Loop Recording Control for Switching Musical Sections

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Solution Overview

Problem

Existing recording/playback devices can only perform recording and playback for one section, limiting the ability to create musical pieces with different sections like verse/chorus forms.

Innovation Solution

A recording/playback device that generates timepoints based on user instructions for recording and playback control, allowing for the separation and switching between musical sections, enabling the recording and playback of diverse musical expressions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If recording and playback are performed for only one section, then the device operation is simple, but the ability to create musical pieces with different sections like verse/chorus forms is limited

Engineering Contradiction:
Improveability to create musical pieces with different sectionsVSAvoiddevice operation complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent divides the recording and playback process into multiple distinct sections (first section with first and second timepoints, second section with third and fourth timepoints). Each section can be independently controlled with its own recording and playback parameters, enabling the creation of musical pieces with different sections like verse and chorus while maintaining clear operational boundaries that prevent excessive complexity

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If multiple voices are recorded with separate timepoints, then diverse musical expressions are enabled, but the control logic becomes more complex

Engineering Contradiction:
Improvediverse musical expressionsVSAvoidcontrol logic complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the control logic into distinct timepoint groups (first timepoint and second timepoint for first voice, third timepoint and fourth timepoint for second voice). Each voice has its own clearly defined control parameters and operational phases, allowing diverse musical expressions through multi-voice recording while maintaining organized, manageable control logic through systematic segmentation

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP3998600B1Recording/playback device and method
Publication Date: 2026.04.08 ROLAND CORP
  • EP3998600B1 patent drawingFigure 1
  • EP3998600B1 patent drawingFigure 2
  • EP3998600B1 patent drawingFigure 3

AI summary

The present invention enables diverse expression in a recording/playback device that can perform overdubbing. Provided is a recording/playback device that stores an inputted voice and plays back the stored voice. The present invention has: a determination means that sets timepoints using sequentially acquired instructions as a trigger; a recording control means that records a voice inputted during the period from a first timepoint to a second timepoint as a first voice, and records a voice inputted during the period from a third timepoint to a fourth timepoint as a second voice; and a playback control means that starts loop playback of the first voice from the second timepoint and stops the loop playback at the third timepoint, and starts loop playback of the second voice from the fourth timepoint.