We demonstrate that the amplitude shifts in fast two-pulse collisions perturbed linear physical systems with weak nonlinear dissipation exhibit universal soliton-like behavior. The behavior is demonstrated for optical waveguides cubic loss and described by diffusion-advection models quadratic loss. show both systems, expressions collision-induced due to have same form as expression obtained a c...

NREM sleep is characterized by K-complexes (KCs), over the negative phase of which we identified brief activity in the theta range. We recorded high resolution EEG of whole-night sleep from seven healthy volunteers and visually identified 2nd and 3rd stage NREM spontaneous KCs. We identified three major categories: (1) KCs without intra-KC-activity (iKCa), (2) KCs with non-oscillatory iKCa, and...

We decided to perform some supplementary tests on the window overlap. We apply our technique to different time shifts from the 1 hr used in the paper, to 72 hr for all the SG stations. The 72 hr shift gives no overlap, and hence completely independent estimates of A0 and Q for each shift. Fig A1 is the comparison for the recovery of the amplitude, for 9 different shifts. It can be seen that the...

Corticofugal modulation of sub-cortical auditory selectivity has been shown previously in mammals for frequency, amplitude, time, and direction domains in separate studies. As such, these studies do not show if multi-parametric corticofugal modulation can be mediated through the same sub-cortical neuron. Here we specifically studied corticofugal modulation of best frequency (BF), best amplitude...

Corticofugal modulation of sub-cortical auditory selectivity has been shown previously in mammals for frequency, amplitude, time, and direction domains in separate studies. As such, these studies do not show if multi-parametric corticofugal modulation can be mediated through the same sub-cortical neuron. Here we specifically studied corticofugal modulation of best frequency (BF), best amplitude...

Figure 1. Spectral analysis and the Doppler display. The fast Fourier transform (FFT) separates the Doppler signal into its component Doppler-shift frequencies and determines the amplitude at each frequency. Most ultrasound machines calculate Doppler-shifted frequencies over 5 msec increments and convert this to velocity information. These velocities are then displayed in a bin whose brightness...

Abstract : In this paper we show that a complex dynamic representation (logenvelope and instantaneous frequency) can be used efficiently to compress the spectrum and band−shift a discrete−time signal. The original method and algorithm conceived here do not violate the amplitude−phase relationships typical of natural sound signals. This is achieved by simultaneous modification via transmapping o...

This paper describes the prosody modification (pitch and duration) for vocoder based on amplitude spectrum of residual signal. In this vocoder, period component is represented as amplitude spectrum of half pitch period length and aperiod component is estimated from the difference of amplitude spectrum between the constructed period signal and the residual signal. Then, pitch modification is con...