1 Launch loads, both mechanical and acoustic, are the prime driver of spacecraft structural design. Passive approaches for acoustic attenuation are limited in their low frequency effectiveness by constraints on total fairing mass and payload volume constraints. Active control offers an attractive approach for low frequency acoustic noise attenuation inside the payload fairing. Smart materials s...

investigations on vibration behaviors of railway track systems were attempted in this research. this was made by conducting a comprehensive field investigation into the free vibration of track systems and response of tracks to train moving loads. in-situ modal analysis was used in a railway track field as an efficient method of investigating dynamic properties of railway track systems. natural ...

While all languages of the world use modal phonation, many also rely on other phonation types such as breathy or creaky voice. For example, Gujarati, an Indo-Aryan language, makes a distinction between breathy and modal phonation among consonants and vowels: /bɦaɾ/ ‘burden’, /baɾ/ ‘twelve’, and /ba̤ɾ/ ‘outside’ [1, 2]. This study, which is a replication and an extension of Khan [3], aims to dete...

This paper presents how voice stress is manifested in the acoustic and phonetic structure of the speech signal. Out of few thousand authentic Police 997 emergency phone calls, a few hundred were selected automatically according to their duration (dialogs shorter than 3-4 seconds were omitted). Finally, 45 speakers were chosen for acoustic evaluation, the basis for selection being a perceptual a...

This paper presents how voice stress is manifested in the acoustic and phonetic structure of the speech signal. Out of few thousand authentic Police 997 emergency phone calls, a few hundred were selected automatically according to their duration (dialogs shorter than 3-4 seconds were omitted). Finally, 45 speakers were chosen for acoustic evaluation, the basis for selection being a perceptual a...

IMPORTANCE This research contributes to the pediatric objective voice measurement database while identifying comparable measurements between 2 available voice analysis systems. OBJECTIVE To compare selective normative pediatric acoustic variables between the Multi-Dimensional Voice Program (MDVP) and the Voice Evaluation Suite (VES) computerized voice analysis systems. Additionally, it descri...

the nonlinear static pushover analysis technique is mostly used in the performance-based design of structures and it is favored over nonlinear response history analysis. however, the pushover analysis with fema load distributions losses its accuracy in estimating seismic responses of long period structures when higher mode effects are important. some procedures have been offered to consider thi...