Results 201 to 210 of about 71,665 (253)

Development of Acoustic Absorbent Materials Using Pine Needles. [PDF]

Materials (Basel)
Ruiz-Martinez JD, Peceño B, Carrasco CJ, Orejón D, Luna-Galiano Y, Leiva C.   +5 more
europepmc   +1 more source

Short-Term Prognosis in Acute Asthma Exacerbations: A Comparative Evaluation of Machine Learning Models Using Spirometry and Tracheal Respiratory Sound Analysis. [PDF]

Int J Gen Med
Güçsav MO, Güllü MK, Özgür S, Topaloğlu İ, Unat ÖS, Serçe Unat D, Erbaycu AE.   +6 more
europepmc   +1 more source

Impact of Noise Reduction Management on Occupational Protection and Auditory Fatigue in Hospital Central Sterile Supply Department Staff.

Noise Health
Wei N, Yuan X, Sun L, Bei W.
europepmc   +1 more source

Measurements of sound reduction index with intensity technique. Nordtest project 746-88.

, 1991
openaire   +1 more source

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Prediction of the sound reduction index: a modal approach

Applied Acoustics, 2003
Abstract Different methods for the calculation of the sound reduction index using modal analysis are described. The calculations use two steps: a vibratory study to determine the transverse displacement of the plate and a study of radiation. Orthotropic plates are studied in particular and the resulting calculation algorithm has been programmed ...
Thomas Buzzi, Cécile Courné, André Moulinier, Alain Tisseyre   +3 more
exaly   +2 more sources

Prediction of sound reduction index of plenum window by the surface impedance approach

Applied Acoustics, 2021
Abstract The paper predicted the sound reduction indices (SRIs) of plenum windows with various configurations by the surface impedance approach (SIA). Assuming that the glass panes of plenum windows are rigid, two spaces connected through a plenum window can be taken as a three-coupled space. In terms of a multiply connected space, the SIA enables to
Liangfen Du, Siu-Kit Lau
exaly   +2 more sources

Prediction of sound reduction index of double sandwich panel

Applied Acoustics, 2015
Abstract This study deals with the prediction model for SRI of double sandwich panels widely used in living quarters of ships and offshore installations. The proposed prediction model is obtained from the modification of the conventional models based on empirical measurements.
Sungmok Hwang, Sungjoo Lee
exaly   +2 more sources

Calculation of sound insulation according to EN 12354: Influence of sound reduction index of flanking elements

2013 21st Telecommunications Forum Telfor (TELFOR), 2013
EN 12354 standards describe models for calculation of sound insulation in buildings. EN 12354-1 defines a model for airborne sound insulation, while EN 12354-2 describes the calculation procedure for impact sound insulation. Although the calculated value of sound insulation in both cases depends mostly on the insulation properties of the separating ...
Dragana Šumarac Pavlovic, MIOMIR Mijic
exaly   +2 more sources