Audiometric testing is done between 125 and 8000 Hz.
Humans can hear sounds in the frequency or pitch range of 20 to 20,000 Hertz (Hz), but most conversations occur between 300 and 3000 Hz.
It is the number of cycles per second, represented by units as s -1, also called hertz, Hz.
Refresh rates are measured in Hertz (Hz).
Some of the larger hotels in the cities also have 100 vac / 60 Hz power outlets to cater for visitors from North America.
The spectrum contains just one component, at 256 Hz, because the pure tone is a single sine wave.
The transition in interaural phase defining the Huggins pitch creates the discontinuity in the tracks around 600 Hz.
This refresh rate has to be a minimum of 70 Hz so your eyes won't tire and can't detect screen flickering.