A review and tutorial of the fundamental ideas and methods of joint time-frequency
distributions is presented. The objective of the field is to describe how the spectral content of …

Changing frequencies is one of the most primitive sensations since we are sur-rounded by
light of changing color, by sounds of varying pitch, and by many other phenomena whose …

The time-dependent shift in the spectral content of the surface myoelectric signal to lower
frequencies has proven to be a useful tool for assessing localized muscle fatigue …

The authors derive, implement, and demonstrate a computational approach for the
measurement of emergent image frequencies. Measuring emergent signal frequencies …

Consideration is given to the generalization of stationary cross spectral analysis methods to
a class of nonstationary processes, specifically, the class of semistationary finite energy …

Parameterized time-frequency (TF) transforms, with signal-dependent kernel parameters,
have been proposed to analyze multicomponent frequency modulated (FM) signals. Usually …

This paper reports simulations of the generation of Lamb wave modes in thin plates using a
meander coil (meander line) EMAT, which works under the principle of Lorentz force …

We consider instantaneous frequency and its variance using the bilinear joint time-
frequency distribu-tions. It is well known that these distributions give the instantaneous …

The Wigner distribution provides a visual display of quantitative information about how a
signal's energy is distributed in both time and frequency. Through its low-order moments the …

We have developed dielectric-lined rectangular waveguide structures for terahertz (THz)-
driven ultrafast deflection of 100 keV electron beams. The structures were designed to …