Mobile Audio Source Separation for Independent Volume Control
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Solution Overview
Problem
Current mobile terminals cannot adjust the volume of specific sound sources within a multimedia file independently, forcing users to adjust the volume of all sound sources simultaneously, which limits user convenience when listening to multimedia content.
Innovation Solution
A mobile terminal with a controller that separates audio signals into individual sound sources and allows manual or automatic volume control of these sources, enabling users to adjust the volume of specific sound sources while playing videos or music.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If volume adjustment is applied to the whole audio signal, then the operation is simple, but the user cannot emphasize a specific sound source
Solution Approach 1:
The patent segments the mixed audio signal into multiple independent sound sources using source separation technology. Each sound source (e.g., different speakers, instruments) is extracted as a separate channel, allowing individual volume control for each source while maintaining simple user interaction through dedicated control interfaces.
2Adaptability or versatility
If volume of each sound source is adjusted independently, then sound source emphasis is achieved, but the device complexity increases
Solution Approach 1:
The patent introduces an intermediary processing layer that automatically separates mixed audio signals into distinct sound sources using source separation algorithms. This intermediary system handles the complex signal processing tasks, allowing the user interface to remain simple while achieving fine-grained control over individual sound sources.
3Measurement precision
If automatic sound source separation is implemented, then precise volume control is achieved, but the processing time and complexity increase
Solution Approach 1:
The patent performs sound source separation and identification in advance during audio playback initialization or transitions. By pre-processing the audio signal to identify and separate sound sources before user interaction, the system reduces real-time processing requirements and enables faster, more responsive volume control adjustments.
Data Source
AI summary
A mobile terminal and controlling method thereof are disclosed, which facilitates a terminal to be used in further consideration of user's convenience. The present invention includes a display unit configured to display an image signal of a video, an audio output unit configured to output an audio signal of the video, and a controller configured to separate the audio signal of the video into sound sources, and control a volume of at least one of the sound sources manually or automatically.