After presenting results of recent impulse-noise measurements in customer premises, a proposal for a simplified statistical model for impulse noise is presented. The new model is intended to replace the deterministic single impulse, widely known as Cook Pulse, especially in the upcoming standards for SDSL and also maybe VDSL. In addition to the statistical model also herein, sample impulses are...

This paper presents a singing recording system, VocaRefiner, that enables a singer to make a better singing recording by integrating multiple recordings of a song he or she has sung repeatedly. It features a function called clickable lyrics, with which the singer can click a word in the displayed lyrics to start recording from that word. Clickable lyrics facilitate efficient multiple recordings...

In this paper we will argue that the superposition of waves can be calculated in a simple way. We show, using the Gauss’s method to sum an arithmetic sequence, how it is possible to construct the superposition of waves with different frequencies in a simple conceptual way. By this method we arrive to the usual result where we can express the superposition of waves as the product of factors, one...

Automatic Speaker Verification (ASV) systems are prone to spoofing attacks of various kinds. In this study, we explore the effects of different features and spoofing algorithms on a state-of-the-art i-vector speaker verification system. Our study is based on the standard dataset and evaluation protocols released as part of the ASVspoof 2015 challenge. We compare how different features perform w...

We systematically study the pulse advance and pulse compression in light propagation through a transparent, anomalously dispersive medium. Using an Argand diagram, we show that pulse compression is the only form of pulse distortion, while other forms of pulse distortion can be eliminated. Experimentally, we implement a dual-band electronic amplifier to measure the negative pulse group delay and...

We demonstrate the first programmable group-delay module based on polarization switching. With a unique binary tuning mechanism, the device can generate any differential group delay value from 45 to+45 ps with a resolution of 1.40 ps, or any true-time-delay value from 0 to 45 ps with a resolution of 0.7 ps. The delay varying speeds for both applications are under 1 ms and can be as fast as 0.1 ...

White-light interferograms provide a simple, accurate, and physically intuitive picture of what happens to broadband optical pulses on transmission through, or reflection from, common optical materials. Quantitative measurement of group delay are made with an accuracy of 60.1 fs and with high spectral resolution. This measurement accuracy is applied to the determination of d2nydl2 and d3nydl3 o...

In this paper, we aim at analyzing the characteristic of neuronal population responses to instantaneous or time-dependent inputs and the role of synapses in neural information processing. We have derived an evolution equation of the membrane potential density function with synaptic depression, and obtain the formulas for analytic computing the response of instantaneous re rate. Through a techni...

This paper describes a perceptual distance measure for phase spectrum based on results from a subjective experiment using stimuli. The stimuli have flat amplitude spectrum and, in a particular frequency band, have a certain group delay value. The experiment was performed using stimuli with different group delay peak values where the group delay center frequencies are fixed, and their associated...

This paper presents analysis and design of a compact ultra wide band (UWB) filter using three parallel folded coupled lines in a defected ground structure in multi-layer structure. Defected ground has been incorporated under the coupled lines of the filter to improve the coupling over a wide bandwidth. The closed form expressions for even and odd mode impedances for the coupled lines with defec...