Estudio de la atenuación lograda por un sistema de control activo de ruido implementado en audífonos supra aurales cerrados

On this work, the operation of the adaptive LMS algorithm and its implementation in a system of Active Noise Cancellation (CAR) was studied. It’s use as method of characterizing systems with respect to specific stimuli, such as pure tones, pink noise and ambient noise city, these was reproduced in a controlled environment is also discussed. CAR system could not be implemented in real time, due to limitations of Matlab, which was the language chosen for programming the adaptive filter. The results of the measurements revealed weaknesses in the method used for collecting data, which did not reach the expected performance, trying to simulate the actions of the algorithm in real time, with experiments performed by separate play-capture, processing and playback stages -data collection.

• Autores: Pérez Arango, Alejandro; Natera Urueta, Erick Javier
• Fecha de publicación: 2017
• Institución: Universidad de San Buenaventura
• Repositorio: Repositorio USB
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.usb.edu.co:10819/4127
• Acceso en línea: http://hdl.handle.net/10819/4127
• Palabra clave: Control activo de ruido; Procesamiento digital de señales; Filtros digitales; Filtrado adaptativo; Active noise control/cancellation; Digital signal processing; Acoustics; Audio; Digital filters; Adaptive filtering; Sistemas de procesamiento de audio; Audio digital; Fuentes de ruido; Filtros acústicos; Intensidad acústica; Audio; Aislamiento acústico; Acústica; Ruido
• License: Atribución-NoComercial-SinDerivadas 2.5 Colombia