3D Sound Reproduction Using Frequency Spectrum Adjustment
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Solution Overview
Problem
Conventional three-dimensional sound models in virtual reality systems fail to provide an adequate sense of direction, requiring excessive computational resources to achieve a realistic experience.
Innovation Solution
A sound reproducing method that generates a three-dimensional sound signal by determining the sound source position relative to a listener within a virtual environment and applying an adjusting function to enhance the frequency spectrum's peaks and valleys, maintaining the sound signal's behavior when the sound source is within a target region, without excessive computational resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a model close to the real environment is used for three-dimensional sound, then the sense of direction is enhanced, but a large amount of computation resource is required
Solution Approach 1:
The virtual environment is divided into multiple target regions, and different adjusting functions are applied to different regions. This segmentation allows the system to enhance sound directionality only in specific areas rather than uniformly across the entire environment, reducing overall computational resource consumption while maintaining enhanced sense of direction where needed.
Solution Approach 2:
Different adjusting functions are applied to different target regions based on their specific characteristics. The adjusting function modifies the frequency spectrum locally within each target region to enhance peaks and valleys, providing enhanced sound directionality only in regions where it is most beneficial rather than uniformly across all spaces.
2Use of energy by moving object
If conventional three dimensional sound models are used, then computation resource is reduced, but the sense of direction is insufficient
Solution Approach 1:
An adjusting function is introduced as an intermediary between the conventional sound model and the final output. This adjusting function processes the sound signal within target regions to enhance the sense of direction by modifying the frequency spectrum, bridging the gap between simple models and realistic sound reproduction without requiring full computational resources of highly complex models.
Solution Approach 2:
The adjusting function changes parameters of the sound signal, specifically enhancing peaks and valleys of the frequency spectrum within target regions. By selectively modifying these parameters only in regions where sound sources are present, the system achieves enhanced sense of direction with minimal computational overhead compared to conventional models.
Data Source
AI summary
A sound reproducing method used in sound reproducing apparatus that includes the steps outlined below is provided. A sound signal with a three-dimensional (3D) sound generating process is generated according to listener data and sound data. Whether a sound source position is within a target region relative to a listener position within a virtual environment is determined according to the listener data and the sound data. The sound signal is multiplied by an adjusting function to enhance peaks and valleys of the sound signal while maintaining a behavior of the sound signal when the sound source position is within the target region. The sound signal is reproduced.