نتایج جستجو برای: equivalent sound level

تعداد نتایج: 1290264  

2013

A-weighted equivalent continuous noise levels of nine companies/industries in Jos-Bukuru metropolis were determined by using Impulse Precision Sound Level Meter Type 2209 in conjunction with -Octave Filter set Type 1616 and an audiometric test of five hundred and twenty four workers out of a total of seven hundred and ninety one volunteers interviewed were carried out. The physical measurements...

Journal: :Child development 1990
N B Spetner L W Olsho

Frequency resolution is a fundamental capacity of the auditory system that underlies the perception of all complex sounds. The development of this capacity has not been well characterized in humans. This investigation used a nonsimultaneous pulsation threshold technique to examine the development of infant frequency resolution. Psychophysical tuning curves were obtained for 3- and 6-month-olds ...

Journal: :The Journal of the Acoustical Society of America 2015

Journal: :The Japanese journal of ergonomics 2005

Journal: :IOP Conference Series: Materials Science and Engineering 2020

Journal: :The Journal of the Acoustical Society of America 2013

Journal: :The Journal of the Acoustical Society of America 1979

2007
Michael Cik Kurt Fallast Robert R. Höldrich

Noise is known as one of the most frequently reported negative environmental effects of traffic. At present, according to the current standards and calculation specifications, the impact of road traffic noise is represented by the A-weighted energy-equivalent sound level (LA,eq). This quantity does not account for the subjective annoyance of sound events as it is perceived by the affected perso...

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