Abstract: A three-dimensional (3D) sound gaming application can include an ultrasonic sound system, one or more gamers, a gaming console and a throat microphone set. The ultrasonic sound system can include a digital signal processing (DSP) that can adjust the phase, delay, reverb, echo, gain, magnitude or other audio signal component of an audio signal or audio signal components received from the gaming console; an amplifier which can amplify the processed audio signal; and a pair of emitters which can emit ultrasonic signals to each of the gamer's ears to produce a 3D sound effect. The throat microphone set can include a throat microphone which can integrate a low pass filter to attenuate any picked up, ultrasonic carrier frequency signals from the emitted ultrasonic waves. In addition, the throat microphone set can also include an ear speaker piece with one or more apertures for allowing sound produced by ultrasonic waves to enter the gamer's ear canal.

Abstract: A parametric speaker comprises a generally planate radiating element, suitable for radiating ultrasonic vibrations into a fluid medium, and an emitter, having an ultrasonic output and/or resonant frequency, the emitter being intimately coupled to the radiating element. The radiating element is physically configured to have a mechanical resonance that substantially matches the output and/or resonant frequency of the emitter.

Abstract: An ultrasonic emitter comprises a support member operable to support an ultrasonic emittive material. The support member includes a plurality of support ribs. The ultrasonic emittive material is coupled to upper portions of the support ribs so as to be carried by the support member. A protective screen has a plurality of apertures formed therein, the protective screen being in contact with the ultrasonic emittive material atop the support ribs such that the spacing between the ultrasonic emittive material and the protective screen is substantially zero atop the support ribs.

Abstract: A signal processing system for generating an ultrasonic signal from an audio signal comprises a compressor, operable to compress the audio signal, and an equalization circuit, operable to equalize the audio signal. A modulation circuit is operable to combine the audio signal with a carrier signal to produce at least one modulated carrier signal. A voltage detection and control circuit is operable to: detect a voltage of the modulated carrier signal; compare the detected voltage of the modulated carrier signal to a desired voltage; and cause the voltage of the modulated carrier signal to be adjusted if the compared voltage differs by a predetermined amount from the desired voltage.

Abstract: A method of optimizing a parametric emitter system having a pot core transformer coupled between an amplifier and an emitter, the method comprising: selecting a number of turns required in a primary winding of the pot core transformer to achieve an optimal level of load impedance experienced by the amplifier; and selecting a number of turns required in a secondary winding of the pot core transformer to achieve electrical resonance between the secondary winding and the emitter.