Patent ID: 7272073
Filing Date: 2007-09-18
Classification: H04S

Abstract:
1. A method for generating information relating to the relative position of a set of at least three transducers designed for treating acoustic signals, comprising the following steps: providing a first electric audio signal to a first transducer for transducing the first electric audio signal to a first acoustic signal, providing a second electric audio signal to a second transducer for transducing the second electric audio signal to a second acoustic signal, adding a first ultrasonic signal to said first electric audio signal and a second ultrasonic signal to said second electric audio signal before such signals enter said respective first and second transducers, producing first and second combined acoustical and ultrasonic signals to be emitted from said first and second transducers, sensing said first and second combined acoustical and ultrasonic signals in a third transducer and converting them into an electrical signal, filtering out and separating the ultrasonic signals, producing a first and a second delay signal from said sensed and filtered first and second ultrasonic signals, and computing from said first and second delay signals a signal representing the relative position of at least one transducer with respect to the at least two other transducers of said set of three transducers.