There are three spectral bands, the MPF is 5775Hz, and the peak frequency of spectral band on both sides of the MPF is 4575Hz and 7025Hz and is 1.5dB and 3.4dB lower than that of the MPF respectively.

The relation between the peak frequency and bandwidth of the n-th derivative of the Rayleigh pulse and the pulse shape parameter α and the order of differentiation n was researched.

Their absorption properties have been studied,it is found that when the coat thickness is 1.00mm,the absorption peak is highest and the absorption peak frequency is 10.0GHz.

The results showed that 1) all the NPSDFs for the spontaneous discharges were single-peak with a peak frequency of 3. 91±1. 63 Hz (spontaneous rhythm) and a peak value of 0. 0154±0. 0045;

Peak power in CWT is changed from 5746.64±1577.39 to 3879.82±1290.14. ②CSEP sampled in lateral curvature orthomorphia is used to monitor spinal cord function. Variability of peak time, peak frequency and peak power analysis in STFT is 9.40%, 14.34% and 1.71%（Cz-Fz）or 11.49%, 7.89% and 7.41%（Cv-Fz）.

Compared with female sheep,the overall mean levels,base line levels,peak frequency and peak amplitude of GH secretion in male sheep were higher than 179.60%(P<0.01),124.84(P<0.01),100.00%(P<0.01) and 272.80%(P<0.01),respectively. The peak duration was no significant different between the two groups.

The EEG was recorded referred to the mastoids,and the intrahemispheric coherences between the parietal and frontal electrode pairs (left: F3/P3;right: F4/P4) in the wide-band alpha frequency and peak frequency of photic driving were calculated at rest and during 1 Hz light stimulation,respectively. Interhemispheric coherences between fontal leads (F3/F4) and parietal leads (P3/P4) were calculated as controls.

The results shows that spectral moment m0 vary remarkablywith dependent variable y and peak frequency ωp vary remarkably with T1×ωp. When T1×ωp=5 and γ = 3.27 ,the predictive values of m0 and ωp tally with the analysis resultof actual measured data.

The equation of spectrum density of wave force, the characteristics of statistic distribution of wave, wave force or wave moment and the coherency between the zero moment of wave force spectrum and peak frequency ω_0 of wave spectrum are discussed in this paper.

These variables are carrier frequency off-set value, pre-emphasis factor, weighting factor, video spectral distribution and nominal peak to peak frequency deviation.

Based on a set of recording data form observation platform called Alwyn, the empirical spectrum expression is modified in terms of its peak elevation parameter and peak frequency position parameter.

Meanwhile, 2-D spectrum and the corresponding parameters of irregular wave transformation (predominant wave direction and mean wave direction, peak frequency and peak spectrum density, spectrum width, mean period, mean wave length, mean wave crest length and 3-D index and so on)、 1-D frequency spectrum and the corresponding parameters and numerical results of wave height、 wave direction of regular wave transformation are offered.

Bats emitted CF/FM (constant frequency/frequency modulated) pulses with 2-3 harmonics. The peak frequency,pulse duration,interpulse interval of the calls were 105.3±1.7 kHz,39.5±9.6 ms,73.9±16.0 ms,respectively.

Common methods classify animals by their difference in sound pulse rate, wave form structure in time domain and main peak frequency in frequency domain et cetera.

This method is performed in the following steps: (1) take the peak frequency f_p on the amplitude spectrum obtained after multi-trace signal extraction, then convert it into dominant frequency f_d;

It provided an objective criterion for clinical test. According to the difference in comparing the peak frequency of the normal limb with that of the fracture limb, we can estimate the fracture healing.

Experiment results show that the frequency of peak component (peak frequency) in the cross power spectrum of accelerations of certain two measured points is decreased after fracture in vivo measurements and in vitro simulations.

It is revealed that the dependences of the boson peak intensity, the boson peak frequency, and the glass transition temperature on the composition of glasses in the barium borate system correlate with each other.

In children with DNA, the age-related increase in cortex activation was expressed as a significant increase in the α-rhythm peak frequency.

