De-Dopplerization and acoustic imaging of aircraft flyover noise measurements☆
References (7)
A restoration procedure for (non-stationary) signals from moving sources
Journal of Sound and Vibration
(1983)- et al.
The acoustic telescope
Journal of Sound and Vibration
(1976) Doppler frequency shift for aircraft noise in a refractive atmosphere
AIAA/NASA Paper No. 84-2354
(1984)
Cited by (79)
Sound localization and quantification analysis of an automotive engine cooling module
2022, Journal of Sound and VibrationImplications of the directivity of railway noise sources for their quantification using conventional beamforming
2019, Journal of Sound and VibrationCitation Excerpt :Commonly, the array is placed 5–10 m away from the rail. For a high speed train running at 300 km/h, the valid time window based on a tracking angle smaller than ±20° is less than 0.1 s, which is quite short compared with the ones used during aircraft fly-over measurements [18]. On a typical beamforming map (see Refs. [17,19] for example), the noise radiated from the wheels can often be seen as well as the aerodynamic noise.
Beamforming for point force surface sources in numerical data
2019, Journal of Sound and VibrationCitation Excerpt :In 1976, Billingsley & Kinns [7] presented a real-time source localisation system, based on an array of microphones and a computer, and applied it for the sound source localisation of a Rolls-Royce/SNECMA Olympus jet engine. Beamforming with array measurements for aeroacoustic source localisation on high-speed trains was carried out in the 1970s and 1980s by King & Bechert [8] and Barsikow et al. [9], and was first applied to the localisation of sound sources on moving aircraft by Howell et al. [10] using aircraft flyover measurements. Application to automobiles began in the 2000s, with it being applied to moving vehicles [11–14], where it was found that the dominant noise sources originated from the tire/road contact patch and at very high speeds aerodynamically generated noise sources became apparent around the side mirror.
Acoustic beamforming for noise source localization – Reviews, methodology and applications
2019, Mechanical Systems and Signal ProcessingCitation Excerpt :sound waves originating from the assumed source position are added up, following the conventional D&S procedure. In this process, the microphone signals are interpolated for the time series given in the moving source reference system [171] and therefore the sampling rate of the data acquisition equipment should be at least four times higher than the maximum frequency of interest. Performance evaluation and uncertainty estimation of D&S for moving source emission evaluation was described in [176].
Locating and tracking sound sources on a horizontal axis wind turbine using a compact microphone array based on beamforming
2019, Applied AcousticsCitation Excerpt :Wind turbine aerodynamic noise,train passing noise, aircraft flying noise, aircraft blade aerodynamic noise are produced by moving objects. When moving sound sources are identified and located, the functional relationship between the sound source signal and microphone receiving signal can be determined according to the distance between the microphone array and sound source, and the Doppler effect can be eliminated [11,12]. The moving sound source is then reconstructed using the acquired microphone sound signals, and as a final step, it is precisely identified and measured.
Signal reconstruction of moving sound sources with a fixed microphone array
2019, Mechanical Systems and Signal Processing
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Presented at the Ninth AIAA/NASA Aeroacoustics Conference, Williamsburg, U.S.A., October 1984, as AIAA/NASA Paper No. 84-2355