Dynamic Audio Resolution Adjustment for Power Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Increasing the bit number for audio signal quantization in electronic devices to provide high-quality sound sources leads to increased load and current consumption, compromising system stability.
Innovation Solution
An electronic device processes audio signals by identifying volume settings and adjusting the resolution accordingly, using a first resolution when the volume setting falls within a designated range and a second resolution when it falls outside, thereby optimizing power usage and sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the bit number for quantization of audio signal is increased to provide high-quality sound source, then sound quality is improved, but load and current consumption increase and system stability is reduced
Solution Approach 1:
The patent dynamically changes the quantization bit number parameter based on the volume level of the audio signal. When volume is high, a lower bit number (e.g., 16-bit) is used, and when volume is low, a higher bit number (e.g., 24-bit or 32-bit) is used. This parameter adaptation allows the system to maintain sound quality where needed while reducing current consumption when high precision is not necessary for the user to perceive.
Solution Approach 2:
The patent applies different processing qualities (bit numbers) to different volume ranges. Instead of uniformly applying high-bit quantization across all volume levels, it selectively applies high precision only in the low-volume range where noise is more perceptible, while using lower precision in the high-volume range where the user is less sensitive to quantization noise. This local quality differentiation resolves the contradiction between sound quality and energy consumption.
2Measurement precision
If the bit number for quantization of audio signal is increased to provide high-quality sound source, then sound quality is improved, but system stability is reduced
Solution Approach 1:
The system dynamically adjusts the quantization bit number parameter based on volume settings, changing between 16-bit, 24-bit, and 32-bit modes. This parameter adaptation prevents the system from continuously operating in high-load 32-bit mode, thereby maintaining system stability while preserving sound quality when necessary.
Solution Approach 2:
The patent implements a dynamic switching mechanism that adjusts the quantization bit number in real-time based on the detected volume level. The system transitions between different processing modes (16-bit for high volume, 24-bit for medium volume, 32-bit for low volume), creating a dynamic response that maintains both sound quality and system stability under varying operating conditions.
Data Source
AI summary
Various embodiments of the present invention relate to a device and method for processing an audio signal by using a setting related to a volume of an audio signal in an electronic device. The electronic device may comprise a sound output device and a processor, wherein the processor is configured to: check a setting related to a volume of an audio signal to be output using the sound output device; when the setting related to the volume falls into a first designated range, process the audio signal in a state where the range of the volume is set to have a first resolution; when the setting related to the volume falls into a second designated range, process the audio signal in a state where the range of the volume is set to have a second resolution; and output the audio signal by using the sound output device, the audio signal having been processed in a state where the range of the volume is set to have a resolution corresponding to one of the first resolution and the second resolution. Other embodiments may be possible.