beat frequency

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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 ?
Should a master fail, ordinary LVDT signal conditioners in a master/slave hookup will revert back to their own oscillators, subjecting them to the beat frequencies the master/slave hook up was supposed to prevent.
The power of the combined beam is measured by a fast photodetector, and the output of the detector then contains beat frequencies [f.
Knowing that mackerel and eels swimming in water generate and thus experience different hydrodynamic environments, the duo simulated these different environments by varying tail beat frequencies and fluid viscosity (syrupiness).
The TPA2014D1 includes an integrated phase-locked loop (PLL), which synchronizes the Class-D amplifier and boost converter clocks in order to eliminate potential audible beat frequencies.
The switching frequency of these regulators can be synchronized to an external clock to eliminate beat frequencies between regulators.
For example, all internal modules run off the same reference clock, silencing potential audible beat frequencies that could occur when using a separate discrete amplifier and boost converter.
The new DC-to-DC switching controller can be synchronized to an external clock to eliminate system beat frequencies between converters that can sometimes result in audible noise.
The synchronized modules also make EMI filtering easier by eliminating beat frequencies.
Regulators can be synchronized to eliminate beat frequencies between converters and remove the possibility of audible system noise
Beat frequencies are cross-talk frequencies between oscillators in tuners.
A rich set of features, including phase-lock operation and phase delay, facilitates ease of use in systems that are sensitive to ripple and beat frequencies.