Audio Processing Circuit Compensation for Power Voltage Drops
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Solution Overview
Problem
In terminal devices such as mobile phones and smartwatches, the output volume of loudspeakers significantly decreases in low temperature or low power capacity environments, affecting user experience due to changes in power supply voltage.
Innovation Solution
A method and device that determine the current output voltage of the power supply and configure the audio processing circuit with target parameters to compensate for voltage changes, reducing the impact on loudspeaker output volume by adjusting filtering and gain parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the terminal device operates in low temperature or low power capacity environment, then the power supply voltage decreases, but the loudspeaker output volume drops significantly
Solution Approach 1:
The patent changes the operating parameters of the audio processing circuit based on the detected power supply voltage. When voltage drops are detected (indicating low temperature or low power capacity conditions), the system adjusts parameters such as digital gain, analog gain, and filtering characteristics to compensate for the voltage drop and maintain consistent audio output volume across varying temperature and power conditions.
2Use of energy by moving object
If the power supply voltage changes due to temperature or power capacity, then energy availability changes, but audio output volume becomes inconsistent
Solution Approach 1:
The patent implements a feedback mechanism where the audio processing circuit continuously monitors the power supply voltage and adjusts its operating parameters accordingly. The system detects voltage drops and responds by modifying gain and filtering parameters to maintain stable audio output, creating a closed-loop control system that adapts to changing power conditions in real-time.
3Device complexity
If no compensation is applied, then the device structure remains simple, but user experience deteriorates in extreme conditions
Solution Approach 1:
The patent applies preliminary action by proactively adjusting audio processing parameters before the user perceives any degradation in audio output. The system continuously monitors power supply conditions and pre-adjusts gain and filtering parameters to compensate for anticipated voltage drops, ensuring consistent audio performance without requiring user intervention or awareness of the underlying power variations.
Data Source
AI summary
A method and device for processing information are provided. The method for processing information includes: determining a current output voltage of a power supply in a terminal device; determining a target parameter of an audio processing circuit in the terminal device according to the current output voltage; and configuring the audio processing circuit for processing an audio signal according to the target parameter. With the embodiments of the present disclosure, an impact of a change of the output voltage of the power supply on output volume of a loudspeaker can be reduced, thereby improving user experience.