How does the NEOOS® transmit sound through the skin?

The technology behind It:
The NEOOS® uses a digital PWM (Pulse Width Modulation) signal in the ultrasonic frequency range. An analog audio signal is modulated onto this ultrasonic carrier.

How modulation works – A simple comparison:
Think of how a radio works:
A radio presenter speaks into a microphone, creating sound waves in the air. These waves are then transmitted using a carrier frequency — for example, 103.4 MHz on Antenne Bayern. The speech (audio signal) is added to the carrier wave using modulation. Your radio receives the signal and separates the audio from the carrier through a process called demodulation.

How the NEOOS® applies this principle:
Similarly, the NEOOS® uses an ultrasonic carrier frequency between 30,000 and 144,000 Hertz. The audio signal is modulated onto this ultrasonic wave. When applied to the skin, the sound is transmitted through it and later “decoded” by the body.

This method allows sound to be delivered directly through the skin — bypassing the ears entirely.