Beamforming in a reverberating environment with the use of measured steering vectors

Guidati, Sandro; Guidati, Gianfranco; Wagner, S.

doi:10.2514/6.2001-2166

Cited by 3 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, reverberant walls create undesired noise sources close to the actual source, but can be lowered by either working in a anechoic tunnel or using some dereverberation algorithms. In the case of a rectangular test section, Guidati et al [13] have proposed a method where the image sources due to the wall were estimated theoretically and their effect was incorporated into the beamforming process. The beamforming maps obtained with this so-called reflection canceller on experimental trailing edge noise were better resolved.…”

Section: Introductionmentioning

confidence: 99%

An improved eigenvalue background noise reduction method for acoustic beamforming

Fischer

Doolan

2020

Mechanical Systems and Signal Processing

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

An improved eigenvalue background noise reduction method for acoustic beamforming

Fischer

Doolan

2020

Mechanical Systems and Signal Processing

View full text Add to dashboard Cite

“…The condition, to a great extent, limits the using of traditional planar microphone array in the practical engineering application. For non-free-field measurement environment, microphones on the array receive not only the sound signals radiated by the target acoustic source but also signals coming from the outside interference acoustic source, which inevitably reduce the accuracy and applicability of the microphone array in acoustic source identification [7,8].…”

Section: Introductionmentioning

confidence: 99%

A new beamforming microphones array with acoustic insulation baffle

Shen¹,

Chu²,

Yang³

et al. 2017

J. vibroeng.

View full text Add to dashboard Cite

To eliminate the influence of the interference acoustic source behind the array on the source identification performance, some modifications on the traditional single-layer beamforming microphone array are made, a new array with acoustic insulation baffle in the microphone plane is given out to suppress the influence of interference acoustic source. Simulation and verification results show that, with the presence of the interference acoustic source in the rear of traditional planar array, the acoustic source position and amplitude deviations are larger and it indicates that the interference acoustic source seriously affects the identification performance of target acoustic source. Compared to the performance of traditional planar array, the new microphone array with acoustic insulation baffle can effectively eliminate the influence of interference acoustic source behind the array and improve the accuracy of the location and amplitude of the target acoustic source. The experiment verifies the correctness of the simulation conclusions and the applicability of the modified microphone array in the cabin of automotive and aircraft and other narrow space.

show abstract