Audio Processing System Microphone Failure Detection
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Solution Overview
Problem
Existing audio processing systems face challenges in maintaining audio signal quality and directivity when one or more microphones fail, leading to changes in output signals that can affect subsequent processing stages and stability.
Innovation Solution
An audio processing system comprising multiple microphones and a hardware processor that detects microphone failures and adjusts signal processing to generate output signals based on the remaining functional microphones, using delay units and switches to maintain signal quality and directivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple microphones are used to collect audio signals, then audio signal quality and directivity are improved, but system complexity and failure risk increase
Solution Approach 1:
The patent divides the audio processing system into independent microphone channels, each with its own failure detection and signal processing path. This segmentation allows the system to handle microphone failures independently without affecting the entire system, thus maintaining audio signal quality while managing system complexity through modular design.
Solution Approach 2:
The patent dynamically changes processing parameters based on microphone status. When a microphone fails, the system adjusts the output signal generation parameters to rely solely on the functional microphone, maintaining appropriate audio quality and directivity characteristics while adapting to the changed system state.
2Measurement precision
If multiple microphones are used to collect audio signals, then directivity is improved, but reliability decreases due to higher failure probability
Solution Approach 1:
The patent implements preliminary failure detection mechanisms that monitor microphone status before failures affect audio output. By detecting failures early and switching to backup processing modes in advance, the system maintains reliability while preserving the directivity benefits of multiple microphones during normal operation.
Solution Approach 2:
The patent employs feedback mechanisms where the system continuously monitors microphone performance and adjusts signal processing accordingly. When failures are detected through feedback from detection circuits, the system automatically reconfigures to maintain audio quality and directivity, thereby improving overall system reliability without sacrificing performance.
3Stability of the object's composition
If failure detection and mode switching are implemented, then system stability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the failure detection and mode switching functions into separate, dedicated circuits and processing paths. By isolating these stability-enhancing functions from the main audio processing chain, the system achieves improved stability while minimizing the impact on overall processing complexity through functional separation.
Data Source
AI summary
An audio processing system includes a first microphone, a second microphone, and a processor. The first microphone collects first audio and outputs a first audio signal. The second microphone collects second audio and outputs a second audio signal. The processor detects presence or absence of failure of the first microphone and the second microphone, and transmits a detection result as failure detection information. The processor generates a first output signal on the basis of one of the first audio signal and the second audio signal. The processor generates the first output signal in a first mode when the failure detection information represents that the second microphone fails. The first mode is a mode in which the processor generates the first output signal on the basis of the first audio signal output by the first microphone for which no failure is detected.