Live Event Audio-Video Synchronization for High-Fidelity Mobile Recording
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Solution Overview
Problem
Handheld audio-visual recording devices often produce low fidelity audio signals that fail to capture the sound quality of live events effectively due to limitations in integrated microphones and ambient noise, which detracts from the appreciation of artistic or oratory performances.
Innovation Solution
A system for real-time wireless synchronization of high quality audio segments with video recordings using sound board equipment and broadcasting devices, allowing high fidelity audio to be transmitted to reception devices, which can then synchronize with video segments recorded by audience members, using A-V Synchronization Application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If integrated microphones in handheld AV recording devices are used, then the device can record both video and audio simultaneously, but the audio fidelity is low and cannot capture high quality sound of live events
Solution Approach 1:
The recording system is divided into separate components: a handheld AV recording device for video capture and a separate sound board system for high-fidelity audio capture. This segmentation allows each component to specialize in its function, with the sound board equipped with multiple microphones and processing capabilities dedicated to audio quality, while the handheld device focuses on video recording and basic audio synchronization.
Solution Approach 2:
A synchronization system acts as an intermediary between the video recording device and the sound board. This intermediary receives timing information from both devices, processes the data to align audio and video streams, and ensures they are properly synchronized in the final recording, resolving the complexity of coordinating multiple independent recording systems.
2Measurement precision
If multiple microphones and sound board equipment are used to capture high fidelity audio, then audio quality improves, but the system complexity and setup requirements increase
Solution Approach 1:
The sound board system is designed to serve multiple functions: capturing audio from multiple microphones, processing and mixing the audio signals, generating synchronization timing information, and communicating with various handheld recording devices. This multi-functionality consolidates what would otherwise require multiple separate devices into a single integrated system, simplifying setup and operation.
Solution Approach 2:
The system automatically performs audio synchronization and timing alignment without requiring manual intervention. The sound board and synchronization system autonomously handle the complex tasks of coordinating multiple microphones, aligning audio with video timestamps, and managing data flow between devices, eliminating the need for operators to manually configure and synchronize each component.
3Area of stationary object
If handheld recording devices are positioned far from the performance to capture video, then video coverage improves, but audio quality deteriorates due to distance and ambient noise
Solution Approach 1:
The recording function is segmented between two separate systems: the handheld AV device positioned at a distance to capture wide video coverage, and the sound board with microphones positioned close to the performance to capture high-fidelity audio. This segmentation allows each system to operate in its optimal position without compromising the other's quality.
Solution Approach 2:
The video recording from the handheld device and the high-fidelity audio recording from the sound board are merged into a single synchronized output. The synchronization system combines these separate streams by aligning their timing information, creating an integrated audio-visual recording that benefits from both the distant video coverage and close-proximity audio capture.
Data Source
AI summary
Systems and methods are presented herein that facilitate temporally synchronizing, in real time, a separately sourced high quality audio segment of a live event with a video segment that is generated by a recording device associated with a member of the audience. An A-V Synchronization Application may synchronize a video segment of a live event that is generated from a personal electronic device of an audience member with a high quality audio segment that is separately sourced and generated by professional sound recording equipment at the live event. The result of the temporal synchronization is a high fidelity digital audio visual recording of the live event. In various, the audience member may stream, in real-time, the high fidelity digital audio visual recording to an additional electronic device at a different geo-location. In some examples, narrative audio segments may be also included as part of the high fidelity digital audio visual recording.