Patch NAH for Noise Source Mapping in Cabin Environments

2005-01-2538

05/16/2005

Event
SAE 2005 Noise and Vibration Conference and Exhibition
Authors Abstract
Content
Noise levels and noise characteristics in a car cabin are important competitive discriminators in the automotive industry today. Efficient tools for mapping and analyzing the underlying source distributions are therefore very important for automotive manufacturers. The present paper describes a system based on a hand-held microphone array with integrated position measurement and using the Statistically Optimal NAH (SONAH) calculation method to perform patch holography. The SONAH method has the big advantage as compared to traditional NAH that spatial window effects are small even when the measurement area does not fully cover the source area. The paper also presents practical measurements.
Meta TagsDetails
DOI
https://doi.org/10.4271/2005-01-2538
Pages
8
Citation
Hald, J., Nielsen, F., and Blaabjerg, C., "Patch NAH for Noise Source Mapping in Cabin Environments," SAE Technical Paper 2005-01-2538, 2005, https://doi.org/10.4271/2005-01-2538.
Additional Details
Publisher
Published
May 16, 2005
Product Code
2005-01-2538
Content Type
Technical Paper
Language
English