Bonded Playback Zone Volume Propagation for Synchronized Audio
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing digital audio systems lack seamless satellite volume control across multiple playback devices in a bonded zone, leading to inconsistent audio experiences and user input inefficiencies.
Innovation Solution
Implementing a system where user input for volume changes at a secondary playback device is propagated throughout the bonded zone, allowing all devices to adjust their volume synchronously, with a primary playback device processing and distributing the adjusted audio signals to maintain synchronized playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If volume control is implemented independently at each playback device, then device autonomy is maintained, but volume consistency across the bonded zone deteriorates
Solution Approach 1:
The patent introduces a primary playback device as an intermediary that receives volume control inputs from any device in the bonded zone and redistributes the control signal to all other devices. This mediator approach maintains device autonomy while ensuring volume consistency, as each device can still receive and process control signals independently through the primary device coordination mechanism.
Solution Approach 2:
The patent merges volume control functionality across multiple playback devices by implementing a bonded zone where all devices share a common volume control state. The volume parameter is combined into a single zone-level setting that applies uniformly to all devices, resolving the contradiction between individual device autonomy and collective volume consistency.
2Manufacturing precision
If volume changes are propagated to all devices in the bonded zone, then volume consistency is improved, but system complexity increases
Solution Approach 1:
The patent segments the volume control system into a primary playback device that handles signal distribution and secondary devices that execute local volume adjustments. This segmentation reduces system complexity by dividing the propagation task, with the primary device managing the coordination logic and other devices simply applying received control signals to their local audio output.
Solution Approach 2:
The primary playback device serves multiple functions: it acts as a control signal router, maintains the bonded zone state, and coordinates volume propagation to all devices. This multi-functionality approach reduces overall system complexity by consolidating control logic in a single device rather than requiring complex peer-to-peer coordination among all devices.
3Ease of operation
If satellite devices can control volume locally, then ease of operation is improved, but audio synchronization deteriorates due to propagation delays
Solution Approach 1:
The primary playback device serves as an intermediary that receives local control inputs from satellite devices and immediately redistributes the volume adjustment command to all devices in the bonded zone. This mediator approach maintains audio synchronization because the control signal propagation through the network is faster and more reliable than satellite devices independently adjusting their own volume, which could create timing mismatches.
Solution Approach 2:
The system implements feedback mechanisms where the primary device monitors volume control inputs from satellite devices and automatically coordinates the propagation of adjustment commands to maintain synchronization. This feedback loop ensures that local ease of operation does not compromise audio synchronization, as any volume change initiated at a satellite device is quickly communicated back through the primary device to all other devices.
Data Source
AI summary
Embodiments are provided for satellite volume control. An example method includes receiving an input at a playback device to adjust a volume for a plurality of playback devices that are grouped for synchronous playback of audio content, wherein the plurality of playback devices includes the playback device. The method also includes sending a first message over a network from the playback device to a device associated with the plurality of playback devices, the first message including information based on the input, wherein the information is used to adjust the volume of the plurality of playback devices. The method also includes receiving a second message at the playback device over the network, the second message including information for the volume of the playback device, wherein the volume is based on the adjusted volume of the plurality of playback devices.