Over the past years, methods of short-time spectral modification have proven especially effective at reducing noise for the enhancement of speech. Key to these methods are noisereduction gain formulae, a class of frequency-domain data windows, that are applied to successive blocks of the shorttime Fourier transform of the noisy speech. This paper provides a unified treatment of several noise-re...

Shape-adaptive texture coding is often being perceived as a mean to achieve increased coding efficiency, e.g. due to a better representation of correlation properties along the boundary between two objects which should lead to a higher transform gain. However, if data rates demand a lossy cncoding of contours, an improvement in transform gain becomes questionable. This paper investigates the po...

In a randomized experiment, women (N = 441) watched either a loss- or gain-framed video emphasizing the prevention or detection functions of the Pap test to test the hypothesis that loss- and gain-framed messages differentially influence health behaviors depending on the risk involved in performing the behavior. As predicted, loss-framed messages emphasizing the costs of not detecting cervical ...

One of the jobs of a circuit designer is to build a measurement system that provides valid input-to-output data as defined by the system requirements over a given frequency range. The four possible elements of a signal path include a gain/signal conditioning cell, an anti-aliasing filter, an analog-to-digital converter (ADC) and a digital processing block. Figure 1 shows this type of system wit...

The paper presents development of a new tuning method for fractional order PID controller for the systems which have integer order transfer functions. All the parameters of the controller, namely proportional gain kp, integral gain ki, derivative gain kd, fractional order of integrator λ and fractional order of differentiator μ can be obtained by using this method. It is clearly shown that the ...

in this paper, we introduce and characterize fuzzy wea-kly $e$-closed functions in fuzzy topological spaces and the relationship between these mappings and some properties of them are investigated.

Because predictive decon fails on the Ricker wavelet, earlier we devised an extension to non-minimum phase wavelets (Yang et al, 2011). It showed remarkable clarity of seismogram polarity. Here we improve our method by a log spectral parameterization. Another innovation here is correctly handling time-variable gain. Since filtering does not commute with TV gain, gain is now done after decon (no...

Local L2 gain analysis of a class of stabilizing controllers for nonlinear systems with Hopf bifurcations is studied. In particular, a family of Lyapunov functions is first constructed for the corresponding critical system, and simplified sufficient conditions to compute the L2 gain are derived by solving the Hamilton-Jacobi-Bellman (HJB) inequality. Local robust analysis can then be conducted ...