Desenvolvimento de equipamento de captura de áudio

Abstract

This paper presents the development of an audio capture device that uses a microphone to acquire analog signals and send digital signals to the computer via Ethernet. The system in question has as premises the acquisition and manipulation of analog signals from sound signals, sending digital signals to the computer that can be processed in the most diverse applications, and the objective is the development of new technologies in this field. Since the common PC boards are not enough for these professional applications, this issue creates the need for developing an audio capture equipment with high quality. Over this development, technologies are analyzed and implemented using power electronics, signal processing, A/D conversion, microcontrollers and interfacing to enable the final implementation of the system to match its requirements. At the end, it has been presented a solution implemented for the proposed audio capture equipment.