PhD scholarship in sound field analysis and microphone array processing in rooms

DTU Electrical Eng
Friday 24 Aug 18

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The Acoustic Technology group at DTU Electrical Engineering conducts research in experimental methods in acoustics, sound fields, architectural acoustics, signal processing, transduction, vibration and numerical methods. As a part of a new research project granted to Efren Fernandez Grande by the VILLUM foundation, we will initiate several projects on sound field analysis, measurement and reproduction. The research project is titled “large-scale acoustic holography”, and it aims at developing an experimental framework to capture the full three-dimensional acoustic field inside a room or enclosure.

The objective of the PhD project is to develop experimental methods to characterize the spatio-temporal properties of the sound field in a room, based on measurements with microphone arrays and distributed sensor networks. A central element of the project is to develop signal reconstruction methods that exploit the physical structure of the sound field, to achieve a faithful representation. The ultimate goal is to characterize, capture and reproduce the sound field of complex rooms such as auditoria, theaters or concert-halls. This work has applications on communications, architecture, virtual reality, heritage preservation and the arts.

Responsibilities and tasks
Your responsibility in the project comprises the following tasks (among others):
  • Develop a wave model of the sound field in a room, based on spatio-temporal (or spatio-spectral) data acquired with a network of sensors distributed throughout the room.  
  • Investigate the use of arrays of acoustic transducers to capture and analyse the spatial properties of the sound fields in a room or enclosure. Examine the use of wave expansions to model the measured acoustic data, and assess their accuracy, validity and robustness to perturbations. 
  • Examine the use of signal reconstruction methods that exploit the physical structure of the sound field in a room, and which can potentially lead to accurate representations of the acoustic field over large regions of space. 
  • Participate in international scientific conferences, and visit other leading research groups abroad.
  • Participate in regular meetings with the other team members, discuss and engage in the work conducted by the team. 
Furthermore, as a PhD you will :
  • Be a part of a creative and stimulating scientific environment
  • Develop your theoretical and experimental skills
  • Interact with experts in topics related to your project
  • Participate in teaching and supervision of students
  • Engage in public dissemination and outreach activities
  • Travel and visit other internationally leading research centres in acoustics
We are looking for a highly motivated candidate, with a relevant MSc-degree and experience in acoustics, who is dedicated and passionate about research, science and technology, and who enjoys the process of scientific discovery. A strong background in acoustics is essential, as well as skills in one, or preferably more of the following areas
  • Acoustics and sound field analysis (strictly necessary)
  • Signal processing
  • Physics and wave propagation
  • Measurement methods
  • Numerical modelling and programming
  • Numerical optimization and inverse problems
  • Audio engineering
  • Having good communication skills is a valuable asset for the position.

Approval and Enrolment
The scholarship for the PhD degree is subject to academic approval, and the candidate will be enrolled in one of the general degree programmes at DTU. For information about our enrolment requirements and the general planning of the PhD study programme, please see the DTU PhD Guide.
The assessment of the applicants will be made by Associate Professor Efren Fernandez Grande and Associate Professor Finn Agerkvist.
We offer
DTU is a leading technical university globally recognized for the excellence of its research, education, innovation and scientific advice. We offer a rewarding and challenging job in an international environment. We strive for academic excellence in an environment characterized by collegial respect and academic freedom tempered by responsibility.

Salary and appointment terms
The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed upon with the relevant union. The period of employment is 3 years.
You can read more about career paths at DTU here
Further information
Further information may be obtained from Efren Fernandez Grande, +45 4525 3940.
You can read more about the department and the research group and
Please submit your online application no later than 30 September 2018 (local time).
Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link "Apply online", fill in the online application form, and attach all your materials in English in one PDF file. The file must include:
  • A letter motivating the application (cover letter)
  • Curriculum vitae
  • Grade transcripts and BSc/MSc diploma
  • Excel sheet with translation of grades to the Danish grading system (see guidelines and Excel spreadsheet here)

Candidates may apply prior to obtaining their MSc, but cannot begin before having received it.

All qualified candidates irrespective of age, gender, race, disability, religion or ethnic background are encouraged to apply.
The Department of Electrical Engineering is the central department within electrical and biomedical engineering. It is our goal to ensure research and engineering training at the highest international level. The department is organized into 8 groups each covering important areas of electrical and biomedical engineering. Including PhD students we have more than 275 staff members. You can read more about us on
DTU is a technical university providing internationally leading research, education, innovation and scientific advice. Our staff of 6,000 advance science and technology to create innovative solutions that meet the demands of society, and our 11,200 students are being educated to address the technological challenges of the future. DTU is an independent academic university collaborating globally with business, industry, government and public agencies.