Bonded Playback Group Volume Control for Synchronized Audio
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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 limitations.
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
1Ease of operation
If volume control is implemented at each playback device independently, then each device can be controlled individually, but volume inconsistency and lack of synchronization occurs across the bonded zone
Solution Approach 1:
The patent merges the volume control functionality across multiple playback devices by implementing a shared volume control mechanism. When a user adjusts volume at any device in the bonded zone, the control command is propagated to all devices, ensuring synchronized volume changes while maintaining individual accessibility. This resolves the contradiction by combining individual control capability with group synchronization.
Solution Approach 2:
The system implements feedback mechanisms where volume control commands are transmitted across the bonded zone network. When one device receives a volume adjustment command, it communicates this change to other devices in the zone, which then adjust their volume accordingly. This feedback loop ensures all devices maintain consistent volume levels while allowing individual interaction points.
2Reliability
If volume control commands are propagated across the bonded zone, then synchronized volume adjustment is achieved, but network communication overhead and potential delays increase
Solution Approach 1:
The system performs preliminary actions by pre-establishing the bonded zone network connections and volume synchronization protocols before actual volume adjustments are needed. Devices are pre-configured to recognize and respond to volume commands from any zone member, so when a volume change is requested, the communication path is already established and ready, minimizing actual adjustment delay.
Solution Approach 2:
The patent replaces traditional mechanical or sequential volume control mechanisms with a network-based digital communication system. Instead of physical connections or step-by-step device-by-device control, the system uses digital messages transmitted over the network to instantly propagate volume commands across all devices, significantly reducing the time required for synchronized volume adjustment.
3Reliability
If a primary playback device processes and distributes audio signals to secondary devices, then synchronized playback is maintained, but system complexity and processing requirements increase
Solution Approach 1:
The patent segments the playback system into a primary playback device and secondary playback devices within the bonded zone. The primary device handles the main audio processing and signal distribution functions, while secondary devices focus on receiving and playing back the distributed signals. This segmentation maintains synchronized playback by centralizing control while simplifying individual device complexity.
Solution Approach 2:
The primary playback device acts as an intermediary between the audio source and secondary playback devices. It receives the audio signal, processes it, and distributes it to all secondary devices in the bonded zone. This intermediary role ensures synchronized playback across all devices while consolidating the processing complexity in a single device rather than requiring complex processing at each device.
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.