数字波导模拟40年发展，实现高效真实音效建模。
Four Decades of Digital Waveguides
- 用数字波导替代传统差分法，提升声波模拟效率。
- 支持实时乐器、人声与混响建模，计算成本更低。
- 结合机器学习优化参数，适合音频工程与音乐科技研究者。
数字波导物理建模相比计算物理中常用的通用有限差分方法，能更高效地模拟声波传播。这种高效性使得物理建模乐器、音效、人声模型及人工混响得以实现实时运算。本文综述了数字波导建模的历史演进与应用，并重点讨论了基于经典方法、进化算法和神经网络的参数优化技术，进行了对比分析。数字波导在保持物理准确性的同时显著降低计算开销，如今可通过现代机器学习与可微信号处理技术实现高效优化。
原文摘要 · Abstract (English)
Digital waveguide physical modeling offers efficient simulation of acoustic wave propagation as compared to general finite-difference schemes commonly used in computational physics. This efficiency has enabled the real-time implementation of physically modeled musical instruments and sound effects, as well as real-time vocal models and artificial reverberation. This paper provides an overview of the historical evolution and applications of digital waveguide modeling and highlights recent advances in the field. Parametric optimization using classical, evolutionary and neural approaches are also discussed and compared. Digital waveguides provide physically accurate simulations with reduced computational cost, and can now be optimized with modern machine learning and differentiable digital signal processing techniques.
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