Audio & Sound

Sony received 14 patents covering audio accessibility, spatial audio management, wireless speaker systems, and AI-driven soundtrack adaptation. Several applications tackle hearing loss accommodation through adaptive filtering that applies different gain treatments to quiet versus loud sounds in the same frequency range based on a user's audiogram, preserving the dynamic range and artistic intent of curated game audio rather than flattening it with static equalization. The company filed multiple patents around wireless speaker systems that eliminate the need for headsets by mixing audio from multiple simultaneous sources (game consoles, phones, music players) while using beamforming microphones and stereo echo cancellation to isolate voice input from the played audio across both channels. Another cluster of applications addresses spatial audio placement, allowing users to position non-game audio sources like chat channels, music streams, and commentary feeds at distinct 3D locations around them, with some systems using AI to detect silent gaps in primary chat and intelligently insert secondary audio streams both temporally and spatially to avoid conflicts. One patent adapts the stereo sweet spot by tracking player movement through triangulation of microphones in speakers, controllers, and cameras, then adjusting speaker parameters in real time so optimal audio follows the player around the room. Two applications focus on music synchronization, using AI to detect gameplay intensity from in-game events and either matching music tempo to action or dynamically morphing portions of personal playlists to mirror the style of the original game score during specific moments. Another patent uses spread-spectrum audio signals and pseudo-distance calculations to determine device positions without requiring synchronized clocks across transmitters, enabling precise spatial audio for headsets and controllers.

Roblox received 1 patent covering spatialized voice chat in virtual environments. The system transforms flat monaural avatar voice audio into 3D positional sound by applying environment-specific spatial parameter models that account for each avatar's position, velocity, and orientation along with scene geometry like virtual walls, occlusions, and reverberations, creating location-specific acoustic behavior rather than generic spatialization.

Microsoft received 1 patent addressing acoustic modeling for dynamic virtual spaces. The system extends precomputed wave-based sound propagation to handle doors, windows, and other openings that change state at runtime by decoupling portal attenuation from ambient acoustic parameters, storing portal path data that can be applied cheaply when a door opens or closes without requiring full recomputation of the acoustic environment.