Coordinated Audiovisual Rendering via Server-Side Pitch Correction
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Solution Overview
Problem
Current mobile devices face limitations in capturing and processing audiovisual performances due to computational resource constraints, which hinder the delivery of advanced digital acoustic techniques, particularly in video aspects, for real-world applications.
Innovation Solution
A method for capturing and coordinating vocal performances with synchronized video on mobile devices, involving the use of a communication network to receive and process audiovisual encodings, generate visual progressions for templated screen layouts, and render coordinated audiovisual works, incorporating pitch correction and harmonization features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mobile devices are used to capture and process audiovisual performances, then ubiquity and mobility are improved, but computational resource constraints worsen processing capability
Solution Approach 1:
The system divides the audiovisual processing workload into separate components: audio processing (pitch correction, harmonization) and video processing (synchronization, layout selection) are handled independently through separate analysis streams. This segmentation allows each component to be optimized separately and reduces the computational burden on mobile devices.
Solution Approach 2:
A server acts as an intermediary between mobile devices and the final rendered output. The server receives audiovisual data from multiple distributed performers, performs complex processing operations including pitch correction, harmonization, and visual progression generation, then returns processed results to individual devices. This mediator approach offloads heavy computational tasks from resource-constrained mobile devices.
2Adaptability or versatility
If multiple geographically distributed performers are coordinated, then collaboration capability is improved, but network transmission latency worsens real-time synchronization
Solution Approach 1:
The system performs preliminary actions by having each performer capture and upload their audiovisual performance data before the coordinated rendering occurs. The server pre-processes this data including pitch correction, harmonization, and visual progression generation. By completing these operations in advance, the system minimizes real-time processing delays during the actual coordinated performance playback.
Solution Approach 2:
The system creates and distributes visual progressions that encode sequences of visual layouts corresponding to different sections of the coordinated performance. These visual progression templates serve as pre-computed copies that guide the rendering process, allowing each device to efficiently assemble the final coordinated output without requiring complex real-time synchronization calculations.
3Manufacturing precision
If advanced digital acoustic techniques are implemented, then audio quality is improved, but processing complexity worsens device performance
Solution Approach 1:
The system extracts and separates advanced audio processing functions (pitch correction, harmonization) from the mobile device environment and relocates them to a server environment with greater computational resources. This extraction allows high-quality audio processing to be performed without burdening the limited processing capabilities of mobile devices.
Solution Approach 2:
The system changes the operational parameters of audio processing by using server-based computation with higher processing power and memory resources. This parameter change enables the implementation of sophisticated algorithms for pitch correction and harmonization that would be infeasible on mobile devices, thereby improving audio quality while bypassing device processing limitations.
4Measurement precision
If video synchronization is implemented across multiple performers, then coordination accuracy is improved, but computational load worsens device capabilities
Solution Approach 1:
The system performs preliminary video processing by pre-synchronizing and pre-rendering visual content on the server before distribution to mobile devices. Visual progressions are generated in advance, encoding the precise timing and layout information needed for synchronized playback. This preliminary action ensures accurate video synchronization without requiring mobile devices to perform complex real-time synchronization calculations.
Data Source
AI summary
Vocal audio of a user together with performance synchronized video is captured and coordinated with audiovisual contributions of other users to form composite duet-style or glee club-style or window-paned music video-style audiovisual performances. In some cases, the vocal performances of individual users are captured (together with performance synchronized video) on mobile devices, television-type display and/or set-top box equipment in the context of karaoke-style presentations of lyrics in correspondence with audible renderings of a backing track. Contributions of multiple vocalists are coordinated and mixed in a manner that selects for presentation, at any given time along a given performance timeline, performance synchronized video of one or more of the contributors. Selections are in accord with a visual progression that codes a sequence of visual layouts in correspondence with other coded aspects of a performance score such as pitch tracks, backing audio, lyrics, sections and/or vocal parts.