Study the tensile damage and fracture behavior of FRP composite materials by the acoustic emission technology, broadband sensors record the acoustic emission signals when composite materials in the process of tensile damage at different fiber angle. The acoustic emission characteristics of FRP composite materials’ tensile damage was analyzed by 3D parameter methods. Analysis the amplitude of co...

Current techniques for training representations of the articulatory-acoustic mapping from data rely on arti cial simulations to provide codebooks of articulatory and acoustic measurements, which are then modelled by simple functional approximations. This paper outlines a stochastic framework for adapting an arti cial model to real speech from acoustic measurements alone, using the EM algorithm....

Nonlinearity parameter can be used for the estimation of the gas void fraction in gassy sand sediment. If two primary acoustic waves of different frequencies are incident on gassy sediment, nonlinear acoustic waves can be strongly generated at the difference frequency of the primary frequencies. Nonlinearity parameter of gassy sediment is related to the gas void fraction provided the primary fr...

Conditional random field (CRF) formulations for singlemicrophone speech separation are improved by large-margin parameter estimation. Speech sources are represented by acoustic state sequences from speaker-dependent acoustic models. The large-margin technique improves the classification accuracy of acoustic states by reducing generalization error in the training phase. Non-linear mappings inspi...

Many studies were conducted on acoustic differences between female and male voices. However, they were generally led on speakers of only one language, and focused on a single acoustic parameter. The present study is an acoustic analysis of dissyllabic words or pseudo-words produced by Northeastern American English speakers and Parisian French speakers. Resonant frequencies, mean F0, F0 range, V...

Context. The so-called shift parameter is related to the position of the first acoustic peak in the power spectrum of the temperature anisotropies of the cosmic microwave background (CMB) anisotropies. It is an often used quantity in simple tests of dark energy models. However, the shift parameter is not directly measurable from the cosmic microwave background, and its value is usually derived ...

Transcription-based studies have shown that tense stops appear before aspirated or lax stops in most Korean-acquiring children's speech. This order of mastery is predicted by the short lag Voice Onset Time (VOT) values of Korean tense stops, as this is the earliest acquired phonation type across languages. However, the tense stop also has greater motor demands than the other two phonation types...