The phrase "around a frequency" is correct and usable in written English.
It can be used when discussing topics related to sound, radio waves, or any context where frequency is a relevant factor.
Example: "The signal fluctuates around a frequency of 100 MHz, which is optimal for our communication needs."
Alternatives: "near a frequency" or "about a frequency".
Hence, it requires the bandpass filtering of the signal around a frequency of interest and then applies the HT to obtain the instantaneous phase.
The FE result shows an 18-dB SPL increase of sound pressure around a frequency of 4000 Hz with a pressure response pattern similar to the experimental results.
In particular, it is found that the large spectral ratios around a frequency of 0.4 s can be identified as common features in the ratios at MK01, 03, 05 and 09 with the heavy damage.
Note that much of the power in g21 is concentrated around a frequency of 1.18 Ω o, corresponding to a velocity profile with l=3, m=1 and a frequency of 0.18 in the rotating frame, matching a wave seen in the 3 m device.
All materials were therefore low-pass filtered at 2.5 kHz and spectrally rotated around a frequency of 1.25 kHz.
Given that a TE insertion is present in some of the North American strain pools and absent from others (i.e. given its pool frequency), we wished to calculate the likeliest frequency of this insertion in the entire North American population, as well as suitable confidence bounds around such a frequency estimate.
According to this principle, when oscillators with similar frequencies interact weakly, stable synchronization around a consensus frequency is the generic result.
The mismatch in the acoustic impedance between these layers results in waves that are reflected and interfere, giving an acoustic band gap around a central frequency f B. For normal incidence, this frequency is given by f B = 2 m ( ρ 1 d 1 / Z 1 + ρ 2 d 2 / Z 2 ) − 1, m = 1, 2, 3, …, (7).
It also exhibits a significant frequency dependence -- it reverses sign at a frequency around 5.4 mHz, and is strongest at around 4.0 mHz.
The oscillation frequency was broadly influenced by connectivity strength in IF IF networks around a central frequency of ∼28 Hz (Fig. 3 C, left), while IF RES networks exhibited oscillation frequencies in a more narrow range of around ∼27.5 Hz (Fig. 3 C, right).
Spectral rotation is a transformation that rotates the spectral makeup of a complex signal around a central frequency, such that the information in the high-frequency ranges trades places with the information in the low-frequency ranges.
