ADAPTIVE EQUALIZATION FOR AN ULTRASONIC AUDIO SYSTEM

摘要

An ultrasonic audio system includes adaptive equalization techniques configured to adjust the overall output of the ultrasonic audio system. This can be done by adjusting the equalization of the electronic audio signal representing the audio content being reproduced by the ultrasonic audio system. For example, in various embodiments, systems and methods can be implemented to increase the gain of higher frequency portions of the electronic audio signal while making a corresponding decrease in the amount of gain at the lower frequency portions of the same signal.

主权项

1. A method for adapting equalization in an ultrasonic audio system, comprising:
an equalization module receiving an electronic audio signal representing audio content, and applying determined amounts of gain or attenuation to specific frequency bands of the electronic audio signal; an equalization control module receiving an input signal representing an attenuation setting for the ultrasonic audio system; the equalization control module determining an inflection point for an equalizer of the audio processing system based on the attenuation setting; and the equalization control module controlling the amount of gain applied by the equalization module above the inflection point to achieve a flat output for frequencies above the inflection point, and controlling the amount of gain applied by the equalization module to the audio signal below the inflection point to provide constant power for the frequencies below the inflection point.