crossover frequency


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crossover frequency

[′krȯs‚ō·vər ‚frē·kwən·sē]
(engineering acoustics)
The frequency at which a dividing network delivers equal power to the upper and lower frequency channels when both are terminated in specified loads.
References in periodicals archive ?
In order to improve the transient response of the system and to reject harmonic disturbances, generally, the angular crossover frequency [[omega].sub.p] (=2[pi] x [f.sub.c]) of H (s) should be as high as possible.
Equations (23)-(27) summarize the parameters (i.e., Q, [[omega].sub.p1], [[omega].sub.p2], [[omega].sub.z], [[omega].sub.c] and [theta]) which are used to shape the loop gain T(s) via the compensator The crossover frequency [f.sub.c] and the low-frequency pole at [f.sub.p1] are defined as
In order to calculate [K.sub.PIR] (7) the crossover frequency [[omega].sub.1] needs to be determined, based on the condition that [[alpha].sub.PIR] is chosen to be 10% of [[omega].sub.1], since in that case the overall contribution of [G.sub.PIR] (7) to the phase margin is approximately equal to zero.
where [[omega].sub.c] is the gain crossover frequency interested and [[phi].sub.m] is the phase margin required.
The analysis also shows how the small variation of the rotation crossover frequency within a full span of the yeast growth cycle does not provide reliable information on the budding state of the yeast.
The crossover shear rate [[??].sub.c] in steady state shearing is numerically equal to crossover frequency [[omega].sub.c] in oscillatory shearing, both [[??].sub.c] and [[omega].sub.c] are approximately equal to the inverse of the fluid's characteristic relaxation time, [tau] [approximately equal to] [[??].sup.-1.sub.c] [approximately equal to][[omega].sup.-1.sub.c] These observations is consistent with work by Raghavan and Kaler (2001) and Cates (1990) indicating that this observation can be associated with a decrease the relaxation times tR decreased and can be associated with a decrease in the average worm length.
Define the crossover frequency [[omega].sub.C] as the least positive frequency where the curve crosses the real axis, i.e.
Normally, this causes a distinct tip in the power response at and near the crossover frequency. Nothing like this is evident at all with these speakers, as verified by several curves I ran at other speaker locations, including the room where I keep my second AV system.
Simulations performed using nominal dimensions resulted in a diplexer crossover frequency of 1 GHz, a low pass rejection of 34 dB and a high pass rejection of 18 dB.
We suggest that conflicting visual and vestibular self-motion cues at the crossover frequency would have the greatest potential to evoke SS.
Segregation ratios from heterozygotes with 1RS.1BL were not tested but normal (50%) male and female transmission rates and low crossover frequency of the intercalary rye segment suggest that it would not substantially deviate from 1:2:1.