cavity resonance

cavity resonance

[′kav·əd·ē ′rez·ən·əns]
(electromagnetism)
The resonant oscillation of the electromagnetic field in a cavity.
(engineering acoustics)
The natural resonant vibration of a loudspeaker baffle; if in the audio range, it is evident as unpleasant emphasis of sounds at that frequency.
References in periodicals archive ?
Numerous studies have been performed on the generating mechanism of the cavity resonance [2, 3, 4, 5], and both car manufacturers and tire companies have experimented with methods to reduce the structure-borne cavity noise [6,7].
However, care must be taken reduce the impact of cavity resonance. Cavity resonance occurs when a conductive enclosure is larger than half a wavelength.
Referring to Figures 4(b)-4(d), the IL dip at around 4.5-5.1 kHz could be attributed to the cavity resonance. This deduction could be drawn from the understanding that the volume of the cavity in each type of ear cup would be nearly identical since their physical geometries were maintained consistent.
Earlier this year, Disney Research created a method, dubbed "quasistatic cavity resonance", that would enable rooms and cabinets to "generate quasistatic magnetic fields that safely deliver kilowatts of power to mobile receivers contained nearly anywhere within".
It is encouraging to see that we have been able to measure with this instrumentation significant dc voltages corresponding to resonance signals falling within the cavity resonance frequencies, whereas presenting only very low-strength flat noise for other frequencies, thus demonstrating in effect the potential of this scheme and the effectiveness of our measures for noise suppression, which in turn increase the sensitivity of the experiment.
It can also be viewed from Figure 6 that there are several obvious resonance orders within the frequency range of 100-400 Hz; among those, the response of the (1,1, 0) order acoustic cavity resonance is not prominent, which is majorly related to the higher thickness of upper and lower covers than side wall; when MF acoustic blanket is applied, the order resonance is difficult to be identified.
A Ag-Si[O.sub.2]-Ag structure supports LSPR resulting in angle robust color filtering as shown in Figure 8 [40], which is different from FP cavity resonance. The MIM structure can also be used to tune the guided mode dispersion and construct a plasmonic lens [42-44].
As shown above, when the laser is subjected to strong OFB, the modulation frequency is enhanced over a narrow mm-frequency band that can be very close to the external cavity resonance frequency [f.sub.ex].
In the literature, multilayer FSS was employed to especially enhance the gain of the various antennas, such as semicircular slot [7], WCDMA dipole [8], 60 GHz patch [9], and cavity resonance [10] antennas.
The seashell phenomenon is cavity resonance, studied in great detail by Hermann von Helmholtz.
If the cavity resonance frequency and working patterns are fixed, the radius of the cavity is determined.