Signal Processing System for Dynamic Audio Synchronization
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Solution Overview
Problem
Existing technologies fail to effectively synchronize the reproduction of audio or video signals with a user's performance, lacking the ability to dynamically adjust the timing based on the user's actions during the playback of a musical piece.
Innovation Solution
A signal processing system that includes an electronic controller with a processor to acquire the user's indicated position and execute time stretching of the time series signal, allowing the reproduction device to synchronize with the user's performance by adjusting the playback speed based on the user's performance speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If time stretching is applied to synchronize reproduction with user performance, then synchronization accuracy is improved, but processing complexity increases
Solution Approach 1:
The system pre-calculates and stores time stretching parameters for various performance positions before actual reproduction. When the user indicates a performance position, the pre-prepared parameters are directly applied, avoiding real-time complex calculations and reducing processing complexity while maintaining synchronization accuracy.
2Adaptability or versatility
If the system dynamically adjusts playback speed to follow user performance, then adaptability is improved, but control complexity increases
Solution Approach 1:
The system dynamically adjusts the playback speed of the time series signal based on the user's indicated performance position. By making the reproduction speed variable rather than fixed, the system adapts to different user performance speeds while maintaining synchronization, resolving the contradiction between adaptability and control complexity through automated dynamic adjustment.
Data Source
AI summary
A signal processing system causes a reproduction device to reproduce a time series signal that follows reproduction of a musical piece. The signal processing system includes an electronic controller including at least one processor. The electronic controller is configured to execute a plurality of units including an acquisition unit configured to acquire an indicated position indicated by a user in the reproduction of the musical piece, and a control unit configured to execute time stretching of the time series signal in accordance with the indicated position.