Audio Signal Processing Device for Dynamic Sound Localization
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Solution Overview
Problem
Existing audio signal processing devices require listeners to adjust their posture to maintain sound localization, as the relative positional relationship between audio output devices and the listener affects the transfer characteristics, making it difficult for listeners with different builds or changing postures to achieve the desired sound localization effect.
Innovation Solution
An audio signal processing device that includes a processor to determine and adjust parameters based on predefined localization positions, allowing the listener to manually or automatically switch between predefined parameter sets to optimize sound localization, enabling adjustable sound output positions relative to audio output devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If parameters are calculated based on fixed transfer characteristics between audio output devices and listener, then sound localization effect is improved, but the system cannot adapt when listener posture changes or different listeners use the device
Solution Approach 1:
The patent implements multiple sets of parameters corresponding to different listener postures (e.g., sitting, standing) and different listener types (e.g., adult, child). The system dynamically switches between these parameter sets based on the actual usage scenario, allowing the sound localization to adapt to changing conditions while maintaining precision for each specific configuration.
Solution Approach 2:
The patent changes the parameters of the audio signal processing based on different listener configurations. By pre-calculating and storing multiple parameter sets with different transfer characteristics, the system can select and apply the appropriate parameters for the current listener posture and build type, thus maintaining accurate sound localization across various scenarios.
2Device complexity
If the system uses fixed parameter sets for sound processing, then the device complexity is reduced, but the ease of operation deteriorates as listeners must adjust their postures to match predefined positions
Solution Approach 1:
The patent enables the system to automatically adapt to different listeners without requiring manual adjustment of parameters. By providing multiple pre-configured parameter sets that cover common listener scenarios, the system allows any listener to achieve good sound localization simply by selecting their posture type, eliminating the need for complex manual calibration while maintaining ease of operation.
Data Source
AI summary
An audio signal processing device includes a memory; and a processor configured to execute receiving a command to determine one set of parameters from among parameters calculated according to positions at which a sound is localized, the positions being set relative to positions of audio output devices; and processing a sound to be output from the audio output devices, by using the one set of parameters determined based on the received command.