نتایج جستجو برای: acoustic correlation
تعداد نتایج: 473159 فیلتر نتایج به سال:
This study presents a dual channel decoder capable of modeling cross-speaker dependencies for segmentation and classification of fillers and feedbacks in conversational speech found in the DEAL corpus. For the same number of Gaussians per state, we have shown improvement in terms of average F-score for the successive addition of 1) increased frame rate from 10 ms to 50 ms 2) Joint Maximum Cross...
In ultrasonic NDE, simulation studies can play an important role in complimenting experimental validation of techniques under development. The utility of such simulations depends, in part, on the degree to which the simulated defect and noise signals are representative of the measured signals. In this paper, we describe an approach for generating simulated acoustic noise with a spatial correlat...
OBJECTIVE To assess the validity of acoustic rhinometry for measuring nasal valve area in human subjects. STUDY DESIGN A comprehensive study that compared acoustic rhinometry data with computed tomography findings from scans obtained perpendicular to the acoustic axis and perpendicular to the floor of the nose. METHODS Fifty nasal passages of 25 healthy adults with no nasal disease were exa...
1. To demonstrate theoretically emergence of the deterministic Green’s functions (GFs) from noise sources distributed in a volume and on boundaries in inhomogeneous, fluid-solid environments with dissipation. 2. To investigate a relation between the deterministic GFs and a two-point correlation function of noise in a low-frequency regime where stationary-point arguments become inapplicable. 3. ...
We study by means of time-dependent numerical simulations the behavior of the entanglement stemming from the Coulomb scattering between two electrons subjected to a pulse of sinusoidal potential or trapped in the potential generated by surface acoustic waves. In the first case, we show how the entanglement formation depends upon the physical parameters describing the pulse switching on and off....
The relationship between the Green’s function and the average cross-correlation of a diffuse field is shown to be equivalent to the generalized optical theorem. The correspondence to the usual optical theorem holds for the extraction of the imaginary component of the Green’s function at the source for general linear scalar systems from the autocorrelation of field fluctuations. The imaginary co...
Multi-channel acoustic echo cancellation is basically composed of two parts. One part is a multi-channel system identification problem which is nontrivial to solve. The other part, which is also nontrivial, is the so-called double-talk detection problem. Nearend speech detection is based on a test statistic. Recently, a new double-talk test statistic based on the normalized cross-correlation ve...
Sound-induced perturbations of the brain network in non-REM sleep, and network oscillations in wake.
During sleep, the brain network processes sensory stimuli without awareness. Stimulation must affect differently brain networks in sleep versus wake, but these differences have yet to be quantified. We recorded cortical activity in stage 2 (SII) sleep and wake using EEG while a tone was intermittently played. Zero-lag correlation measured input to pairs of sensors in the network; cross-correlat...
In multi-form segment synthesis, output speech is constructed by splicing waveform segments with statistically modeled and regenerated parametric speech segments. The fraction of model-derived segments is called model-template ratio. The motivation of this work is to further increase flexibility of multi-form synthesis maintaining high speech quality for high model-template ratios. An approach ...
The relationship between acoustic and visual speech is important for understanding speech perception, but it also forms the basis behind a type of facial animator, which can predict facial motion during speech given an acoustic input. This relationship was examined by revisiting a linear transformation model of audio-visual speech production. A mathematical model is constructed whereby the visu...
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