Sound quality control by micro-perforation panel housing device

Zhibo Wang, Yat Sze Choy

Research output: Unpublished conference presentation (presented paper, abstract, poster)Conference presentation (not published in journal/proceeding/book)Academic researchpeer-review

Abstract

The passive noise control system in duct is conventionally to improve the transmission loss or insertion loss. However, the sound quality enhancement to meet the human perception is rarely explored. This study presents an investigation and optimization for sound quality of the ducted-fan noise by micro-perforation panel (MPP) housing device. Through the vibro-acoustic coupling as well as the sound absorption by the micro-perforations, the noise suppression can be achieved. Since loudness is the most relevant sound quality metric, it is served as the objective function in the optimization analysis. A two-dimensional theoretical model, capable of dealing with strong coupling among the vibrating micro-perforated panel, sound radiation from the rotating fan with a dipole nature, and sound fields inside the cavity and the duct is developed. The theoretical results are validated by the numerical simulation based on the finite element analysis and the experimental measurement in the anechoic chamber. The assessment by using Zwicker’s loudness model shows that the proposed housing device is able to accomplish sound quality improvements of the ducted-fan system.

Original languageEnglish
Publication statusPublished - 1 Jan 2018
Event47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018 - Chicago, United States
Duration: 26 Aug 201829 Aug 2018

Conference

Conference47th International Congress and Exposition on Noise Control Engineering: Impact of Noise Control Engineering, INTER-NOISE 2018
CountryUnited States
CityChicago
Period26/08/1829/08/18

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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