Playback Calibration Interface for Multi-Device Audio Consistency
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Solution Overview
Problem
Existing media playback systems face challenges in maintaining calibration across multiple devices and environments, leading to inconsistent audio quality due to changes in device configuration, physical location, and acoustic conditions.
Innovation Solution
The implementation of a calibration state variable that is stored and shared across devices within a media playback system, allowing for the detection of calibration status and triggering recalibration procedures as needed, ensuring consistent audio performance across different zones and environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration is performed for each device individually, then each device can be optimized for its specific environment, but the system complexity increases and calibration consistency across devices deteriorates
Solution Approach 1:
The system implements feedback mechanisms where calibration state variables are continuously monitored and shared across devices. When a device's calibration status changes or becomes invalid (e.g., device moved, configuration changed), the system detects this through feedback signals and triggers appropriate recalibration actions to maintain consistency across the network.
Solution Approach 2:
A central controller or coordinator device acts as an intermediary to manage calibration state variables across multiple devices. This intermediary collects calibration information from individual devices, processes it centrally, and distributes updated calibration data, thereby reducing individual device complexity while maintaining system-wide calibration consistency.
2Stability of the object's composition
If calibration state variables are shared across all devices, then calibration consistency improves, but network communication overhead and information loss increase
Solution Approach 1:
The calibration state information is segmented into discrete variables that can be independently transmitted and updated. Rather than sharing complete calibration datasets, the system exchanges compact calibration state variables (e.g., calibrated/uncalibrated status flags, device identifiers), reducing communication overhead and information loss while maintaining consistency.
Solution Approach 2:
The system transforms complex calibration information into simplified parameter representations (state variables) that capture essential calibration status without transmitting full calibration profiles. This parameter transformation reduces data transmission requirements and minimizes information loss during network communication.
3Reliability
If recalibration is triggered frequently to maintain accuracy, then audio quality consistency improves, but processing time and energy consumption increase
Solution Approach 1:
The system performs preliminary checks of calibration state variables before triggering full recalibration. By monitoring calibration status indicators in advance and only initiating recalibration when necessary (e.g., when calibration validity is compromised), the system maintains audio quality consistency while minimizing unnecessary processing time and energy consumption.
Solution Approach 2:
Instead of continuous recalibration, the system employs periodic calibration status checks and triggers recalibration at intervals or based on specific events (e.g., device startup, location change detection). This periodic approach maintains reliability while reducing overall processing time compared to continuous calibration.
Data Source
AI summary
Examples disclosed herein relate to playback device calibration. A calibration state variable may represent a calibration state of a playback device. A control device may display an indications of the calibration state. For instance, in a first instance, the control device may display an indication that a first playback device is in an uncalibrated state. Further, in a second instance, the control device may display an indication that the first playback device is in an calibrated state, perhaps after instructing the first playback device to initiate calibration.