@inproceedings{467febc86a2144cfb9176d763c69520f,
title = "A new method for monitoring far-field noise level with a few near-field sensors",
abstract = "The noise of electrical equipment operating outdoors in the residential areas, such as the transformers, is a growing concern. The sound of the equipment propagating to people's home should be monitored. It is sometimes convenient to measure the acceleration on the equipment or the sound pressure nearby but inconvenient to measure the sound pressure at the position of interest. This paper presents a new method to estimate the noise of the equipment with the sensors close to the equipment instead of the on-site sensors in the far field. This method employs the ideas of frequency response function measurement, and it first measures the response-response matrix from the neighbouring sensors to microphones at the desired location under different operational conditions. Then the sound pressure level under the new operational conditions can be calculated through the historical response-response matrices. The condition number of the matrix can be used to evaluate the errors and as a criterion to optimize the sensors' positions. The measurement results of a steel cylinder is also shown.",
keywords = "Sound pressure monitoring",
author = "Xiaobin Cheng and Xun Wang and Jun Yang and Jing Tian",
year = "2014",
language = "English",
series = "INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control",
publisher = "Australian Acoustical Society",
editor = "John Davy and Marion Burgess and Charles Don and Liz Dowsett and Terry McMinn and Norm Broner",
booktitle = "INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering",
address = "Australia",
note = "43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 ; Conference date: 16-11-2014 Through 19-11-2014",
}