Journal ArticleDOI
De-Dopplerization and acoustic imaging of aircraft flyover noise measurements
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TLDR
In this paper, a single microphone output is de-Dopplerized, and results from a Lockheed TriStar graphically illustrate the capability of the de-dopplerization for the analysis of noise from counterrotating propeller driven aircraft.About:
This article is published in Journal of Sound and Vibration.The article was published on 1986-02-22. It has received 87 citations till now. The article focuses on the topics: Noise & Microphone.read more
Citations
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Journal ArticleDOI
A review of acoustic imaging methods using phased microphone arrays
Roberto Merino-Martínez,Pieter Sijtsma,Mirjam Snellen,Thomas Ahlefeldt,Jérôme Antoni,Christopher J. Bahr,D. Blacodon,Daniel Ernst,A. Finez,S. Funke,Thomas F. Geyer,Stefan Haxter,Gert Herold,Xun Huang,William M. Humphreys,Quentin Leclere,A.M.N. Malgoezar,Ulf Michel,Thomas Padois,A. Pereira,Christophe Picard,Ennes Sarradj,Henri Siller,Dick G. Simons,Carsten Spehr +24 more
TL;DR: This paper provides a review of the most well-known and state-of-the-art acoustic imaging methods and recommendations on when to use them, as well as a broad overview for general aeroacoustic experts.
Journal ArticleDOI
Acoustic beamforming for noise source localization - Reviews, methodology and applications
TL;DR: The main concepts of beamforming, starting from the very basics and progressing on to more advanced concepts and techniques are presented, in order to give the reader the possibility to identify concepts and references which might be useful for her/his work.
Proceedings ArticleDOI
Location of rotating sources by phased array measurements
TL;DR: In this paper, a method for the location of moving sources by a microphone array is described, which can be applied to out-of-flow measurements in an open jet wind tunnel.
References
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Journal ArticleDOI
The acoustic telescope
John Billingsley,R. Kinns +1 more
TL;DR: In this article, a system was developed for real-time sound source location on full-size jet engines, consisting of an array of microphones connected to a small digital computer, via a sequence of preamplifiers, analog filters and analog to digital converters and multiplexer.
Proceedings ArticleDOI
Engine noise source breakdown - Theory, simulation and results
B. Tester,M. Fisher +1 more
Journal ArticleDOI
Flight Effects on Fan Noise with Static and Wind-Tunnel Comparisons
John S. Preisser,David Chestnutt +1 more
TL;DR: In this paper, a flight test program utilizing a JT15D-1 turbofan engine has been conducted with the objectives of studying flight effects on fan noise and evaluating the simulation effectiveness of both a wind tunnel and a static test configuration that incorporated an inlet control device (ICD).
Journal ArticleDOI
A restoration procedure for (non-stationary) signals from moving sources
TL;DR: A procedure has been developed, and is discussed in this paper, that restores non-stationary signals into stationary ones, thus enabling one to apply the analysis techniques mentioned above to moving source data with a reliable outcome.
Program for narrow-band analysis of aircraft flyover noise using ensemble averaging techniques
TL;DR: In this paper, a package of computer programs was developed for analyzing acoustic data from an aircraft flyover, assuming the aircraft is flying at constant altitude and constant velocity in a fixed attitude over a linear array of ground microphones.