Now showing items 1-10 of 5722
Time-frequency and time-scale analysis of Barkhausen noise signals
(PROFESSIONAL ENGINEERING PUBLISHING LTD, 2009)
Carrying out information about the microstructure and stress behaviour of ferromagnetic steels, magnetic Barkhausen noise (MBN) has been used as a basis for effective non-destructive testing methods, opening new areas in ...
Construction of perfect space-time codes
In this work, we propose an innovative methodology to extend the construction of minimum and non-minimum delay perfect codes as a subset of cyclic division algebras over ℚ(ζ3), where the signal constellations are isomorphic ...
Signals in Communication Engineering History
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2010)
This paper is a study of various electric signals, which have been employed throughout the history of communication engineering in its two main landmarks: the telegraph and the telephone. The signals are presented in their ...
Noise reduction in speech signals using a TMS320C31 digital signal processor
This paper describes a speech enhancement system (SES) based on a TMS320C31 digital signal processor (DSP) for real-time application. The SES algorithm is based on a modified spectral subtraction method and a new speech ...
Spectral estimation of terahertz time-domain signals using a simple parametric method
(Institution of Engineering and Technology, 2015-12)
A simple method for spectral estimation of terahertz signals using an autoregressive model is developed. The technique shows a better spectral variance and resolution over the use of the Fast Fourier Transform, which is ...
Wnt-regulated dynamics of positional information in zebrafish somitogenesis
(Company Of Biologists, 2014-03)
How signaling gradients supply positional information in a field of moving cells is an unsolved question in patterning and morphogenesis. Here, we ask how a Wnt signaling gradient regulates the dynamics of a wavefront of ...
Common architecture for discrete wavelet transform analysis and synthesis with sequential and constant processing elements
This paper adresses the problem on processing biological data such as cardiac beats, audio and ultrasonic range, calculating wavelet coefficients in real time, with processor clock running at frequency of present ASIC's ...
Time - Frequency analysis of biosignals