Multi-tuned Speaker System Phase Compensation

The patent divides the audio output function across multiple loudspeakers with distinct frequency tunings. Instead of relying on a single speaker to handle all frequencies, the system segments the frequency ranges, with each speaker optimized for specific bands. This allows the first speaker to operate excursion-limited at lower frequencies while the second speaker handles higher frequencies, achieving low-profile design without sacrificing maximum output capability.

The patent changes the operating parameters by tuning different loudspeakers to distinct frequencies. The first loudspeaker is tuned to a lower frequency where it operates in an excursion-limited regime, while the second loudspeaker is tuned to a higher frequency where it can provide additional output. This parameter differentiation resolves the contradiction by allowing each speaker to operate in its optimal range within the constrained profile.

The patent segments the acoustic output function by using multiple loudspeakers, each driving the port at distinct frequencies. The first loudspeaker handles lower frequencies where excursion limitations would otherwise restrict output, while the second loudspeaker handles higher frequencies. This segmentation allows the system to maintain simplicity in terms of port configuration while overcoming the output limitations through frequency-based division of labor.

The patent makes the port serve multiple functions by having it driven by multiple loudspeakers at different frequencies. Instead of a single loudspeaker attempting to cover all frequency ranges, the port becomes a universal output mechanism that can be driven effectively across a broader frequency spectrum by multiple specialized sources, thereby increasing overall acoustic output without proportionally increasing complexity.