Low-cost and easily implemented anechoic acoustic chambers.


Authors

DOI:

https://doi.org/10.22517/23447214.18421

Keywords:

anechoic chamber, acoustics, low cost, free field, inverse square law, cutoff frequency, ISO 3745.

Abstract

In this paper, the design, construction and verification of a low-cost and easy-to-install anechoic chamber are described. The chamber is constructed with affordable, local materials. The quality, according to the deviation from the inverse square law, complies with ISO 3745. The working dimensions of the chamber are 1.94 m long x 1.91 m wide x 1.84 m high. The nominal cutoff frequency is 400 Hz. The cost per square meter of the effective finished volume is 200 USD. With this design, small- and medium-sized enterprises are able to build anechoic chambers with a small investment, adding value to their products through characterization and subsequent mitigation, conditioning or amplification, as necessary, of emitted sound or noise. This study also contributes to the development and appropriation of knowledge in acoustics, a branch of physics of emerging importance in developing countries.

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Author Biographies

Alejandro Orrego González, Univalle

Escuela de Ingeniería Mecánica, estudiante de Maestría en Ingeniería Mecánica

Joao Luis Ealo Cuello, Univalle

Escuela de Ingeniería Mecánica, Profesor y Director del Programa de Posgrados.

Jhon Fernando Pazos Ospina, Escuela Militar de Aviación Marco Fidel Suarez - Fuerza Aérea Colombiana (EMAVI)

EMAVI, Investigador. Escuela de Ingeniería Mecánica Universidad Autónoma de Occidente, Profesor.

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Published

2018-12-30

How to Cite

Orrego González, A., Ealo Cuello, J. L., & Pazos Ospina, J. F. (2018). Low-cost and easily implemented anechoic acoustic chambers. Scientia Et Technica, 23(4), 471–478. https://doi.org/10.22517/23447214.18421

Issue

Vol. 23 No. 4 (2018)

Section

Mecánica

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