beat frequency


Also found in: Acronyms.

beat frequency

[′bēt ‚frē·kwən·sē]
(electronics)
The frequency of a signal equal to the difference in frequencies of two signals which produce the signal when they are combined in a nonlinear circuit.

beat frequency

beat frequencyclick for a larger image
The periodic variation in amplitude of an oscillation resulting from the superimposition (or mixing) of two oscillations of differing frequencies. It is equal to the difference between the two frequencies.
References in periodicals archive ?
We then obtain the index [i.sub.peak] corresponding to the beat frequency of [d.sub.pq,k][n] through the peak detection of [absolute value of ([D.sub.p,qk][u])] for 0 [less than or equal to] u [less than or equal to] [N.sub.RFFT] - 1.
The IQ-mixer and NI DAQ are used for the phase calculation, while the beat frequency is measured with the aid of the NI-SCOPE.
The nasal cilia are sensitive to high temperatures and the ciliary beat frequency is known to reduce at higher temperatures.
Measurements of beat frequency (see next section) were made only during continuous activity.
Thus, secretolytic activity could also contribute to the cough inhibiting action of EPs[R] 7630 by dilution and accelerated removal of the chemical stimuli whereby the later effect may be enhanced by the previously reported increase of ciliary beat frequency in the presence of the extract (Neugebauer et al.
Flagellar beat frequency was calculated from the period required for one complete beat.
Such motion has been studied in terms of the number of cells that are rotating, their rotational frequency and the beat frequency of the sperm tail through frame by frame analysis of the recorded real-time videos.
The beat frequency of the interfered components is then detected by AVM counter.
At heart a lung would do arterial ink in deep retirement beating frequently with beat frequency breach.
Mean quick phase amplitude and beat frequency increase approximately linearly with stimulus velocity.
A key advancement of the device is the use of a resistive-pulse technique to determine the tail beat frequency and the morphology of the sperm head.
Each frequency represents a unique summation range by using Equation (16), so by having the beat frequency, ([R.sub.T] + [R.sub.R]) is known, which represents an iso-range.