Dual-Buffer Audio Processing for Triggered DJ Feedback Effects
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Solution Overview
Problem
Existing audio signal processing techniques struggle to apply effects like delay, echo, and reverb effectively during complex DJ performances, particularly when intricate operations are involved.
Innovation Solution
An audio signal processing apparatus with a first buffer, a feedback path connected to a second buffer, and a gate that turns on/off based on a trigger operation, allowing the audio signal stored in the first buffer to be repeatedly played as an effect sound through the feedback path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single buffer is used to apply effects on music pieces during DJ performance, then the device structure remains simple, but it becomes difficult to appropriately apply effects when complicated playing operations are performed
Solution Approach 1:
The patent divides the single buffer into two separate buffers: a first buffer for temporarily storing the original audio signal and a second buffer for storing the feedback signal. This segmentation allows independent control of signal paths, enabling appropriate effect application during complicated DJ operations while maintaining manageable system complexity through modular architecture
Solution Approach 2:
The patent introduces a feedback path as an intermediary mechanism that connects the output side of the first buffer back to the second buffer. This intermediary structure enables flexible signal routing and effect application without requiring complete redesign of the buffer system, resolving the contradiction between operational ease and structural complexity
2Productivity
If effects are applied using a buffer during complex DJ operations, then effect functionality is provided, but the processing load increases and smooth transitions become difficult to ensure
Solution Approach 1:
By segmenting the buffer system into first and second buffers with distinct functions, the patent distributes processing loads across separate memory structures. The first buffer handles original signal storage while the second buffer manages feedback signal storage, preventing processing bottlenecks and ensuring smooth transitions during complex DJ operations
Solution Approach 2:
The feedback path creates a closed-loop system where the second buffer feeds processed signals back into the system. This feedback mechanism enables continuous, smooth transitions by maintaining signal continuity and allowing progressive effect application without abrupt interruptions, even during complicated playing operations
Data Source
AI summary
Provided is an audio signal processing apparatus including: a first buffer configured to temporarily store an audio signal; a feedback path whose start point and end point are located close to an output side of the first buffer; and a second buffer connected in the feedback path and configured to temporarily store the audio signal.