Virtual-Speaker VBAP Gain Control for Stable Sound Image Localization

The patent combines the output of multiple speakers (four or more) to produce the sound image, rather than relying on only two or three speakers. By merging the sound outputs from all surrounding speakers with non-zero gains, the system achieves both accurate localization and stable performance when users move, as the combined sound fields from multiple sources provide more robust spatial positioning.

The system dynamically adjusts the gain values for each speaker based on the target localization position and continuously updates the sound output. By calculating and adjusting gains in real-time for all speakers in the combination, the system adapts to user movement and maintains stable localization, transforming the static VBAP approach into a dynamic system that responds to changing conditions.

The patent segments the sound output task across four or more speakers instead of concentrating it in only two speakers. By dividing the sound production function among multiple speakers and assigning appropriate gain values to each, the system expands the sweet spot range and improves localization stability while maintaining operational simplicity through automated gain calculation.

The system makes all four or more speakers potentially active and functional in the sound production process, rather than limiting functionality to only two speakers. Each speaker can contribute to the sound image localization depending on its positional relationship with the target position, making the system more versatile and robust while simplifying operation through unified gain management.