Two Ph.D. research positions are available in the KU Leuven Electrical Engineering Department (ESAT), Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics, in the frame of a research project on audio signal processing in ad-hoc wireless transducer array networks. The research activities include: (PhD position 1) The design and evaluation of digital signal processing (DSP) algorithms for acoustic echo and feedback cancellation, active noise control, and sound field control in ad-hoc wireless transducer array networks.