Evaluation of equalization methods for binaural signals
Evaluation of equalization methods for binaural signals
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DOI：
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发表时间：
2009-05
影响因子：
1.4
通讯作者：
Zora Schärer;A. Lindau
中科院分区：
文献类型：
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作者：
Zora Schärer;A. Lindau
对于声学环境的双耳模拟的质量，最苛刻的测试标准是它们是否可以在感知上与真实的声场区分开。如果仿真提供了自然的交互和足够的空间分辨率，则主要在由于记录和再现系统（仿真头戴式麦克风、耳机）的传递函数的非完美均衡而导致的频谱失真方面感知差异。为了评估不同的补偿方法，几个耳机传递函数进行了测量的假人头。基于这些测量结果，使用听觉测量频谱差异来评估从文献中重新实现的不同逆滤波技术的性能。此外，使用两种不同的耳机和两种不同的音频刺激（粉红噪声，声学吉他）进行ABC/HR听力测试。在听音测试中，将真实的扬声器直接与具有高空间分辨率的双耳模拟进行比较，该双耳模拟使用七种不同的均衡方法进行补偿。
The most demanding test criterion for the quality of binaural simulations of acoustical environments is whether they can be perceptually distinguished from a real sound field or not. If the simulation provides a natural interaction and sufficient spatial resolution, differences are predominantly perceived in terms of spectral distortions due to a nonperfect equalization of the transfer functions of the recording and reproduction systems (dummy head microphones, headphones). In order to evaluate different compensation methods, several headphone transfer functions were measured on a dummy head. Based upon these measurements, the performance of different inverse filtering techniques re-implemented from literature was evaluated using auditory measures for spectral differences. Additionally, an ABC/HR listening test was conducted, using two different headphones and two different audio stimuli (pink noise, acoustical guitar). In the listening test, a real loudspeaker was directly compared to a binaural simulation with high spatial resolution, which was compensated using seven different equalization methods.