Sound Field Synthesis Model for Real-Time Virtual Acoustics
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Solution Overview
Problem
Current methods for generating a virtual space sound field struggle to balance realism and real-time performance, with high-precision simulations requiring extensive calculations for high reality but resulting in low real-time performance, while simpler models achieve real-time performance at the cost of low realism.
Innovation Solution
A sound field synthesis model is pre-obtained through machine learning using high-precision calculation data, allowing for the generation of a virtual space sound field based on sound source information from a real space and virtual space information, combining the benefits of precision and real-time processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-precision simulation algorithm is used to generate virtual space sound field, then the degree of reality is improved, but the real-time performance deteriorates due to large amount of calculation required
Solution Approach 1:
The patent applies preliminary action by pre-training a neural network model using high-precision simulation data before actual application. The model is trained offline with comprehensive training data, then deployed for real-time inference. This separates the heavy computational workload of training from the real-time operation phase, enabling both high precision and real-time performance.
Solution Approach 2:
The patent creates a computational model that copies the essential characteristics of high-precision sound field simulations. Instead of performing complex physical simulations in real-time, the system uses a neural network that has learned the mapping relationships from input parameters to sound field characteristics, producing similar results much faster.
2Productivity
If ideal model is used to calculate sound field for real-time performance, then the real-time performance is improved, but the degree of reality deteriorates
Solution Approach 1:
The patent changes the fundamental parameters of the calculation model by replacing traditional physics-based simulation algorithms with a data-driven neural network model. The model takes input parameters (sound source information, virtual space information) and outputs sound field characteristics through learned transformations, achieving both speed and accuracy.
Solution Approach 2:
The patent substitutes traditional mechanical/computational simulation methods with a neural network-based system. Instead of performing explicit physical calculations involving wave propagation, reflection, and absorption, the system uses a trained neural network to directly compute sound field characteristics, dramatically reducing computational complexity while maintaining accuracy.
Data Source
AI summary
The present disclosure relates to an information processing apparatus, an information processing method, and a computer-readable storage medium. The information processing apparatus according to the present disclosure includes processing circuitry configured to: obtain a sound field in a virtual space, by using a sound field synthesis model, based on sound source information about a sound source in a real space and virtual space information indicating an object present in a virtual space. The sound field synthesis model is pre-obtained through machine learning by using a sound field in a virtual space obtained from high-precision calculation as learning data.


