Desenvolvimento de um sistema de comunicação via bluetooth integrado a um abafador de ruido

Abstract

The constant advancement of industrial processes and professional activities in environments with high noise levels highlights the need for solutions that enable efficient communication without compromising hearing protection. In this context, the development of devices that combine comfort, safety, and connectivity is essential. This paper presents the development of a prototype passive noise canceller with a Bluetooth communication system, designed for noisy environments. The project consists of integrating components such as speakers, a Bluetooth module, and a microphone, allowing the user to make calls and listen to audio while maintaining hearing protection. To validate the device's effectiveness, sound attenuation tests were performed using noise sources such as a vacuum cleaner and an angle grinder, achieving an average reduction of up to 22.6 dB in sound pressure levels. Another relevant test was voice call communication, which demonstrated good performance of the built-in microphone and clear audio transmission. The battery life test demonstrated continuous operation for approximately 4 hours.The proposed solution seeks to meet the demand for hearing protection devices that offer, in addition to noise reduction, greater convenience and connectivity, thus contributing to the safety and well-being of professionals in various sectors. [resumo fornecido pelo autor]