Multi-Room Audio Ad-Hoc Networking for Synchronized Playback
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Solution Overview
Problem
Conventional multi-room audio systems face challenges in ensuring connection stability and transmission rate due to network interference, which limits the ability to support real-time transmission of high-resolution audio, leading to playback delays and sound quality loss.
Innovation Solution
A multi-room audio synchronous playback system utilizing an ad-hoc network formed by audio devices supporting a 5 GHz to 7 GHz wireless communication protocol, dynamically optimizing network topology via multi-hop relay and real-time interaction with synchronization signals to ensure synchronized playback across multiple rooms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional WiFi router is used as a data center with DLNA or Airplay protocols, then audio streams can be transmitted between devices, but connection stability and transmission rate deteriorate due to network interference
Solution Approach 1:
The patent introduces a dedicated audio transmission channel as an intermediary between audio devices and the WiFi router. This separate channel handles audio data transmission independently from other network traffic, preventing network interference from affecting audio stream stability while maintaining connection through the existing WiFi infrastructure.
Solution Approach 2:
The patent segments the network transmission by separating audio data transmission from general network traffic. By creating a dedicated audio channel and using specific protocols (AirPlay, DLNA) for audio streams, the system isolates audio transmission from other data flows, thereby improving connection stability and reducing the impact of network interference.
2Productivity
If a conventional router is used for multi-room audio transmission, then devices can be connected to the network, but real-time transmission of high-resolution audio deteriorates due to limited router performance
Solution Approach 1:
The patent implements preliminary buffering and pre-synchronization of audio data before transmission. Audio streams are buffered in advance and synchronized timestamps are assigned beforehand, allowing the system to compensate for transmission delays and maintain real-time playback even when router performance is limited.
Solution Approach 2:
The system dynamically adjusts transmission parameters based on real-time network conditions. By monitoring buffer levels, transmission quality, and device synchronization status, the system dynamically modifies audio stream characteristics and routing to optimize transmission rate and minimize playback delay.
3Manufacturing precision
If audio devices are connected through a central router, then network coverage is achieved, but synchronous playback deteriorates due to playback delay and sound quality loss
Solution Approach 1:
The patent implements a feedback mechanism where each audio device reports its playback status, synchronization timing, and audio quality metrics to a central coordinator. The system uses this feedback to calculate and distribute compensation delays, adjusting each device's playback timing to achieve precise synchronization across multiple rooms while maintaining high audio quality.
Solution Approach 2:
The system dynamically changes transmission and playback parameters based on measured performance. By adjusting audio sample rates, buffer sizes, transmission codecs, and playback timing offsets, the system optimizes both synchronization accuracy and sound quality to prevent information loss during multi-room transmission.
Data Source
AI summary
A multi-room audio synchronous playback method, a system, a device and a storage medium are provided. The multi-room audio synchronous playback method includes: creating an ad-hoc network using a plurality of audio devices supporting a target wireless communication protocol via point-to-point connection, the ad-hoc network covering a plurality of rooms, the target wireless communication protocol operating at a frequency band of 5 GHz to 7 GHz; dynamically analyzing link quality to select an optimum transmission path, and dynamically optimizing a network topology of the ad-hoc network via multi-hop relay; transmitting target audio data between the audio devices of the ad-hoc network based on the optimum transmission path, and performing real-time interaction and dynamic compensation based on a synchronization signal to obtain a synchronization parameter; and controlling each audio device of the ad-hoc network based on the synchronization parameter to synchronously play the target audio data.