Audio Signal Source Separation for SNR Improvement
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Solution Overview
Problem
Conventional methods amplify entire sound signals when trying to enhance specific sound sources, which increases background noise levels, failing to improve user experience and maintain a suitable signal-to-noise ratio (SNR).
Innovation Solution
An electronic device and method that identifies and separates specific sound sources through probabilistic identification and directionality analysis, allowing for targeted adjustment of sound sources to enhance user experience without affecting other sound sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the entire original sound signal is amplified to enhance specific sound sources, then the user's sense of presence is increased, but the signal to noise ratio (SNR) does not improve because background music and other sound sources are synchronously adjusted and amplified
Solution Approach 1:
The patent segments the original sound signal into multiple sound sources using probabilistic identification and directionality analysis. By separating the specific sound source from background music and other sounds, the system can amplify only the target sound source without amplifying background noise, thus improving SNR while maintaining sense of presence.
Solution Approach 2:
The patent extracts the specific sound source from the mixed original sound signal through directionality analysis and separation procedures. This extraction allows the system to isolate and amplify only the desired sound source, leaving background music and other sound sources unaffected, thereby improving the signal to noise ratio.
2Illumination intensity
If the entire original sound signal is amplified to enhance specific sound sources, then specific sound sources are enhanced, but background music and other sound sources are also amplified which does not benefit the user
Solution Approach 1:
The patent divides the original sound signal into distinct sound sources through probabilistic identification and directionality analysis. This segmentation enables selective amplification of the specific sound source while keeping background music and other sound sources at their original levels, avoiding unnecessary background noise amplification.
Solution Approach 2:
The patent applies different processing qualities to different parts of the sound signal. The specific sound source receives amplification processing while background music and other sound sources maintain their original quality. This local quality approach ensures that enhancement is applied only where needed, preventing harmful background noise amplification.
Data Source
AI summary
A specific sound source automatic adjusting method and an electronic device using the same are provided. The electronic device includes a first audio recognition unit, a first multi-sound source determination unit, a directivity analysis unit, a directional separation unit, a second audio recognition unit, a second multi-sound source determination unit and an audio adjustment unit. If the number of sound sources of the original sound signal is larger than or equal to 2, the directivity analysis unit performs a directionality analysis procedure on the original sound signal. The directional separation unit separates out at least one specific directional sub-signal from the original sound signal according to the result of directional analysis procedure. If the number of sound sources of the specific directional sub-signal is equal to 1, the audio adjustment unit performs a sound source adjustment procedure.