Arana Burgui, Miguel2017-03-292017-03-2920100001-4966 (Print)1520-8524 (Electronic)10.1121/1.3337228https://academica-e.unavarra.es/handle/2454/23989The following article appeared in The Journal of the Acoustical Society of America 127, 2107 (2010); doi: 10.1121/1.3337228 and may be found at http://asa.scitation.org/doi/10.1121/1.3337228The majority of acoustic impact studies developed over the last 50 years have used a similar acoustic parameter Leq, Ldn but the noise mapping methodology has been very uneven. The selection of the measurement points, the measurement periods, or the evaluation indices have not followed a unique criterion. Therefore, it is not possible to compare the sound pollution levels between different cities from those studies, at least in a rigorous sense. Even more, different studies carried out in the same city by different researchers during different years and using different methodologies are not conclusive whether the acoustic pollution increases or decreases. The present paper shows results, with statistical significance, about the evolution of the acoustic pollution obtained for two Spanish cities, Pamplona and Madrid. In both cases, it can be concluded that noise pollution decreases over time (P<0.01).application/pdfeng© 2010 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.Acoustic noiseAcoustic noise controlRemote controlAcousticsEnvironmental noiseinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess