Power amplification for parametric loudspeakers

Details Power amplification for parametric loudspeakers Power amplification for parametric loudspeakers

2008-01-15

2008-01-15

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

One-way audio signal program distribution

C330S010000, C330S20700P, C330S251000, C381S082000, C381S079000

Reexamination Certificate

active

10332659

ABSTRACT:
A power amplifier for a parametric loudspeaker system which utilizes switch-mode power conversion to increase efficiency. The power amplifier is configured to coordinate the switching frequency of the amplifier with the carrier frequency of the parametric loudspeaker system, so a lower switching frequency may be used even though the power amplifier must amplify ultrasonic signals. The amplifier can be further optimized to counteract the reactance of the transducer load at the carrier frequency.

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