Wireless Headphones Signal Processing for Performance Delay
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Solution Overview
Problem
Wireless headphone sets used by music performers can interfere with musical performances due to movement-related issues and delays in sound transmission, especially in large performance spaces, where traditional audio cables cause inconvenience and extraneous sounds can disrupt the performance.
Innovation Solution
A headphone set configuration that includes multiple receivers, a signal processor for applying processing to audio signals, an adder to combine processed signals, and a sound output device, allowing for wireless transmission and minimizing interference by enabling music performers to focus on their instruments while reducing lag and extraneous noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless headphone sets are used by music performers, then performers can move around with ease and are free from restrictive audio cables, but movement-related issues and delays in sound transmission may interfere with musical performance
Solution Approach 1:
The system divides the audio signal processing into multiple segments: each performer's instrument sound is captured separately, processed individually through signal processors, and then recombined. This segmentation allows independent optimization of each audio channel while maintaining overall coordination, reducing the impact of movement-related interference on the entire system.
Solution Approach 2:
The headphone sets perform preliminary audio mixing and signal processing before the sound reaches the performers' ears. By pre-processing the audio signals to include coordination information and timing adjustments, the system compensates for potential delays and interference that may occur during performance, ensuring stable musical coordination even when performers move around.
2Reliability
If traditional audio cables are used to connect performers, then sound transmission is stable and coordinated, but performers are restricted in movement and experience inconvenience
Solution Approach 1:
The patent replaces the mechanical audio cable connection system with a wireless transmission system. Instead of using physical cables to transmit audio signals between performers, the system uses wireless communication to achieve the same function, thereby eliminating the movement restrictions imposed by cables while maintaining sound transmission stability through digital signal processing and coordination mechanisms.
3Ease of operation
If wireless transmission is used for audio signals, then performers are free from cable restrictions, but delays in sound transmission may occur especially in large performance spaces
Solution Approach 1:
The system performs preliminary processing of audio signals to pre-calculate and compensate for transmission delays. By adjusting the timing of audio signals in advance based on the known wireless transmission characteristics and performance space geometry, the system minimizes the perceptible delay for performers, ensuring that sound arrives at the correct moment even in large performance spaces.
Data Source
AI summary
A headphone set includes receivers, a signal processor that applies a given processing to each of audio signals received by respective ones of the receivers, a first adder that adds left signals together, to which the given processing is applied, a second adder that adds right signals together, to which the given processing is applied, a first sound output device that outputs a sound based on an output signal of the first adder, and a second sound output device that outputs a sound based on an output signal of the second adder.