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Noise Measurements and Noise Measurement Systems [PDF]
The Journal of the Acoustical Society of America, 1969 Only a brief description of the measurement of sound level and sound-pressure level is given in S1.2-1962, American Standard Method for the Physical Measurement of Sound. The initial task of S1-W-51 is to prepare a partial revision of S1.2-1962, which includes recommended procedures for measuring weighted and band-limited sound-pressure levels under ...
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In-process fast surface measurement using wavelength scanning interferometry [PDF]
, 2012 A wavelength scanning interferometry system for fast areal surface measurement of micro and nano-scale surfaces which is immune to environmental noise is introduced in this paper. It can be used for surface measurement of discontinuous surface profiles
Gao, F. +4 more
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Mechanical Processing of Hard Coal as a Source of Noise Pollution. Case Study in Poland
Energies, 2021 This article presents the results of noise tests, measurements and proposals of solutions that have an impact for reducing noise at one of the Jastrzębska Spółka Węglowa S.A. mines.
Witold Biały +2 more
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Mobile Device-Based Train Ride Comfort Measuring System
Applied Sciences, 2022 As an important train performance quality, comfort depends on vibration and noise data measured on a running train. Traditional vibration and noise measurement tools are facing challenges in terms of collecting big data, portability, and cost.
Yuwei Hu +4 more
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Noise Figure Measurement of Differential Amplifiers Using non-Ideal Baluns
, 2011 This paper analyzes the noise and gain measurement of microwave differential amplifiers using two passive baluns. A general model of the baluns is considered, including potential losses and phase/amplitude unbalances.
García Pérez, Oscar Alberto +7 more
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Sound pressure level in a municipal preschool
International Archives of Otorhinolaryngology, 2013 Summary Aim: To evaluate the sound pressure level to which preschool students are exposed. Method: This was a prospective, quantitative, nonexperimental, and descriptive study.
Adriana Aparecida Tahara Kemp +4 more
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Self-noise produced by an airfoil with nonflat plate trailing-edge serrations [PDF]
, 2013 This paper represents the results of an experimental study aimed at reducing the airfoil self-noise by the trailing edge serration of four different sawtooth geometries (defined in the serration angle and length).
Vathylakis, A +3 more
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Nature, 1936 THOSE interested in noise measurement will be aware that a new unit of equivalent loudness, the British Standard Phon, has been introduced by the British Standards Institution (Glossary of Acoustical Terms and Definitions B.S. 661—1936). The standard of reference is a plane sound wave of 1,000 cycles per sec, heard alternately with the noise to be ...
B. G. CHURCHER, A. J. KING
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The Measurement and Analysis of the Disc/Pad Interface Dynamic Centre of Pressure and its Influence on Brake Noise. [PDF]
, 2008 This paper discusses the measurement of the dynamic centre of pressure (CoP) of a brake pad during a normal braking event using a modified 12-piston opposed calliper. The modifications allow the centre of pressure to be controlled both radially and along
John D. Fieldhouse +5 more
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Measurement error and statistical disclosure control [PDF]
, 2010 Statistical agencies release microdata to researchers after applying statistical disclosure control (SDC) methods. Noise addition is a perturbative SDC method which is carried out by adding independent random noise to a continuous variable or by ...
Shlomo, Natalie, Natalie Shlomo
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