Audio Processing Circuit Gain Control for Voltage-Dependent Speaker Volume
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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 adjust audio signal processing, reducing the impact of voltage changes on loudspeaker output volume, including configuring filters, gainers, and dynamic range controllers based on detected temperature and power capacity.
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 adjusts the gain parameter of the audio processing circuit based on the detected power supply voltage. When voltage decreases due to low temperature or low power capacity, the gain is increased to compensate, thereby maintaining consistent loudspeaker output volume across different operating conditions
Solution Approach 2:
The system continuously detects the power supply voltage and uses this feedback to dynamically adjust the audio processing circuit parameters. This closed-loop control ensures that the loudspeaker output remains stable despite changes in power supply conditions
2Use of energy by moving object
If the power supply voltage changes with temperature and power capacity, then energy availability varies, but the audio output consistency deteriorates
Solution Approach 1:
The audio processing circuit parameters, particularly the gain, are dynamically changed according to the detected power supply voltage. This allows the system to adapt to energy availability variations and maintain consistent audio output characteristics
Solution Approach 2:
The system transitions from a static audio processing configuration to a dynamic one where parameters are continuously adjusted based on real-time power supply voltage detection, enabling the audio output to remain consistent despite varying energy conditions
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.