A First

Remote microphone techniques for the characterization of aeroacoustic sources

Date: Oct. 24, 2022 - Oct. 27, 2022
Location: von Karman Institute for Fluid Dynamics, 72 Waterloosesteenweg Sint-Genesius-Rode, 1640, Belgique
Contact: secretariat@vki.ac.be
Phone: +3223599604

A Third
A Third

The first training session of the European Academy of Aeroacoustics (EA2) (https://www.tudelft.nl/lr/european-academy-of-aeroacoustics) will be held on 24-27 October 2022, at the von Karman Institute for Fluid Dynamics (VKI). The topic of the first training course is "Remote microphone techniques for the characterization of aeroacoustic sources".

This unique four-day training will cover the necessary theoretical background on wave propagation, sensor calibration, design practices, data post-processing, etc. But in contrast with other courses and lecture series, the participants will be actively practicing through supervised lab sessions, implementing different sensors (electret and condenser microphones) in various configurations (flush-mounted, recessed behind a pinhole-cavity or as a side-branch with anechoic termination). Python routines developed by the lecturers will be demonstrated and shared with the participants, for the processing and analysis of the calibration data and their comparison with the models.

The training course will be suitable for PhD students, postdocs and research/test engineers interested in accurate measurement of surface pressure fluctuations, with application to aeroacoustics, fundamental turbulence and boundary layers, flow control, unsteady aerodynamics, etc. Given the organization of laboratory sessions, a maximum of 36 participants will be accepted, on a first-come-first-served basis.

Monday 24 October 2022

09:15 - 10:15 Sensor technology
Assoc. Prof. Daniele Ragni, TU Delft, The Netherlands

10:15 - 10:45 Coffee break

10:45 -12:30 Time- and frequency-domain line-cavity models
Prof. Christophe Schram, VKI and Prof. Mahdi Azarpeyvand, U. Bristol, United Kingdom

12:30 - 14:00 Lunch

14:00 - 15:15 Time- and frequency-domain line-cavity models
Prof. Christophe Schram and Prof. Mahdi Azarpeyvand

15:15 - 15:45 Coffee break

15:45 - 17:00 Time- and frequency-domain line-cavity models: hands-on Python exercises

Tuesday 25 October 2022

09:00 -10:15 MP design guidelines including flow effects
Prof. Mahdi Azarpeyvand and Assist. Prof. Francesco Avallone, TU Delft, The Netherlands

10:15 - 10:45 Coffee break

10:45 -12:00 System identification: signal processing, transfer functions, coherence analysis
Prof. Mahdi Azarpeyvand and Dr. Nick Zan, U. Bristol, United Kingdom

12:00 - 14:00 Lunch

14:00 - 15:15 System identification: Bayesian inference
Dr. Riccardo Zamponi, VKI, Belgium

15:15 - 15:45 Coffee break

15:45 - 17:00 System identification: hands-on Python exercises

Wednesday 26 October 2022

09:00 – 10:15 Introduction to the laboratory and experimental program

10:15 – 12:00 Lab session

12:00 - 14:00 Lunch

14:00 – 17:00 Lab session

Thursday 27 October 2022

09:00 – 12:00 Lab session

12:00 - 14:00 Lunch

14:00 - 15:15 Results analysis

15:15 - 15:45 Coffee break

15:45 - 17:00 Debriefing of lab session

The citizens of the following countries are eligible to attend the von Karman Institute Courses and Events:

- EU member countries
- NATO member countries
- NATO's Mediterranean Dialogue (Algeria, Egypt, Israel, Jordan, Mauritania, Morocco, Tunisia)
- Istanbul Cooperation Initiative (Bahrain, Kuwait, Qatar, United Arab Emirates)
- Argentina, Australia, Bolivia, Brazil, Cabo Verde, Cameroon, Chile, Colombia, Japan, India, Indonesia, Macedonia, Malaysia, Mauritania, Mexico, Montenegro, Mozambique, New Zealand, Nigeria, Republic of Korea, Saudi Arabia, Serbia, Singapore, South Africa, Switzerland, Thailand, Uruguay, South-Africa and Vietnam.

VKI reserves the right to request a clearance check with Belgian authorities.

The participants will have to present their ID card (for EU citizens) or passport (for other citizens) the first day of the lecture series.


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  • on-site - Undergraduate Students (Proof Needed) 300.0
    on-site - PhD Students (Proof Needed) 800.0
    on-site - Recognized Universities / Research Center 1520.0
    on-site - Commercial Organizations 1920.0
    Special Registration 0.0

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    Remote microphone techniques for the characterization of aeroacoustic sources


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