Audio System Dynamic Channel Routing for Flexible Speaker Placement

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Solution Overview

Problem

Existing audio systems struggle to provide an optimal listening experience when speaker positions deviate from standard arrangements, as they are limited in compensating for changes in speaker setup and listening position, leading to a degraded surround sound experience.

Innovation Solution

An audio system with a processor that receives multi-channel audio data and adjusts routing based on preset and virtual speaker positions, allowing flexible modification of audio data routing to accommodate changes in listening position and orientation, using control instructions to route channels to output channels with techniques like phase shifts and delays.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If speakers are positioned according to standard arrangement, then good listening experience is achieved, but flexibility in speaker setup and listening position changes is limited

Engineering Contradiction:
Improvelistening experience qualityVSAvoidspeaker setup flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic routing that automatically adapts audio channel assignments based on detected speaker positions and listening location. The system transitions from static standard arrangement to dynamic reconfiguration, allowing speakers to be placed flexibly while maintaining optimal audio experience through real-time routing adjustments.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes routing parameters and channel assignments based on measured speaker positions and listening position. By adjusting these parameters dynamically, the system maintains audio quality regardless of physical speaker placement deviations from standard arrangements.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If speakers are positioned away from audio sweet spot, then setup flexibility is improved, but compensation for position deviations becomes insufficient

Engineering Contradiction:
Improvespeaker positioning freedomVSAvoidsurround sound experience
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent replaces physical speaker repositioning requirements with digital signal processing and routing adjustments. Instead of mechanically arranging speakers in precise positions, the system uses virtual positioning through software-based channel routing to achieve optimal surround sound experience from any physical configuration.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system creates virtual speaker positions that replicate the acoustic effect of standard arrangements. By routing audio channels to create virtual images of speakers at desired positions, the system compensates for physical speaker placement deviations and maintains surround sound quality.

Inventive Principle:
Principle #26Copying

3Ease of operation

If listening position changes, then user comfort is improved, but audio synchronization and surround sound effect deteriorate

Engineering Contradiction:
Improvelistening position flexibilityVSAvoidaudio synchronization
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system incorporates feedback from position detection to automatically adjust routing and synchronization parameters. By continuously monitoring listening position and speaker configuration, the system adapts audio delivery to maintain synchronization and surround sound effects regardless of user position changes.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS9686626B2Audio system and method
Publication Date: 2017.06.20 HARMAN BECKER AUTOMOTIVE SYST GMBH
  • US9686626B2 patent drawing
  • US9686626B2 patent drawing
  • US9686626B2 patent drawing

AI summary

An audio system comprises at least one processor configured to receive multi-channel audio data and comprising a plurality of output channels. Control instructions are established based on preset positions of a plurality of speakers connectable to the output channels and further based on virtual positions of the channels of the multi-channel audio data. The channels of the multi-channel audio data are routed to the output channels based on the control instructions.