The actual frequency of the sinusoid is indicated as "0" on the horizontal axis.

The actual frequency used by a particular phone can vary from place to place, depending on the settings of the carrier's base station.

The actual frequency used by the master transmitter varies between various models and manufacturers.

Several environmental risk factors have been proposed to support the hypothesis that the actual frequency of autism has increased.

A reference center pitch indicates the actual frequency of the recorded note.

Channel numbers represent actual frequencies used to broadcast the television signal.

Complex frequency is similar to actual, physical frequency but rather more general.

In most cases, TV stations will not have the actual frequency they are currently using on their website.

The actual frequency of miscarriage is generally underestimated.

Unlike radio, which names its channels by the actual frequency, like 1010 or 95.5, television channel numbering is arbitrary.