Microphone Signal Correction for Dynamic Call Environments
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Solution Overview
Problem
Conventional electronic devices fail to accurately adapt to changing call environments, leading to suboptimal sound signal processing due to fixed parameters, resulting in poor echo cancellation and noise filtering.
Innovation Solution
An electronic device equipped with a processor that compares energy levels of sound signals to determine spatial and use state information, allowing for real-time adjustment of processing parameters to improve sound quality during calls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed parameters are used for sound signal processing, then device complexity is reduced, but adaptability to changing call environments deteriorates
Solution Approach 1:
The patent implements dynamic parameter adjustment by continuously monitoring acoustic environment characteristics (echo levels, noise floors, frequency responses) and adapting signal processing parameters in real-time. The system transitions from static fixed parameters to dynamic adaptive parameters that respond to environmental changes, resolving the contradiction between simplicity and adaptability.
Solution Approach 2:
The system changes processing parameters based on detected environmental conditions. Specifically, it adjusts echo cancellation parameters, noise suppression thresholds, and equalization settings according to measured acoustic characteristics. This parameter adaptation enables the device to maintain optimal performance across diverse call environments without requiring complex manual configuration.
2Adaptability or versatility
If real-time environmental detection is implemented, then adaptability to call environments is improved, but device complexity increases
Solution Approach 1:
The patent makes the processor perform multiple functions: it processes voice signals for transmission, detects acoustic environment characteristics, determines spatial information, and adjusts processing parameters all through the same processing circuitry. This multi-functionality reduces the need for separate dedicated hardware components for each function, thereby limiting the increase in device complexity while achieving real-time environmental adaptation.
Solution Approach 2:
The system performs self-diagnosis and self-adjustment by automatically detecting its own acoustic environment and adapting its processing parameters without external intervention. The processor monitors its own signal processing performance and autonomously adjusts parameters to optimize echo cancellation and noise suppression, reducing the need for complex external control systems.
3Measurement precision
If spatial information determination is added, then sound signal correction accuracy is improved, but measurement precision requirements increase
Solution Approach 1:
The patent uses the acoustic environment itself as an intermediary to determine spatial information. By analyzing echo characteristics, noise patterns, and frequency responses that naturally occur in different spatial environments, the system infers spatial information without requiring direct physical measurement devices. This indirect measurement approach reduces the difficulty of detection while maintaining accuracy.
Solution Approach 2:
The system continuously measures acoustic characteristics and uses this feedback to refine its spatial information determination. By iteratively comparing expected signal patterns with actual received signals and adjusting its environmental model accordingly, the system improves measurement accuracy over time without requiring increasingly complex measurement hardware.
Data Source
AI summary
An electronic device according to various embodiments of the disclosure may include: a communication module, comprising communication circuitry, configured to perform wireless communication with a network, at least one microphone configured to collect a sound signal, at least one speaker configured to output the sound signal, and at least one processor, comprising processing circuitry, operatively connected to the at least one microphone and the at least one speaker. At least one processor, individually and/or collectively, may be configured to: perform a call connection with an external electronic device through a network using the communication module, process a first sound signal corresponding to a sound signal input from the external electronic device and received through the network, and output the processed first sound signal through the at least one speaker, detect the first sound signal output through the at least one speaker, through the microphone to generate a second sound signal. At least one processor, individually and/or collectively, may compare an energy level of a frequency band equal to or below a reference frequency in the first sound signal with an energy level of a frequency band equal to or below the reference frequency in the second sound signal, and based on a result of the comparison, determine spatial information corresponding to a space in which the electronic device is located.