The mean signal duration varies from 0.04 to 1.52 s for various signal types, the pulse repetition rate on the average ranges from 13 to 1300 (possibly, 2700) impulses per second, and the mean peak frequency falls within 0.2 to 11.3 kHz.

The peak frequency of the synchrotron spectrum should shift toward higher values as the pulsar period P decreases; this is, in agreement with observational data for 27 radio pulsars for which emission has been detected outside the radio band.

For most pulsars, the peak frequency νm is below 10 MHz.

Shock associated noise is an important part of choked jet noise. Sound field and spectra thereof were investigated experimentally by utilizing the heterodyne analysis technique, so that both the screech and the wide-band noise can be recorded and studied. The sound pressures and spectra vary widely with the stagnation pressure, but the overall sound pressure level at 90?to the jet shows good regularity, it is nearly a constant between pressure ratios 3 and 8.5, given by 97 + 201og d, dB, d being nozzle diameter...

Shock associated noise is an important part of choked jet noise. Sound field and spectra thereof were investigated experimentally by utilizing the heterodyne analysis technique, so that both the screech and the wide-band noise can be recorded and studied. The sound pressures and spectra vary widely with the stagnation pressure, but the overall sound pressure level at 90?to the jet shows good regularity, it is nearly a constant between pressure ratios 3 and 8.5, given by 97 + 201og d, dB, d being nozzle diameter in mm., and empirical formulae are given to facilitate the SPL prediction on the whole range of pressures. The wide-band shock associated noise was found to be predominant in the range of pressure ratio between 2.5 and 7, and screech only up to slightly more than 5. For pressure ratios less than 2 or more than 8.5, the jet noise is entirely dominated by turbulent noise. New formulae for screech frequency and peak frequency of wide-band shock associated noise are given, which agree well with experiments. The existance of non-harmonic components in screech is explained. Interference effect seems to exist in the upstream direction between shock associated noise and turbulent noise, but not in the 90°direction. This phenomenon is explained by considering the phase relations of the noise.

: Formulas for calculating the interference noise power in base band and interference reduction factor of frequency modulated TV system interfered by RF signals are derived. The RF signal may be a FM telephone signal, a FM television signal or an impulse radar signal. Some useful conclusions based on theoretical analysis are also presented. The approximation used in calculating the interference reduction factor is discussed, and then some typical interference objectives including RF protection ratio and base...

: Formulas for calculating the interference noise power in base band and interference reduction factor of frequency modulated TV system interfered by RF signals are derived. The RF signal may be a FM telephone signal, a FM television signal or an impulse radar signal. Some useful conclusions based on theoretical analysis are also presented. The approximation used in calculating the interference reduction factor is discussed, and then some typical interference objectives including RF protection ratio and base band signal-to-noise ratio are calculated in detail.In the formulas derived, almost all important variables which affect the value of the interference reduction factor have been taken into account. These variables are carrier frequency off-set value, pre-emphasis factor, weighting factor, video spectral distribution and nominal peak to peak frequency deviation. If neglecting all the variables except nominal peak to peak frequency deviation, the derived formula may be reduced very closely to the approximate expression of results from objective measurements given by CGIR Rep. 634-1. This shows that the formulas given in this paper are a theoretical development to that local experimental knowledge. It is now possible to compute the interference into FM TV systems and the computation is as reliable as that in telephony. It is believed that the derived formulas will be usefulto interference analysis and co-ordination.

A method of determining irregular wave force on a cylindrical pier based on wave diffraction theory and distribution theory of maxima for a steady stochastic process is presented. The conclusions given here agree fairly well with the irregular wave force model test data. The equation of spectrum density of wave force, the characteristics of statistic distribution of wave, wave force or wave moment and the coherency between the zero moment of wave force spectrum and peak frequency ω_0 of wave spectrum are...

A method of determining irregular wave force on a cylindrical pier based on wave diffraction theory and distribution theory of maxima for a steady stochastic process is presented. The conclusions given here agree fairly well with the irregular wave force model test data. The equation of spectrum density of wave force, the characteristics of statistic distribution of wave, wave force or wave moment and the coherency between the zero moment of wave force spectrum and peak frequency ω_0 of wave spectrum are discussed in this paper.