Audio Playback Control for Scratch Practice Without Fader Sync
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Solution Overview
Problem
Scratching techniques in DJ instruments require precise operation of both the turntable platter and cross fader, making it difficult for beginners to master.
Innovation Solution
An audio data processing device with features like a playing sound volume controller, time interval calculator, and playing position controller that assist in practicing scratching by controlling sound volume, shifting playing positions, and managing operation intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scratching technique is practiced by manually manipulating cross fader and turntable platter, then scratching skill can be improved, but operation complexity and difficulty increase due to need for precise coordination
Solution Approach 1:
The system enables self-service by having the audio data processing device automatically perform the scratching operation based on detected user input. When the user operates the cross fader or turntable platter, the system automatically controls the audio playback to execute the scratching effect, eliminating the need for the user to manually coordinate multiple controls simultaneously.
Solution Approach 2:
The audio data processing device acts as an intermediary between the user's simple input and the complex scratching operation. It receives basic user actions (cross fader movement or platter rotation) and translates them into coordinated audio playback control, handling the synchronization complexity internally rather than requiring the user to manage it directly.
2Reliability
If user manually controls both cross fader and turntable platter for scratching, then scratching effect can be achieved, but time consumption for practice increases due to difficulty in synchronization
Solution Approach 1:
The system incorporates feedback by detecting the user's operation on the cross fader or turntable platter and automatically adjusting the audio playback accordingly. The time interval calculator monitors the timing of operations and provides feedback control to the playing position controller, ensuring proper synchronization without requiring the user to manually coordinate timing.
Solution Approach 2:
The system performs preliminary actions by pre-calculating the necessary audio playback adjustments based on detected user inputs. Before the user completes their manual operation, the system has already determined the appropriate playing position and timing corrections, reducing the overall time needed for practice by eliminating manual synchronization delays.
3Ease of operation
If automated playing position control is implemented, then ease of operation improves, but device complexity increases
Solution Approach 1:
The audio data processing device performs multiple functions within a single integrated system. It simultaneously handles cross fader operation detection, turntable platter operation detection, time interval calculation, and playing position control. By consolidating these functions into one device, the system avoids the complexity of multiple separate control devices while maintaining ease of operation.
Data Source
AI summary
An audio data processing device is provided including a player configured to play an audio data, a playing direction switcher configured to switch a playing direction of the audio data between a forward direction and a reverse direction in response to an operation signal, and a play effect selector configured to apply a first play effect to the audio data when the playing direction is the forward direction and configured to apply a second play effect different from the first play effect to the audio data when the playing direction is the reverse direction.