Wearable Audio DAC Path Segmentation for Phase Correction

The patent divides the single DAC output path into multiple independent DAC output paths (first DAC output path connected to first speaker, second DAC output path connected to second speaker). This segmentation allows each speaker to have its own dedicated DAC path, enabling independent optimization of driving conditions, phase correction, and output level control for each speaker, thereby resolving the contradiction between device complexity and audio output performance.

The patent applies local quality by providing different DAC output path configurations for different speakers based on their specific characteristics. Each speaker can have its own dedicated DAC path with customized driving conditions, phase correction, and output level settings tailored to its specific requirements, rather than using a uniform configuration for all speakers. This resolves the contradiction by optimizing audio performance locally for each speaker while maintaining manageable overall system complexity.

The patent implements dynamic activation of DAC output paths based on the frequency components present in the audio signal. The processor dynamically determines which DAC output paths need to be activated by analyzing the frequency spectrum of the input audio signal, and selectively activates only the necessary paths rather than keeping all paths active continuously. This dynamic approach maintains high audio output performance when needed while reducing energy consumption when fewer speakers are required, resolving the contradiction between performance and energy usage.