal calls are not designed for human ears.