3D Spatial Audio Reproduction for Distinguishing Secondary Signals
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Solution Overview
Problem
Existing audio reproduction systems struggle to facilitate simultaneous and clear distinction between main and secondary audio signals, leading to user confusion during content playback.
Innovation Solution
An audio reproduction device that localizes secondary audio signals at arbitrary positions in a three-dimensional acoustic space, including azimuth and height directions, allowing parallel output with the main audio to enhance user differentiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple audio signals are reproduced simultaneously using conventional methods, then the user can access multiple audio sources, but the user cannot clearly distinguish between the audio sources leading to confusion
Solution Approach 1:
The patent applies spatial dimensionality by localizing audio signals in a three-dimensional acoustic space with azimuth and height directions. This transforms the conventional two-dimensional audio playback into a three-dimensional experience, allowing multiple audio signals to be clearly distinguished by their spatial positions while maintaining simultaneous reproduction capability
2Ease of operation
If audio signals are localized in three-dimensional acoustic space, then audio source distinction is improved, but the device complexity increases
Solution Approach 1:
The patent introduces an acoustic space as an intermediary virtual environment that mediates between multiple audio sources and the user. This virtual acoustic space handles the complex localization processing, separating the complexity from the physical device and presenting a simplified user experience through intuitive spatial audio positioning
Data Source
AI summary
An audio reproduction device (100) according to the present disclosure includes a reception unit (132) that receives, from a user, a request for reproducing a second audio signal that is an audio signal different from a first audio signal that is an original audio signal of content, and a reproduction unit (133) that localizes the second audio signal at an arbitrary position in an acoustic space including an azimuth direction and a height direction and outputs the first audio signal and the second audio signal in parallel when the reception unit receives the request.