Division of high-resolution sequence based on wavelet amplitude spectrum and complex wavelet phase spectrum;

Time delay estimation algorithm which is based on phase spectrum of cross power spectrum density is studied in the paper.

It has been shown that when the phase spectrum in speech is changed and it s amplitude spectrum is kept constant, there is no different auditory perception between the original speech and the reconstructed speech if the envelope of the reconstructed speech signal is not changed.

Research on numerical generation algorithms of multi-support excitation artificial seismic waves based on phase difference spectrum

The phase difference spectrum was introduced to consider the non-stationary properties of frequency contents in simulating artificial random field.

According to shift theorem of Fourier transform,the algorithm employs the phase spectrum difference in polar coordinates of the sequence of two frame images of a moving target to search displacement through detecting the period of the phase spectrum difference or computing the slope of its section.

Measurement of spectral phase of femotosecond laser pulse using SPIDER technique;

Layout of the oscillator and the SPIDER setup are introduced in details, and the spectral phase of the laser pulse obtained through calculation is discussed.