- August, 2018: AAlborg University, Denmark, Visiting Professor.
- Mar., 2018: Institute of Information Technology and Electronics, Liberec, the Czech Republic. Funded by Erasmus+.
- Sep.-Oct., 2014 Visiting professor, Signal Processing Research Department, Starkey Hearing Technology.
- Mar.-May, 2014: Visiting professor, International Audio labs, Fraunhofer IIS and Friedrich-Alexander University, Erlangen-Nuremberg, Germany.
- Since 2013 (multiple visits): INRIA Grenoble, Rhône-Alps, France.
- Jul.-Aug., 2013: Tan Chin Tuan visiting professor, Nanyang Technological University, Singapore.
- Apr., 2013: Institute of Information Technology and Electronics, Liberec, the Czech Republic. Funded by Project ESF CZ.1.07/2.2.00/28.0050.
- Jan. 2013: TU Berlin, Germany.
- Sep., 2012: International Audio labs, Fraunhofer IIS and Friedrich-Alexander University, Erlangen-Nuremberg, Germany.
- Sep., 2009 Imperial College, London, UK.