This paper is concerned with the acoustical analysis on sub-harmonic of glottal source in Mandarin tones. The methods used in this research are: 1) extracting glottal source of tones by inverse filtering; 2) analyzing subharmonic and spectrum tilt by FTT; 3) simulating the double peak pulse by 4 functions and describing the natures of them in both time and frequency domains. There are 3 conclus...

A numerical method for finding the solution of nonlinear VolterraHammerstein integral equations is proposed. The properties of the hybrid functions which consists of block-pulse functions plus rationalized Haar functions are presented. The hybrid functions together with the operational matrices of integration and product are then utilized to reduce the solution of nonlinear Volterra-Hammerstein...

In this paper we introduce a novel method for high data rate transmission in ultra-wideband (UWB) communications systems. This is achieved through a new approach based on hybrid techniques between pulse position modulation (PPM), pulse amplitude modulation (PAM) and pulse shape modulation (PSM) using combinations between a minimum possible number of modified hermite polynomial (MHP) functions b...

We have investigated the intraband dynamics of non-equilibrium carriers in semiconductors, using a picosecond far-infrared (FIR) free-electron laser synchronized with a femtosecond near-infrared (NIR) Ti : sapphire laser. An intense NIR pulse creates carriers, which interact with a delayed FIR pulse. We detect time-resolved cyclotron resonance by monitoring the intensity of the transmitted and ...

Indoor diffuse optical intensity channels are bandwidth constrained due to the multiple reflected paths between the transmitter and the receiver which cause considerable inter-symbol interference (ISI). The transmitted signal amplitude is inherently non-negative, being a light intensity signal. All optical intensity root Nyquist pulses are timelimited to a single symbol interval which eliminate...

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In this paper, we describe a pulse stream neural network approach for realising combinational and sequential logical functions, to be henceforth referred to as Digital Pulse Logic. The elemental unit or neuron is based on a modified Phase Locked Loop, using which we design digital gates and sequential blocks. Such implementations offer very wide noise margins and are thus more robust in compari...

The trigger system must provide appropriate timing signals to the injector, the RF drive system, the klystron modulators, the beam transport system, the end-station equipment, and the data-transmission system. Two independent timing functions are to be provided: one is pulse-rate selection and the other is synchronization—the adjustment of the relative timing of various devices with respect to ...

introduction: the primary somatosensory cortex has an important role in nociceptive sensory-discriminative processing. altered peripheral inputs produced by deafferentation or by long-term changes in levels of afferent stimulation can result in plasticity of cortex. capsaicin-induced depletion of c-fiber afferents results in plasticity of the somatosensory system. plasticity includes short-term...

Background: Pulse Oximeter monitoring has become so common over previous decades that in some health care units, blood oxygen level is now considered as the fifth vital sign. However, it seems there is still some lack of knowledge and/or experience among medical staff operating pulse oximeter and interpreting its results. The aim of this study was to investigate and compare the knowledge on Pul...