Acoustic signal processing method, computer program, and acoustic signal processing device

JPWO2024014389A5Pending Publication Date: 2025-03-25
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Patent Information

Application Number
JP2024533678
Authority / Receiving Office
JP · JP
Patent Type
Applications
Filing Date
2023-12-06
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

Conventional acoustic signal processing methods fail to provide a realistic sense of presence by not effectively simulating aerodynamic sounds generated when objects move in a virtual space, particularly when objects do not emit sound or move at speeds that do not produce noticeable wind noise.

Method used

An acoustic signal processing method that calculates the moving speed and distance of objects in a virtual space and generates aerodynamic sound signals based on these parameters, using band emphasis filters to simulate the shape of the listener's ears or head, and outputs these signals to create a more immersive experience.

Benefits of technology

This method enhances the realism of the audio experience by accurately simulating the aerodynamic sounds caused by moving objects, allowing listeners to perceive the movement of objects more realistically, even when they do not emit sound or move at low speeds.

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Abstract

This acoustic signal processing method includes: an acquisition step for acquiring first position information that indicates the position of an object, which is a mobile entity, in a virtual space and second position information that indicates the position of a listener in the virtual space; a first calculation step for calculating the movement speed of the object on the basis of the acquired first position information; a second calculation step for calculating the distance between the object and the listener on the basis of the acquired first position information and the acquired second position information; a generation step for generating an aerodynamic sound signal on the basis of the calculated movement speed and the calculated distance, the aerodynamic sound signal indicating an aerodynamic sound generated as wind produced due to movement of the object reaches the ears of the listener; and an output step for outputting the generated aerodynamic sound signal.
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