Loop Sound Data Creation with Beat Indicator Synchronization
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Solution Overview
Problem
Conventional loopers face challenges in creating high-quality loop data with a stable rhythm due to difficulties in accurately setting the recording time for one bar, leading to unstable and poor-quality musical compositions, especially for inexperienced players.
Innovation Solution
A recording and playback device with a storage control section, loop sound data creation section, repeat playback section, and overdubbing section that stores and manages sound data in bar units, allowing for accurate loop sound data creation by connecting and overdubbing sound data during replay, eliminating the need for precise timing of the recording switch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the recording switch is operated to record sound data for one bar, then new material can be overdubbed, but the timing fluctuates and becomes faster or slower than the intended beats, resulting in unstable and poor-quality musical composition
Solution Approach 1:
The patent introduces a beat indicator sound as an intermediary element between the recording operation and the actual sound data. The beat indicator sound serves as a reference marker that is automatically synchronized with the intended beat timing, allowing the recording to capture accurate temporal information without requiring the user to manually time the recording switch operation.
Solution Approach 2:
The system incorporates feedback by continuously monitoring the playback timing of the loop sound data and comparing it against the intended beat structure. The beat indicator sound provides real-time feedback about the actual beat timing, enabling the system to automatically adjust and correct timing fluctuations during the recording process.
2Ease of operation
If the amount of time elapsed from recording start to recording end is considered as one bar, then recording is simple, but it is difficult to operate the recording switch such that the amount of time accurately coincides with the regular amount of time for one bar defined by meter and tempo
Solution Approach 1:
The system performs self-service by automatically determining the bar duration based on the playback characteristics of the loop sound data and the meter/tempo settings. Instead of requiring the user to manually calculate or estimate the correct bar duration, the system independently measures and adjusts the timing parameters to match the intended musical structure.
Solution Approach 2:
The patent dynamically changes the timing parameters of the recording process based on feedback from playback timing analysis. The system adjusts the recorded bar duration parameter to match the actual playback timing, ensuring accuracy without requiring manual intervention or precise user knowledge of musical timing.
3Ease of manufacture
If sound data is recorded without automatic beat synchronization, then recording operation is simple, but high-quality loop data with stable rhythm cannot be created
Solution Approach 1:
The system performs preliminary action by pre-generating beat indicator sounds and establishing the temporal framework before the actual recording begins. The beat indicator sounds are prepared in advance based on the meter and tempo settings, creating a synchronized timeline that guides the recording process and ensures rhythmic stability from the start.
Solution Approach 2:
The patent replaces the mechanical/manual timing system with an automated electronic synchronization system. Instead of relying on the user's manual timing ability or mechanical stopwatches, the system uses electronic beat indicator sounds and automatic timing analysis to synchronize recording with the intended beat structure, achieving more reliable rhythm stability.
Data Source
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AI summary
A recording and playback device (100) according to the present invention stores in a memory section (14) sound data for an amount of time corresponding to a beat which is acquired from an external source, and creates loop sound data in bar units by connecting a plurality of stored sound data. Then, the recording and playback device performs an operation to overlap newly acquired sound data onto the loop sound data while the loop sound data is being repeatedly replayed, and store the overlapping sound data in the memory section (14).