三维声双耳渲染算法的定位感知评价分析

Perception evaluation and analysis of location of 3D sound binaural rendering algorithms

随着三维声双耳渲染算法的应用越加广泛,建立有效且完备的双耳渲染算法评价体系成为了重要课题。本文基于之前的研究结果,优化了定位感知的评价方法,提取更细化的声学客观特征,并通过偏最小二乘回归方法建立主客观感知模型,探讨对双耳渲染的定位感知机理。实验结果表明,双耳渲染算法对定位感知有显著的优化作用,尤其适用于影视类信号。1kHz以下的中低频双耳特征和双耳间信号频谱能量分布特征是影响定位主观感知的重要特征。

With the increasing application of 3D sound binaural rendering algorithms,establishing an effective and comprehensive evaluation system for binaural rendering algorithms has become an important issue.Based on previous research results,this paper optimized the evaluation method of location perception,refined acoustic objective features extraction,and established a subjective-objective perception model through the partial least squares regression method to explore the location perception mechanism of binaural rendering.The results show that binaural rendering algorithms have a significant optimization effect on localization perception,especially for film and television signals.The binaural features at low and medium frequency below 1 kHz and the energy distribution of interaural signal spectrum are important features affecting subjective perception of localization.