Offer 330 out of 519 from 02/05/23, 07:28


Tech­ni­sche Uni­ver­sität Ber­lin - Faculty IV - Qua­lity and Usa­bi­lity Lab

Research assistant - salary grade E 13 TV-L Berliner Hochschulen

under the reserve that funds are granted; part-time employment may be possible

The Quality and Usability Lab is part of TU Berlin's Faculty IV and deals with the design and evaluation of human-machine interaction, in which aspects of human perception, technical systems and the design of interaction are the subject of our research. We focus on self-determined work in an interdisciplinary and international team; for this we offer open and flexible working conditions that promote scientific and personal exchange and are a prerequisite for excellent results.

The focus of the scientific work in this project is on speech signal analysis and the determination of speech quality in various (mobile and fixed) network scenarios. For this purpose, conversational situations are simulated via disrupted networks in order to gain information about the change in the interaction and thus about the perceived quality. Based on this simulation, signal-based or parametric models for predicting conversational quality are developed and extended. One focus of the current work is on expanding the simulation to include the effects of talker echo. The simulation environment is extended and validated using subjective conversation tests. Furthermore, models for predicting the conversation quality are extended by the prediction of perceptual perception dimensions of the speaking, listening and interaction phases of the conversation, so that conclusions can be drawn about the underlying degradations.

Working field:

Central is the creation and empirical research of the use of speech technology to simulate conversations over disturbed networks. Specific tasks in the "Multidimensional Analysis of Simulated Conversations" project are aimed, for example, at researching and simulating human behavior in the case of talker echo, as well as modeling conversational quality and the associated perceptual dimensions. Acoustic and linguistic parameters are often modeled in the simulation, and the results have to be evaluated using conversation tests in the laboratory. If desired and suitable, a doctorate in the subject area can be aimed for. Project and research results should be published and presented in scientific journals, at conferences and workshops. In addition, a collaboration within international standardization bodies (ITU-T) is targeted.

The specific tasks include:
  • Conception, construction and evaluation of simulations of human behavior in conversational situations
  • Measurement and modeling of conversational quality and the perceptual dimensions of the listening, speaking, and interacting phases of a conversation
  • Planning and execution of subjective conversation tests in the lab and via crowdsourcing
  • Project communication and reporting
  • Publication and presentation of project and research results in scientific journals, at conferences, and in workshops as well as standardization meetings of ITU-T

Professionally experienced employees from our team support you with self-motivated familiarization within the areas of responsibility.

The possibility of a doctorate is given.


  • Successfully completed university degree (master, diplom or equivalent) in electrical engineering, computer engineering/science, informatics, media informatics, media technology, information systems (or an equivalent technical background)
  • Ability to work independently in a team and good self-organization
  • Very good programming knowledge in Python, Matlab or similar
  • Good knowledge of speech technology (especially in the area of spoken dialog systems)
  • Good knowledge of digital signal processing, statistics, empirical data analysis
  • Interest in carrying out experiments with human participants to determine quality and user experience
  • Language skills: English fluent in writing and speaking, German communication secure
  • Interest in the work in an agile and lively international and interdisciplinary environment

How to apply:

Please send the following documents, bundled in a single PDF file, to Prof. Dr.-Ing. Sebastian Möller Letter of application, curriculum vitae, copies of certificates, job references.

By submitting your application via email you consent to having your data electronically processed and saved. Please note that we do not provide a guaranty for the protection of your personal data when submitted as unprotected file. Please find our data protection notice acc. DSGVO (General Data Protection Regulation) at the TU staff department homepage: or quick access 214041.

To ensure equal opportunities between women and men, applications by women with the required qualifications are explicitly desired. Qualified individuals with disabilities will be favored. The TU Berlin values the diversity of its members and is committed to the goals of equal opportunities.

Technische Universität Berlin - Die Präsidentin - Fakultät IV, Quality and Usability Lab, Prof. Dr.-Ing. Sebastian Möller, Sekr. TEL 18, Ernst-Reuter-Platz 7, 10587 Berlin