Parametric audio system

Details Parametric audio system Parametric audio system

2008-06-24

2008-06-24

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Circuitry combined with specific type microphone or loudspeaker

C381S077000, C367S119000

Reexamination Certificate

active

07391872

ABSTRACT:
A parametric audio system having increased bandwidth for generating airborne audio signals with reduced distortion. The parametric audio system includes a modulator for modulating an ultrasonic carrier signal with a processed audio signal, a driver amplifier for amplifying the modulated carrier signal, and an array of acoustic transducers for projecting the modulated and amplified carrier signal through the air along a selected projection path to regenerate the audio signal. Each of the acoustic transducers in the array is a membrane-type transducer. Further, the acoustic transducer array is a phased array capable of electronically steering, focusing, or shaping one or more audio beams.

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