Rotary Audio Control for Simple Scratch Effect Playback
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Solution Overview
Problem
Audio devices, such as those used for DJ performances, require complex and skilled operations for scratch playback, which can deter users with little experience or knowledge from enjoying high-performance effects.
Innovation Solution
An audio device with a detector to sense the rotational angle of a rotary operation element, a determination unit to identify rotation direction reversals, and an effect playback controller to generate sounds based on angle differences, allowing for simple scratch playback operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional scratch playback operation is used, then high performance effect can be achieved, but user operation becomes complicated and difficult
Solution Approach 1:
The system automatically detects rotation direction reversals and calculates angle differences without requiring user computation. The determination unit pre-processes rotational angle data to identify reversal points, and the effect playback controller automatically selects and plays back appropriate effect sounds based on pre-defined angle difference ranges, eliminating the need for users to manually time switching operations.
Solution Approach 2:
The audio device performs self-monitoring of rotary operation element rotation through the detector and determination unit. The system automatically determines when rotation direction reverses and calculates the angle difference from the reference angle, then autonomously triggers the appropriate effect sound playback without requiring user intervention or skillful manual operation.
2Ease of operation
If automatic effect playback is implemented, then ease of operation improves, but device complexity increases
Solution Approach 1:
The detector serves multiple functions: it monitors rotational angle continuously, identifies when rotation direction reverses, and provides data for calculating angle differences. The determination unit both detects reversal events and calculates timing parameters. The effect playback controller both selects effect sounds based on angle differences and triggers their playback, consolidating multiple functions into integrated components rather than separate dedicated units.
Data Source
AI summary
Provided is an audio device including: a detector configured to detect a rotational angle of a rotary operation element; a determination unit configured to determine, based on the rotational angle, whether a rotation direction of the rotary operation element is reversed; and an effect playback controller configured to play back an effect sound associated with an angle difference between the rotational angle based on when the rotation direction is reversed and a reference angle.