Kim Sang-Myeong, Wang Semyung
Mechatronics, Kwang-Ju Institute of Science and Technology, 1 Oryong-dong, Puk-gu, Kwangju 500-712, Korea.
J Acoust Soc Am. 2003 Dec;114(6 Pt 1):3179-88. doi: 10.1121/1.1624070.
This paper considers authentic binaural reproduction with loudspeakers using cross-talk cancellation. A systematic time domain deconvolution method is presented using both stochastic and deterministic Wiener filters. This method has advantages in that the Wiener filter is inherently causal and stable so that no additional stabilization process, as generally required in the frequency domain methods, is needed. Errors involved in the authentic reproduction are classified into modeling, inverse, and repeatability errors. In addition, the reproduction error is used as the performance measure of a reproduction system. Finally, a series of monaural and binaural reproduction tests were conducted in an anechoic chamber using a PC based reproduction system with a soundcard by changing the length of the inverse filter used. Test results demonstrated that the performance was improved in proportion to the length of the filter used. The reproduction performance error and its test procedure presented here can be used for objectively assessing the performance of a subjective auditory perception test system.
本文考虑使用串扰消除技术通过扬声器进行真实双耳再现。提出了一种使用随机和确定性维纳滤波器的系统时域反卷积方法。该方法的优点在于维纳滤波器本质上是因果且稳定的，因此无需像频域方法通常所要求的那样进行额外的稳定化处理。真实再现中涉及的误差分为建模误差、逆误差和重复性误差。此外，再现误差被用作再现系统的性能指标。最后，在消声室中使用基于PC且带有声卡的再现系统，通过改变所使用的逆滤波器的长度，进行了一系列单声道和双耳再现测试。测试结果表明，性能随着所使用滤波器的长度成比例提高。这里给出的再现性能误差及其测试程序可用于客观评估主观听觉感知测试系统的性能。
