ABSTRACT
This paper presents a feasibility study of an innovative system for controlling acoustic contamination produced mainly by construction workplaces. The system is composed by various measurement stations. Each station has a PC, wireless communication module, microphone array, and signal conditioning electronics. All the station are able to transmit measured signals to central station where are processed for detecting anomalous high noise condition and locating the location of the noise source. Methods applied were: detection by threshold, beamforming techniques, triangulation for localization, image processing, and Geographical Information System representation. Experiments were developed in two stages, the first comprised station setup and viability of beamforming at outdoor environments, and the second was the viability of the entire system. Results were quite satisfactory for acoustic source detection and localization using multitone signals, but not for vibrations.
