Audio System Simulating Acoustic Output via Crosstalk Cancellation
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Solution Overview
Problem
Current audio systems fail to effectively simulate acoustic output at specific locations in multiple discrete acoustic areas, particularly in vehicles, leading to issues with crosstalk and inconsistent listening experiences across different seating positions.
Innovation Solution
An audio system comprising a processor and speakers that receive audio signals and source position data, applying speaker driver signals to generate acoustic output that simulates the audio source at precise locations in multiple acoustic areas, using a combination of near-field and fixed speakers, and incorporating cross-talk cancellation filters to minimize interference between areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If audio systems use multiple speakers to simulate acoustic output at specific locations in multiple discrete acoustic areas, then the listening experience and audio simulation precision are improved, but crosstalk between areas increases
Solution Approach 1:
The audio system divides the acoustic space into multiple discrete acoustic areas, with each area having dedicated speakers and independent audio processing. This segmentation allows precise audio simulation in each area while reducing interference between areas through spatial separation and targeted signal routing.
Solution Approach 2:
The system applies local quality by providing customized audio processing and speaker configuration for each discrete acoustic area. Each area receives tailored signal processing optimized for its specific spatial characteristics, enabling precise audio simulation at desired locations without compromising other areas.
2Adaptability or versatility
If audio systems simulate acoustic output at specific locations in multiple discrete acoustic areas, then the listening experience is improved, but system complexity increases
Solution Approach 1:
The audio system employs universal signal processing algorithms and speaker control mechanisms that can operate across multiple discrete acoustic areas simultaneously. The same core technology platform handles different audio simulation scenarios, reducing overall system complexity despite the multi-area capability.
Solution Approach 2:
The system dynamically adjusts speaker output and signal processing based on the desired acoustic area and target location. This dynamic control allows the system to optimize performance for different scenarios without requiring completely separate hardware configurations for each acoustic area.
3Measurement precision
If audio systems use near-field speakers and fixed speakers to simulate acoustic output, then audio simulation precision is improved, but crosstalk cancellation requirements increase
Solution Approach 1:
The system merges the functionality of near-field speakers and fixed speakers into a unified audio output system. By combining these speaker types and coordinating their output through integrated signal processing, the system achieves precise audio simulation while managing crosstalk cancellation through coordinated operation rather than separate processing chains.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides dynamic and precise audio simulation in multiple discrete areas, reducing crosstalk and enhancing the listening experience by accurately projecting audio sources to specific locations, while also enabling a privacy mode to minimize acoustic energy transmission to non-intended listeners.
Implementation Method 1
The set of speaker driver signals causes the plurality of speakers to generate acoustic output
Implementation Method 2
acoustic energy from the first plurality of near-field speakers combines with acoustic energy from the other fixed speakers to simulate output of the audio signal by an audio source at a location
Implementation Method 3
incorporating cross-talk cancellation filters to minimize interference between areas
Data Source
AI summary
An audio system includes a plurality of speakers and an audio signal processor. The audio signal processor receives an audio signal and source position data associated with the audio signal; and applies a set of speaker driver signals to the plurality of speakers. The set of speaker driver signals causes the plurality of speakers to generate acoustic output that simulates output of the audio signal by an audio source at a location corresponding to the source position data in each of a plurality of discrete acoustic areas.