Steerable highly directional audio beam loudspeaker. - Dirk Olszewski; Fransiskus Prasetyo; Klaus Linhard (INTERSPEECH, 2005)

Perception experiment combining a parametric loudspeaker and a synthetic talking head. - Gunilla Svanfeldt; Dirk Olszewski (INTERSPEECH, 2005)

Highly directional multi-beam audio loudspeaker. - Dirk Olszewski; Klaus Linhard (INTERSPEECH, 2006)

Targeted Audio. - Dirk Olszewski (Computers in the Human Interaction Loop, 2009)