3D Acoustic Field Intensity Probe Design and Measurements

Kotus, Józef; Czyżewski, Andrzej; Kostek, Bożena

doi:10.1515/aoa-2016-0067

Cited by 15 publications

(14 citation statements)

References 10 publications

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“…These facts prompted the authors to undertake the presented research. Some achievements in this field have already been presented in [15,17,18].…”

Section: Modification Of the Pressure-pressure Methodsmentioning

confidence: 99%

“…Today, we also know more advanced solutions using microphone arrays and digital signal processing algorithms for spatial filtering-beamforming or acoustic holography [6]. However, these methods require an increasing number of pressure transducers and multi-channel acoustic signal acquisition Sensors 2020, 20, 271 2 of 15 and processing systems and also the large size and complexity of the support constructions. For this reason, the use of such techniques is difficult or impractical in many fields.…”

Section: Introductionmentioning

confidence: 99%

“…A final conformity of transducers (removing the discrepancies between them) is obtained by digital filtering. This approach is presented, for example, in the works [14][15][16]. Like any measurement method, despite its many advantages, it also has some disadvantages.…”

Section: Introductionmentioning

confidence: 99%

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Performance Analysis of Cost-Effective Miniature Microphone Sound Intensity 2D Probe

Mickiewicz

Raczyński

Parus

2020

Sensors

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This article presents the functional properties of modified versions of the 2D pressure–pressure intensity probe allowing us to determine the vector of sound intensity on a plane using a mechatronic system with one or two miniature electret microphones. The introduction contains basic information about the application areas of the sound intensity and its measurement problems. Next, the principle of operation of the probes and the construction of the prototype measurement system are described. It was subjected to comparative analysis for the stability of obtained results and accuracy of directional characteristics in free field conditions. For this purpose, experiments were conducted to analyze the flow of acoustic power in an anechoic chamber using both (one- and two-microphone) probes. The results were used for a comparative metrological analysis of the described methods and to indicate the advantages and disadvantages of both constructions. The next part of the article presents an experiment concerning the measurement of the sound intensity impulse response of a room, which is an example of practical use of the probe to analyze reflections in the room, which can be used in sound engineering and architectural acoustics.

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“…These facts prompted the authors to undertake the presented research. Some achievements in this field have already been presented in [15,17,18].…”

Section: Modification Of the Pressure-pressure Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance Analysis of Cost-Effective Miniature Microphone Sound Intensity 2D Probe

Mickiewicz

Raczyński

Parus

2020

Sensors

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“…The main reason for this is the scalar dimension of sound pressure. In order to obtain information about the significance and direction, measurements based on vector values such as acoustic intensity and acoustic velocity of particles [1,2,5,9,16] should be used.…”

Section: Introductionmentioning

confidence: 99%

Analysis of acoustic propagation of automotive cooler during run up and run down

Paluch¹,

Kłaczyński²

2021

Diagnostyka

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The modern automotive industry invests more and more in electric drive technology. As a result, new challenges arise in terms of vibroacoustic optimization of the car interior. Components that were once masked by the internal combustion engine are starting to dominate the interior of vehicles. There is therefore a great need for noise reduction. For this purpose, a number of methods of its reduction are used, i.e. component optimization (source), use of active noise reduction systems or passive soundproofing materials. In order to perform the abovementioned noise reduction measures, appropriate measurements and signal analysis should be carried out. This presentation aims to present the measurement of an automotive air cooler in transient states on the stand. Measurements were made using a 3D intensity probe based on the direct measurement of the acoustic particle velocity, in 3 planes in front of the cooler. Then, order tracking analysis was performed for the run-up and coast-down. The results in the form of selected orders of intensity and acoustic particle velocity were compared with classical results made with the use of a microphone at the same measurement points locations.

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“…A similar methodology was applied by the authors for the measurements and visualization of sound intensity around a human head simulator in a free field (Kotus, Kostek, 2015). The authors applied 3D Acoustic Vector Sensor for the sound intensity measurements, which was shown in detail in another recent publications (Szczodrak et al, 2016;Kotus et al, 2016). The methodology used for the purpose of this paper along with the equipment applied in the research were described in detail in Secs.…”

Section: Introductionmentioning

confidence: 99%

Sound Intensity Distribution Around Organ Pipe

Odya

Kotus

Szczodrak

et al. 2017

Archives of Acoustics

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The aim of the paper was to compare acoustic field around the open and stopped organ pipes. The wooden organ pipe was located in the anechoic chamber and activated with a constant air flow, produced by an external air-compressor. Thus, a long-term steady state response was possible to obtain. Multichannel acoustic vector sensor was used to measure the sound intensity distribution of radiated acoustic energy. Measurements have been carried out on a defined fixed grid of points. A specialized Cartesian robot allowed for a precise positioning of the acoustic probe. The resulted data were processed in order to obtain and visualize the sound intensity distribution around the pipe, taking into account the type of the organ pipe, frequency of the generated sound, the sound pressure level and the direction of acoustic energy propagation. For the open pipe, an additional sound source was identified at the top of the pipe. In this case, the streamlines in front of the pipe are propagated horizontally and in a greater distance than in a case of the stopped pipe, moreover they are directed downwards. For the stopped pipe, the streamlines of the acoustic flow were directed upwards. The results for both pipe types were compared and discussed in the paper.

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3D Acoustic Field Intensity Probe Design and Measurements

Cited by 15 publications

References 10 publications

Performance Analysis of Cost-Effective Miniature Microphone Sound Intensity 2D Probe

Performance Analysis of Cost-Effective Miniature Microphone Sound Intensity 2D Probe

Analysis of acoustic propagation of automotive cooler during run up and run down

Sound Intensity Distribution Around Organ Pipe

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