This paper provides a review of the Teager–Kaiser (TK) energy operator and its extensions
for signals and images processing. This class of operators possesses simplicity and good …

Stock market forecasting is a vital component of financial systems. However, the stock prices
are highly noisy and non-stationary due to the fact that stock markets are affected by a …

In this paper, a novel method is presented to analyze the amplitude modulated and
frequency modulated (AM–FM) multicomponent signals using a combination of the …

Overlapped speech is referred to a monophonic audio signal in which at least two speakers
are present at the same time. In this study, the focus is on distinguishing overlapped from …

In this paper we propose a novel adaptive nonparametric regularization (NPR) method for
solving optimization problems with linear constraint. The regular parameter in NPR …

Viterbi algorithm (VA) applied to time–frequency (TF) representation is a highly performed
instantaneous frequency (IF) estimator for discrete-time signals, but it suffers from switch …

Insomnia, whether situational or chronic, affects over a third of the general population in
today's society. However, given the lack of non-contact and non-inductive quantitative …

The null space pursuit (NSP) algorithm is an operator-based signal separation approach
which separates a signal into a set of additive subcomponents using adaptively estimated …

The operator-based signal separation approach uses an adaptive operator to separate a
signal into a set of additive subcomponents. In this paper, we show that differential operators …

Multicomponent AM–FM demodulation is an important tool in many engineering
applications. To improve the demodulation accuracy of the commonly used methods, such …