Kurzweil:Frequency
From Sonikmatter
Frequency is defined as the number of cycles of an event in a set time. The number of times something happens in any given time is referred to as it's Frequency. For audio (and other signal processing) the Frequency is almost always expressed in Units- Hertz of a sound normally refers to it's Fundamental, though it is equally valid to be talking about specific Frequencies of a sound that aren't it's Fundamental. An example would be "I'm eq-ing this sound to remove the high Frequency

