Analog Audio Monitoring Circuit for Near-Zero Latency
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Solution Overview
Problem
Existing audio monitoring systems in theatrical performances suffer from latency, signal degradation, feedback loops, and the need for additional equipment and personnel, leading to vocal strain and reduced vocal accuracy.
Innovation Solution
An audio enhancement system that utilizes an enhancement circuit with amplifiers powered by a DC power source, eliminating latency by amplifying sound signals directly in the analog domain and eliminating the need for additional equipment or personnel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If digital signal processing and multiple intermediaries are used in audio monitoring systems, then signal processing capability is improved, but latency increases and vocal accuracy deteriorates
Solution Approach 1:
The patent extracts and eliminates unnecessary digital processing intermediaries from the audio signal path. By using direct analog amplification instead of digital signal processing, the system removes multiple conversion and processing steps that contribute to latency, thereby maintaining vocal accuracy while preserving essential signal processing capability through analog means.
Solution Approach 2:
The patent replaces the digital electronic system with an analog electronic system. By substituting digital-to-analog converters, digital signal processors, and associated software with direct analog amplification circuits, the system eliminates the inherent latency of digital processing while maintaining the necessary signal processing functions through analog circuitry.
2Reliability
If additional equipment and personnel are added to audio monitoring systems, then monitoring quality is improved, but system complexity and cost increase
Solution Approach 1:
The patent combines the microphone, amplifier, and speaker functions into a single integrated audio monitoring device. This consolidation eliminates the need for separate equipment and personnel to operate multiple components, reducing system complexity while maintaining monitoring quality through integrated analog signal processing.
Solution Approach 2:
The patent creates a universal audio monitoring device that performs multiple functions (signal reception, amplification, and output) within a single system. This multi-functional approach eliminates the need for separate specialized equipment and personnel for each function, thereby reducing overall system complexity and cost while maintaining comprehensive monitoring capability.
3Loss of time
If analog signal flow with speakers is used, then latency is minimized, but feedback loops are created when speakers are near microphones
Solution Approach 1:
The patent extracts and removes the speaker component from the audio monitoring system, replacing it with a wireless transmission device. This elimination of the physical speaker prevents the formation of feedback loops between speakers and microphones while preserving the low-latency analog signal processing through direct wireless transmission of the audio signal.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Achieves negligible latency, reduces signal degradation, and eliminates the need for additional equipment, ensuring consistent and high-quality sound reception directly to the performer.
Implementation Method 1
A byproduct of using the aforementioned sound systems is one or more of the following: reduction in vocal accuracy (e.g., pitch, and rhythm), vocal strain (e.g., oversinging), latency/delay between reception of sound and communication of sound to the user
Data Source
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AI summary
An exemplary audio enhancement system substantially eliminates latency by returning audio input signals in amplified form directly in the analog domain to the source, thereby reducing signal degradation and removing redundancy from digital and analog audio transmission and processing architectures.