As part of the Taster Studies for high-school graduates, the Institute has invited to a quizz around the topic of "speech and audio signal processing". How is a speech signal processed digitally in a mobile phone? How does a virtual band sound spatially and how does a human create vowels? These and similar questions were dealt with in a multi-faceted program. Some experiments, exercises and demonstrations put the high-school graduates in the position to answer the questions of the quizz.