نتایج جستجو برای: sound data

تعداد نتایج: 2491051  

احمدی, سعید, لطفی, معصومه, منصوری, نبی الله, منظم, محمدرضا,

Introduction: Using diesel generators is necessary for activities like welding in construction sites and it is often accompanied with noise pollution. The aim of this study was to evaluate noise pollution induced by diesel generators in construction activities in one of the districts of Tehran city.   Material and Method: In this descriptive study, 14 construction sites were selected for th...

Journal: :the modares journal of electrical engineering 2011
bijan abbasi arand abdollah doosti aref

in this paper, for the purpose of investigating horizontal sound propagation, based on the results obtained from practical measurements in the strait of hormoz and available data on sound speed variations at different depths, a comprehensive model for shallow water multipath underwater acoustic channel is presented. mathematical modeling of multipath effect is based on ray theory and the image ...

Erfan, Arefeh, Hamidi, Majid, Kheiri, Soleyman, Najafi, Mostafa, Tavoosi, Elham,

Introduction:Verbal language is Fundamental component for expressing ideas, social interaction and understanding educational materials. Effective communications require verbal language skills. Sound pillows may partly address the children with behavior problems. The purpose of this study was assessing the effect of educational sound pillow in the treatment of stuttering and cognitive phonemes i...

Journal: :Journal of Speech, Language, and Hearing Research 2014

Journal: :Journal of Cosmology and Astroparticle Physics 2021

We study to what extend LISA can observe features of gravitational wave spectra originating from cosmological first-order phase transitions. focus on which are the form double-broken power laws. These predicted by hydrodynamic simulations and also analytical models such as sound shell model. argue that ratio two break frequencies is an interesting observable since it be related wall velocity wh...

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