Audio Processor Amplifier Shutdown for Abnormal Data Noise Prevention
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Solution Overview
Problem
In audio technology, issues such as poor circuit design, impedance mismatch, and unstable power supply or audio data can lead to audio data loss or overflow, resulting in noise generation and a compromised user hearing experience.
Innovation Solution
An audio processor circuit and method that includes a receiver circuit, storage circuit, digital-to-analog converter circuit, amplifier circuit, detector circuit, and control circuit. This circuit automatically turns off the amplifier when abnormal conditions occur, such as non-multiple data volume or data overflow, preventing noise from being output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the amplifier circuit continues to operate during abnormal conditions (data loss or overflow), then the audio processing system maintains continuous operation, but noise is generated and output to the user
Solution Approach 1:
The detector circuit performs preliminary detection of audio data abnormalities (data loss or overflow conditions) before the noise can be generated and output. By detecting the abnormal state in advance and triggering the control circuit to turn off the amplifier, the system prevents harmful noise from reaching the user while maintaining system operational status.
Solution Approach 2:
The detector circuit continuously monitors the audio data stream and provides feedback to the control circuit about abnormal conditions. This feedback mechanism enables the control circuit to respond by turning off the amplifier circuit when noise-generating conditions are detected, creating a closed-loop system that prevents harmful output.
2Object-generated harmful factors
If the amplifier circuit is turned off automatically when abnormal conditions are detected, then noise output is prevented, but the audio processing operation is interrupted
Solution Approach 1:
By detecting abnormal conditions before they result in noise output, the system takes preliminary action to prevent harm rather than continuously operating and then correcting. The amplifier is turned off only when necessary, minimizing interruption duration while ensuring noise prevention.
Solution Approach 2:
The system applies partial action by turning off only the amplifier circuit rather than the entire audio processing system. This allows other components to remain operational and quickly resume normal function once the abnormal condition is resolved, minimizing overall system interruption while still preventing noise output.
Data Source
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AI summary
An audio processor circuit includes a storage circuit, a digital-to-analog converter circuit, and an amplifier circuit. The storage circuit is configured to store digital audio data from an electrical device. The digital-to-analog converter circuit is configured to convert the digital audio data from the storage circuit into an analog audio signal. The amplifier circuit is configured to provide an output audio signal to an audio playing circuit according to the analog audio signal. If a total data volume of the digital audio data stored in the storage circuit is not a multiple of a throughput or the total data volume of the digital audio data stored in the storage circuit is equal to or greater than an upper limit value, the amplifier circuit is turned off such that the amplifier circuit stops providing the output audio signal to the audio playing circuit.