Vorrichtung und Verfahren zum parametrischen Erzeugen von Schall sowie Vorrichtung und Verfahren zum Demodulieren von amplitudenmoduliertem Schall

摘要

The invention relates to a device and method for parametrically generating sound. The invention involves the use of a thermoacoustic converter (10) for generating sound waves and modulation means for amplitude-modulating the sound waves. The invention also relates to a device and method for demodulating amplitude-modulated sound. To this end, an acoustically non-linear medium is used that is situated, with a sound entry side, in front of a sound exit opening from which the amplitude-modulated sound exits.