Directional Speaker Sound Targeting Mobile Devices

The patent applies local quality by directing sound energy specifically toward the user's location rather than distributing it uniformly in all directions. The directional speaker focuses acoustic energy into a targeted beam, creating high sound intensity in the user's direction while minimizing sound propagation to surrounding areas, thus eliminating disturbance to others while maintaining adequate sound coverage for the intended recipient.

The system implements local quality by adjusting sound volume based on spatial location. High volume is applied locally in the direction of the user, while surrounding areas experience minimal or no sound output. This is achieved through directional acoustic beamforming that concentrates acoustic energy into a focused sector, allowing high sound pressure levels at the target location without creating disturbance in other directions.

The patent replaces complex mechanical directional control systems with electronic signal processing and acoustic beamforming techniques. Instead of using movable speakers or mechanical steering mechanisms, the system uses multiple fixed acoustic elements controlled by electronic phase and amplitude modulation to achieve directional sound output. This substitution of mechanical systems with electronic control reduces moving parts and simplifies the overall device structure while maintaining directional functionality.