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 ?
By controlled tilting of immobilized ctenophores in either body plane with video recording of activated comb rows, I found that higher beat frequencies occurred in the sagittal than in the tentacular plane at orthogonal orientations.
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).
An array of ICs can be synchronized to a system clock to eliminate beat frequencies.
Chair and scene motion frequencies and the resulting beat frequencies are presented in Table 1.
These methods include mode locking of laser diodes;[7] generating mm-wave beat frequencies between two tunable lasers;[8] using the laser diode's nonlinearity to upconvert data signals (laser diode mixing);[9] using the photodiode's nonlinearity to up or downconvert data signals, also using the harmonic frequencies can produce substantial bandwidth improvement;[10] high frequency narrowband electro-optic modulation;[11] simultaneously using direct laser modulation and narrowband carrier modulation on EOMs for upconverting data signals;[12] and utilization of laser diode harmonics by using large modulation indices.
The switching frequency of these regulators can be synchronized to an external clock to eliminate beat frequencies between regulators.
The bidirectional synchronization input on the MAX5071A/MAX5071B allows multiple power supplies to operate at the same frequency, eliminating the undesirable beat frequencies that result when power supplies are operated at varying frequencies.
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.
Regulators can be synchronized to eliminate beat frequencies between converters and remove the possibility of audible system noise