Sound Synthesis Approach for Noise Annoyance Assessment of Rotorcraft Operations

D Sabbatini, K Janssens, Sander Hartjes, H.G. Visser, M Gennaretti, Giovanni Bernardini

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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This paper presents a sound synthesis approach that allows investigating the noise annoyance of rotorcraft in relation to the source components and flight path. The sound synthesis is based on a source-transfer-receiver model, describing the noise emission and directivity of the sources and their propagation towards the receiver point on the ground. Several noise propagation effects are considered such as the Doppler shift, distance effect, atmospheric absorption, ground reflections and the effects of head and body. A case study is presented, showing the complete modeling and synthesis procedure for a four-bladed twin-engine helicopter. The source data was obtained from numerical simulations. Flyover sounds were synthesized for a baseline trajectory and a noise-optimized flight path.
Original languageEnglish
Title of host publicationNOISE-CON 2013
Subtitle of host publication2013 August 26-28, Denver, Colorado
Number of pages8
Publication statusPublished - 2013
EventNoise-Con - Denver, United States
Duration: 26 Aug 201328 Aug 2013


CountryUnited States


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