Voice and Background Audio Separation for Independent Volume Control
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Solution Overview
Problem
Conventional audio-video systems fail to independently control the volume and equalization of voice and background signals, leading to loud audio outputs that disturb neighbors and family members, as increasing voice volume also raises background noise levels.
Innovation Solution
An audio information processing system (AIPS) that segregates voice and background signals, allowing independent volume control and equalization, using techniques like multi-language processing, center channel correlation, and voice detection circuitry, and provides separate processing and presentation of these signals through a home audio-video system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the volume is increased to understand voice content, then the voice becomes audible, but the background sound also increases causing disturbance to neighbors and family members
Solution Approach 1:
The patent segments the audio signal into voice components and background sound components separately. By dividing the audio spectrum into these distinct segments, the system can independently control the volume of each component, allowing voice to be amplified without proportionally increasing background noise that causes disturbance.
Solution Approach 2:
The patent applies different volume control qualities to different audio components. Voice signals receive one volume level while background sounds receive a different volume level, creating local quality differentiation within the audio output. This allows optimized listening conditions without causing disturbance to others.
2Measurement precision
If the volume of the entire audio spectrum is increased to hear voice conversations, then voice becomes audible, but the loud audio output disturbs neighbors and family members
Solution Approach 1:
The system segments audio into voice and background components, enabling selective volume control. This segmentation allows the voice portion to be made audible without making the entire audio spectrum loud, thereby preventing disturbance to neighbors and family members.
Solution Approach 2:
The patent changes the volume parameter differently for voice signals versus background sound signals. By applying parameter changes selectively to different audio components rather than uniformly to the entire audio spectrum, the system achieves voice audibility while minimizing harmful loud output.
Data Source
AI summary
An audio information processing system, which when incorporated in home audio video systems, provides independent volume control capability, independent equalization setting capability and independent special effects capability of voice and background sound, to the home audio-video system. The audio information processing system receives an audio signal and extracts there from a voice signal and a background signal based upon correlation of language tracks, correlation of a center channel with surround sound channels, via a voice detection circuit, or via other means. Once the voice signal and background signal are determined, separate processing is performed, and combining of the separately processed voice and background signals may be performed.