Psychoacoustic modelling of rotor noise

Torija Martinez, AJ ORCID:, Li, Z and Chaitanya, P 2022, 'Psychoacoustic modelling of rotor noise' , The Journal of the Acoustical Society of America (JASA), 151 (3) , pp. 1804-1815.

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The aviation sector is rapidly evolving with more electric propulsion systems and a variety of new technologies of Vertical Take-Off and Landing (VTOL) manned and Unmanned Aerial Vehicles (UAVs). Community noise impact is one of the main barriers for the wider adoption of these new vehicles. Within the framework of a perception-driven engineering approach, this paper investigates the relationship between sound quality and first order physical parameters in rotor systems to aid design. Three case studies are considered: (i) contra-rotating vs. single rotor systems, (ii) varying blade diameter and thrust in both contra-rotating and single rotor systems, and (iii) varying rotor-rotor axial spacing in contra-rotating systems. The outcomes of a listening experiment, where participants assessed a series of sound stimuli with varying design parameters, allow a better understanding of the annoyance induced by rotor noise. Further to this, a psychoacoustic annoyance model optimised for rotor noise has been formulated. The model includes a novel psychoacoustic function to account for the perceptual effect of impulsiveness. The significance of the proposed model lies in the quantification of the effects of psychoacoustic factors such as loudness as dominant factor, and also tonality, high frequency content, temporal fluctuations, and impulsiveness on rotor noise annoyance.

Item Type: Article
Schools: Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre
Journal or Publication Title: The Journal of the Acoustical Society of America (JASA)
Publisher: Acoustical Society of America
ISSN: 0001-4966
Related URLs:
Funders: Innovate UK, UK Aerospace Technology Institute, Royal Academy of Engineering, United Kingdom
Depositing User: Dr Antonio J Torija Martinez
Date Deposited: 28 Feb 2022 15:02
Last Modified: 17 Sep 2022 02:30

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