Audio Processing Apparatus Analog Digital Frontend Echo Control
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Solution Overview
Problem
Current audio processing systems face challenges in efficiently converting and transmitting analog voice signals to digital signals over networks, particularly in maintaining signal integrity and reducing echo effects during voice over IP processing.
Innovation Solution
The proposed audio processing apparatus integrates an analog frontend and a digital frontend with advanced components such as subscriber line interfaces, analog/digital converters, echo compensation filters, and voice over IP processing units, enabling efficient conversion and transmission of voice signals over IP networks while minimizing echo and maintaining signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If analog voice signals are converted to digital signals for transmission over IP networks, then transmission efficiency and network compatibility are improved, but signal integrity and echo control deteriorate
Solution Approach 1:
The audio processing system is divided into separate analog frontend and digital frontend modules, each optimized for their respective signal types. The analog frontend handles analog signal conditioning with echo compensation, while the digital frontend handles digital signal processing and IP packetization, allowing each segment to specialize without compromising overall signal integrity
Solution Approach 2:
An analog-to-digital converter (ADC) and digital-to-analog converter (DAC) serve as intermediary components between the analog and digital frontends. These converters, combined with echo compensation filters, act as mediators that maintain signal fidelity during the analog-digital transition while enabling efficient digital transmission over IP networks
2Reliability
If echo compensation filters are added to reduce echo effects, then voice quality is improved, but device complexity increases
Solution Approach 1:
The echo compensation filter is integrated into the analog frontend circuitry rather than being a separate external component. This merging of echo compensation functionality with the existing analog signal processing path reduces overall device complexity while maintaining voice quality through effective echo reduction
3Reliability
If advanced audio processing components are integrated, then signal integrity and echo reduction are improved, but manufacturing complexity increases
Solution Approach 1:
The audio processing apparatus is designed as modular segments (analog frontend, digital frontend, ADC, DAC) that can be manufactured separately using optimized processes and then assembled. This segmentation allows each module to be manufactured with specialized processes appropriate to its requirements, reducing overall manufacturing complexity despite the advanced functionality of the integrated system
Data Source
AI summary
Audio processing systems and corresponding methods are disclosed, wherein the audio processing system comprises at least one of an analog portion and a digital portion.