Urban daytime traffic noise prediction models.

An evaluation was made of the acoustic environment generated by an urban highway using in situ measurements. Based on the data collected, a mathematical model was designed for the main sound levels (L (eq), L (10), L (50), and L (90)) as a function of the correlation between sound levels and between the equivalent sound pressure level and traffic variables. Four valid groups of mathematical models were generated to calculate daytime sound levels, which were statistically validated.

[Comparative study of the perception of urban noise].

Objective: To comparatively analyze the perception of daily urban noise between residents of an acoustically and a non-acoustically controlled area.

Methods: Two urban areas were selected through objective assessments of equivalent sound levels and defined as a non-acoustically and an acoustically controlled area. A random sample of each area was selected and a questionnaire was applied to its residents.