Method: The acceptable noise level (ANL) test an... HME Miedema,HC Borst 被引量: 20发表: 2007年 Effect of noise reduction on reaction time to speech in noise In moderate levels of noise, listeners report that noise reduction (NR) processing can improve the perceived quality of a speech ...
Calculation method for noise regions caused by air traffic. Report on the proposal made by the committee investigating air traffic noiseJuhani Parmanen
Two computer programs for wind turbine noise calculations are presented. One of the programs is designed to calculate the noise due to the passage of wind turbine blades through the wake of the tower of a downwind turbine. The other program calculates the noise due to the steady loading of ...
Constraints are derived from the empirical noise level estimation formula and regulated noise levels on the boundary. A sum of transformer noise levels is selected as an objective function to be maximized. The proposed method is successfully tested on a model substation (2 banks).Hideaki Tanaka...
This manual provides instructions to the users of a series of programs that calculate fleet noise level (FNL) and airport noise index (ANI). The concept of FNL provides a method for evaluating the noise status of fleets of aircraft. Using FNL, comparisons can be developed between fleets for...
For the computation of the blade-passage noise in centrifugal fans, a plane potential flow through the impeller is assumed. The sound power will be determined by solution of the inhomogenous equation for the sound field, using the aerodynamic variables: pressure and velocity distribution downstream ...