نتایج جستجو برای: environmental sound

تعداد نتایج: 470066  

Journal: :Trends in amplification 2012
Valeriy Shafiro Stanley Sheft Brian Gygi Kim Thien N Ho

Perceptual training with spectrally degraded environmental sounds results in improved environmental sound identification, with benefits shown to extend to untrained speech perception as well. The present study extended those findings to examine longer-term training effects as well as effects of mere repeated exposure to sounds over time. Participants received two pretests (1 week apart) prior t...

Journal: :EURASIP Journal on Audio, Speech, and Music Processing 2010

Journal: :IEEJ Transactions on Electrical and Electronic Engineering 2019

Journal: :international journal of occupational hygiene 0
milad derakhshan jazari msc of occupational health engineering, tehran university of medical sciences, tehran, iran mahdyeh boubehrejh national center of air and climate change, department of the environment, tehran, iran maryam avishan national center of air and climate change, department of the environment, tehran, iran jamshid gholampour [email protected] mohammad reza monazzam esmail pour professor of occupational health engineering, tehran university of medical sciences, tehran, iran mohsen meshkani [email protected]

original article   introduction: wind-turbine noise emission and its environmental impact are considerable issues nowadays. considering the importance of the issue, the purpose of this study was to prepare noise map and wind turbines sound characteristics on the largest wind farm of iran. method: this study was carried out in two phases:1) in order to prepare the daytime sound level (ld) noise ...

Journal: :مهندسی بیوسیستم ایران 0
عیسی زارع قلعه عبدشاهی کارشناس مرکز تحقیقات رضا یگانه معاون آموزشی دانشکده کشاورزی/ دانشگاه ایلام

birds, sometimes numbering in millions, can cause serious damage to grain fields. in order to find a method to accordance with environmental issues and effective in controlling these birds, in this research, the effect of sound was studied for keep birds away. the broadcast unit was developed with the following design criteria: 1) three sound levels of hawk, gas gun and sparrow distress, with f...

Journal: :The Journal of the Acoustical Society of America 2008
Chen-Fen Huang Peter Gerstoft William S Hodgkiss

The effect of ocean sound speed uncertainty on matched-field geoacoustic inversion is investigated using data from the SW06 experiment along a nearly range-independent bathymetric track. Significant sound speed differences were observed at the source and receiving array and several environmental parameterizations were investigated for the inversion including representing the ocean sound speed a...

ژورنال: طب کار 2017
برخورداری, ابوالفضل, جبالی, علی, عباسی, آسیه,

Abstract Background Sound is one of the most important work-related risk factors and most widespread physical factors threatening the health of workers. Almost one of the best ways to control the sound, is sound absorber. Due to the extensive entrance nano in various fields of science one their applications design and use sound-absorbing panels containing nanoparticles.The aim of this stu...

2008
A. Minard P. Susini N. Misdariis G. Lemaitre

The aim of this study is to adapt the principles of sound timbre description, originally used for musical sounds, to environmental sounds. In order to reach this goal, we inventoried 4 timbre studies of diverse environmental sounds in terms of stimuli, experiments and perceptual results. Then, we tried to systematize sound description by comparing the different perceptual spaces in order to ide...

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