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Megaultraphone: megaphones based on parametric array technology

Company / Financial administration: 

Ministerio de Ciencia e Innovación. Programa Ingenio Explora. Ref: TEC2010-11560-E

Partner: 

La Salle R&D

Entities participating: 

La Salle R&D

The Project has led to the development of a new class of megaphones based on parametric array technology. The speaker’s voice is used to modulate an ultrasound carrier wave, which once emitted into air results in highly directivity audible voice thanks to air self-demodulating phenomenon. All results protected by patent.

01/03/2011
01/03/2012
Contact: 
O.Guasch