Diffuse-Field Equalisation of Binaural Ambisonic Rendering
Diffuse-Field Equalisation of Binaural Ambisonic Rendering
复制标题
双耳立体混响渲染的扩散场均衡
DOI：
10.3390/app8101956
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
G. Kearney
中科院分区：
文献类型：
--
作者：
Thomas McKenzie;D. Murphy;G. Kearney
由于虚拟现实的应用，立体声最近重新流行起来。低阶双声复制在高频率下本质上是不准确的，这会导致音色和高度定位不佳。扩散场均衡（DFE），消除方向无关频率响应的理论，被应用于双耳（耳机上）双声渲染，以解决高频再现。通过三种方式比较双耳双声渲染与直接卷积（通过头部相关脉冲响应（HRIRs））来评估双耳双声的DFE：频谱差异、预测矢状面定位和音色感知听力测试。结果表明，DFE成功地改善了大多数声源位置双耳双声渲染的频率再现，以及该技术的局限性，为该领域的进一步研究奠定了基础。
Ambisonics has enjoyed a recent resurgence in popularity due to virtual reality applications. Low order Ambisonic reproduction is inherently inaccurate at high frequencies, which causes poor timbre and height localisation. Diffuse-Field Equalisation (DFE), the theory of removing direction-independent frequency response, is applied to binaural (over headphones) Ambisonic rendering to address high-frequency reproduction. DFE of Ambisonics is evaluated by comparing binaural Ambisonic rendering to direct convolution via head-related impulse responses (HRIRs) in three ways: spectral difference, predicted sagittal plane localisation and perceptual listening tests on timbre. Results show DFE successfully improves frequency reproduction of binaural Ambisonic rendering for the majority of sound source locations, as well as the limitations of the technique, and set the basis for further research in the field.