Four-Channel Audio Processing for Mobile Speaker Sound Quality
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Solution Overview
Problem
The integration of internet and electronic technologies in mobile consumer electronics has led to increased demands for improved user experience, particularly in sound quality, which is compromised by the ultra-thin design of modern mobile devices with small speakers, resulting in poor sound output and limited sound field width.
Innovation Solution
A processing method and system for an audio multichannel output speaker that retrieves and separates audio signals into independent channels, performs frequency-division processing, and converts them to analog signals for separate output to multiple speakers, enhancing sound quality and bass performance without mixing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If ultra-thin design with small speakers is used, then device thickness is reduced, but sound output quality deteriorates
Solution Approach 1:
The patent divides the audio output system into multiple independent channel speakers (first channel speaker, second channel speaker, third channel speaker, fourth channel speaker) instead of using a single mixed stereo output. Each speaker handles a specific audio channel separately, allowing independent optimization of sound quality for each channel while maintaining the ultra-thin device design.
2Device complexity
If two-speaker stereo output is used, then device complexity is reduced, but sound field width is limited
Solution Approach 1:
The patent transitions from a traditional two-channel stereo system to a four-channel spatial audio system. By adding more audio channels (first channel, second channel, third channel, fourth channel) and their corresponding speakers, the sound field width and spatial distribution are significantly expanded, creating a more immersive audio experience.
3Device complexity
If audio signals are mixed before output, then processing complexity is reduced, but sound details are lost
Solution Approach 1:
The patent separates audio signals into distinct channels (first channel signal, second channel signal, third channel signal, fourth channel signal) and processes each channel independently through its own digital-to-analog conversion and speaker output. This segmentation prevents signal mixing that would cause loss of audio details, while the independent processing paths maintain manageable system complexity.
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
This approach improves sound volume and detail by separately processing each audio channel, overcoming the limitations of micro-speakers and stereo outputs, resulting in higher loudness and more prominent sound details compared to traditional two-speaker systems.
Implementation Method 1
perform digital-to-analog conversion on the data of the four channel signals respectively
Data Source
AI summary
A processing method and a processing system of an audio multichannel output speaker and a mobile phone are disclosed. The method includes: retrieving an audio and video file and establishing four channel signals for audio signals in the audio and video file with independent channel indications; performing frequency-division processing on the four channel signals respectively, and storing data of the four channel signals after frequency-division processing in order; performing digital-to-analog conversion on the data of the four channel signals respectively, and respectively sending converted analog signal data to speakers corresponding to the four channel signals one-to-one.