Adaptive Amplifier Voltage Control for Low-Frequency Speaker Output
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Solution Overview
Problem
Existing audio devices face challenges in providing optimal sound play quality, particularly in low frequencies, due to insufficient driving power and inefficient power consumption, leading to poor sound dynamics and increased power consumption.
Innovation Solution
An electronic device supplies adaptable output voltage to a power amplifier based on detected speaker operating states, using a voltage regulation unit with multiple circuits to adjust voltage levels according to audio frequency, ensuring higher voltage for lower frequencies to enhance sound quality and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed voltage is supplied to the power amplifier, then the device structure is simple, but the sound play quality at low frequencies is poor and power consumption is high
Solution Approach 1:
The patent implements dynamic voltage regulation by switching between different voltage regulation circuits based on audio frequency detection. The processor detects the audio frequency and dynamically selects which voltage regulation circuit to activate, transforming the fixed voltage system into an adaptive dynamic system that optimizes power delivery for different frequency ranges.
Solution Approach 2:
The voltage regulation unit is segmented into multiple independent circuits (first voltage regulation circuit, second voltage regulation circuit, third voltage regulation circuit), each responsible for regulating to a different second voltage. This segmentation allows selective activation of specific circuits based on audio frequency, providing optimized voltage for different frequency ranges without requiring all circuits to operate simultaneously.
2Reliability
If higher voltage is provided for low frequency audio, then sound quality improves, but power consumption increases
Solution Approach 1:
The system changes the voltage parameter dynamically based on audio frequency. For low frequency audio signals, the system selects voltage regulation circuits that output higher second voltages to improve sound quality. For high frequency signals, lower voltage circuits are selected, reducing power consumption. This parameter adaptation resolves the contradiction between quality and energy usage.
Solution Approach 2:
Different voltage regulation circuits provide different voltage levels tailored to specific frequency ranges. The system applies higher voltage locally to low frequency signals that require more power, while using lower voltage for high frequency signals, optimizing energy distribution according to the specific needs of different audio components.
3Reliability
If multiple voltage regulation circuits are used to provide adaptable voltage, then sound play effect improves, but device complexity increases
Solution Approach 1:
The system uses dynamic switching control where the processor detects audio frequency and selectively activates only the necessary voltage regulation circuit. This dynamic approach allows multiple circuits to be available for different frequency ranges while ensuring that only one circuit operates at a time, reducing the practical complexity compared to having all circuits active simultaneously.
Solution Approach 2:
The voltage regulation unit is divided into multiple independent circuits, each handling a specific voltage level. This segmentation allows the system to provide adaptable voltage for different audio frequencies while keeping each individual circuit relatively simple. The modular structure makes the overall system manageable despite having multiple circuits.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution improves sound play effect by providing better sound quality and reducing power consumption, offering a clearer, fuller, and more dynamic auditory experience while minimizing noise and heat generation.
Implementation Method 1
the voltage regulation unit includes a first circuit, a second circuit, and a third circuit... the first circuit is configured to adjust the first voltage to the second voltage of the first value, the second circuit is configured to adjust the first voltage to the second voltage of the second value
Implementation Method 2
The power amplifier is configured to amplify an output power of the audio electrical signal under driving of the second voltage
Implementation Method 3
The speaker is configured to convert the amplified audio electrical signal into an audio signal
Data Source
AI summary
An electronic device includes devices such as a power source, a power amplifier, and a speaker. The electronic device may supply an adaptable output voltage to the power amplifier based on a detected operating state of the speaker. Specifically, by designing a connecting circuit between the power source and the power amplifier, when the power amplifier operates on different circuits, the power source can provide different output voltages for the power amplifier, and then provide an adaptable driving power for the speaker.