Sound Field Support Apparatus for Accurate Audio Localization
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Solution Overview
Problem
Conventional sound simulation technologies fail to allow direct comparison between a virtual sound source and its simulated reproduction, making it difficult for audiences to assess the accuracy of sound simulation and adjust settings accordingly.
Innovation Solution
A sound field support method and apparatus that generate and compare sound signals based on position and localization information, allowing audiences to adjust sound image localization and reproduce sounds accurately by outputting both original and simulated audio signals for binaural processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a virtual sound source is used to simulate sound in a target space, then sound simulation capability is improved, but the ability to compare and adjust the simulated sound against the original sound source is lost
Solution Approach 1:
The system segments the audio output into two distinct paths: one path processes the original audio signal through the virtual sound source simulation, while the other path processes a reference audio signal. This segmentation allows both the simulated sound and reference sound to be independently processed and then compared, resolving the contradiction between simulation capability and comparison capability.
Solution Approach 2:
The system introduces an intermediary comparison mechanism that takes both the simulated reproduction sound from the virtual sound source and the reference sound, processes them through binaural rendering, and presents them in a comparable format. This intermediary process enables the audience to hear both sounds and make adjustments, thereby recovering the lost comparison capability while maintaining simulation functionality.
2Productivity
If sound processing is executed using only virtual speakers in a virtual space, then simulation efficiency is improved, but the accuracy of sound image localization adjustment is reduced
Solution Approach 1:
The system implements a feedback loop where the audience can hear both the simulated sound and reference sound simultaneously, compare them, and provide adjustment input. This feedback mechanism allows for iterative refinement of the sound image localization settings, thereby improving accuracy while maintaining the efficiency of virtual sound source processing.
Solution Approach 2:
The system performs preliminary binaural rendering of both the simulated reproduction sound and reference sound before presentation to the audience. This preliminary processing prepares both signals in an optimized format for comparison, ensuring that when the audience makes adjustments, the sound image localization can be accurately refined without requiring extensive post-processing.
Data Source
AI summary
A sound field support method for an audio reproducing apparatus for simulating sound emitting from a sound source, the method includes selecting either position information on the sound source to be set in a virtual space or localization information of the sound source, in a case where sound from the sound source is to be simulated sound emitted from a speaker to be set in a target space, generating a first sound signal based on the position information in a state where the selecting has selected the position information, generating a second sound signal based on the localization information in a state where the selecting has selected the localization information, and adjusting sound image localization of an input audio signal from the sound source to be output to the speaker using the first sound signal and the second sound signal.