Sound Collecting Device Time Synchronization Audio Synthesis
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Solution Overview
Problem
Existing sound collecting devices struggle to accurately reproduce audio from a specified location using multiple sound collecting units due to synchronization and latency issues in audio data collection.
Innovation Solution
A sound collecting device and system that synchronizes time data across multiple sound collecting units and synthesizes audio data based on time and location information, correcting for latency and network congestion to accurately output audio from a specified position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If audio data is collected from multiple sound collecting units simultaneously, then the coverage and completeness of sound collection is improved, but synchronization accuracy and audio reproduction precision deteriorate due to latency and network congestion
Solution Approach 1:
The system performs preliminary time synchronization by having each sound collecting unit acquire the management device's time data through periodic requests before audio collection begins. This preliminary action ensures all units operate on a unified time baseline, preventing synchronization drift during actual audio collection and resolving the contradiction between multi-unit coverage and synchronization accuracy.
Solution Approach 2:
The management device continuously monitors time data from all sound collecting units and provides feedback by sending corrected time data back to units that deviate from the standard time. This feedback mechanism maintains synchronization accuracy across all units despite network latency variations, enabling accurate audio reproduction from multiple sources simultaneously.
2Measurement precision
If time synchronization is implemented across multiple sound collecting units, then audio synthesis accuracy at specified locations is improved, but system complexity and communication overhead increase
Solution Approach 1:
The system merges the time management function into a single centralized management device that all sound collecting units reference. Instead of each unit maintaining independent time synchronization protocols, they all converge on one authoritative time source, simplifying the overall system architecture while maintaining high audio synthesis accuracy through unified time reference.
Solution Approach 2:
The management device acts as an intermediary that mediates time synchronization between the audio playback device and multiple sound collecting units. It receives time data from the playback device, distributes it to all units, and handles any corrections needed, thereby reducing direct communication complexity between units while ensuring synchronization accuracy.
3Reliability
If periodic time requests are sent from sound collecting units to the management device, then time synchronization is maintained, but network congestion and communication overhead increase
Solution Approach 1:
The system dynamically changes the request interval parameter based on operational conditions. During normal operation, units send requests at standard intervals to maintain synchronization reliability. When network congestion is detected or during stable periods, the interval is adjusted to reduce bandwidth consumption, thereby balancing reliability with energy efficiency in network communication.
Data Source
AI summary
A sound collecting system includes a plurality of sound collecting units that collect sound and a sound collecting device. The plurality of sound collecting units send sound collection data including audio data and time data to the sound collecting device. The sound collecting device includes a processor that manages time for the plurality of sound collecting units and receives an instruction specifying a sound collecting location, and an output unit. The processor of the sound collecting device synthesizes the audio data of the plurality of sound collecting units on the basis of the time data of the plurality of sound collecting units, and outputs, from the output unit, the audio data of the sound collecting location.