Dual-Channel Audio Noise Suppression via Electromagnetic Coupling
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Solution Overview
Problem
Audio production tools with compact form factors face challenges in reducing unwanted noise caused by electromagnetic coupling between circuitry and sources of electromagnetic energy, such as wireless transmission components, which can degrade audio signal quality.
Innovation Solution
Implementing a dual-channel system where one channel carries the audio signal and another dedicated 'noise channel' captures noise from electromagnetic sources, allowing for identification and modification of specific noise types using processing circuitry, including digital signal processing and filtering, to isolate and reduce unwanted noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a compact form factor is used in audio production tools, then portability and ease of use are improved, but electromagnetic coupling between circuitry and electromagnetic energy sources increases causing unwanted noise
Solution Approach 1:
The patent divides the audio signal processing into separate functional blocks: an audio input block, a noise detection block, and a signal processing block. This segmentation allows independent optimization of each function and enables targeted noise reduction without affecting the entire system.
Solution Approach 2:
The patent introduces an intermediary processing stage that detects electromagnetic noise separately from the audio signal and applies corrective processing. This intermediary block acts as a mediator between the noisy audio signal and the final output, reducing unwanted noise while preserving audio quality.
2Reliability
If electromagnetic noise reduction processing is applied to audio signals, then audio signal quality is improved, but processing complexity increases
Solution Approach 1:
The patent performs preliminary noise detection and characterization before applying noise reduction processing. By identifying the nature and characteristics of electromagnetic noise in advance, the system can apply targeted processing algorithms that are more efficient and less complex than general-purpose noise reduction methods.
Solution Approach 2:
The patent adjusts processing parameters based on the detected noise characteristics rather than applying fixed complex processing. By dynamically changing processing parameters according to the identified noise type and level, the system achieves effective noise reduction with variable complexity rather than consistently high complexity.
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
Effectively reduces unwanted noise in audio signals by identifying and addressing specific noise types, maintaining high-quality audio production while preserving portability and ease of use in audio production tools.
Implementation Method 1
audio circuitry disposed inside the housing and electrically coupled to the audio input port
Implementation Method 2
noise caused by electromagnetic coupling between circuitry and sources of electromagnetic energy
Data Source
AI summary
Some embodiments of the invention are directed to techniques for suppressing or attenuating noise in audio circuitry, such as which may result from a source of electromagnetic energy being coupled to the audio circuitry. Some embodiments may employ two separate channels, a first of which captures audio information and noise, and a second of which captures the noise. Noise compensation may be performed by transforming the signal of the first channel in accordance with noise in the second channel which is identified as comprising a particular type of noise.