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- The number of occurrences of a wave per second
- The unit for frequency is Hertz (Hz)
- 20 kHz is shorthand for 20,000 Hz
- Audible frequency range is 20 Hz to 20 kHz
- What is perceived as â??pitchâ?? "pitch" is determined by the frequency of the sound wave
- Male voice: 100 Hz to 8 kHz
- High female voice: 180 to 10 kHz
- Low frequencies in the natural world: distant thunder, earthquakes, other natural catastrophe. Low frequency rumble often denotes a threatâ?¦ threat thus the four bass notes as the sharkâ??shark's theme in Jaws.
- High frequency: sometimes associated with serenity, peacefulness
- Infrasonic: below 20 Hz. Frequencies around 12 Hz can cause nausea. \'\' This was not the case when \'\' Mythbusters \'\' tested it.\'\'
- Ultrasonic: Frequency region above 20 kHz. Have to watch very high frequency sounds on a set (e.g. video monitors that emit strong acoustic energy at around 16,000 Hz)
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