摘要
本文利用环绕声重发的声像定位理论，对一种受到重视、很可能将被国际上广泛应用的通用环绕声系统—5通路3／2系统的声像特性进行了分析，并对系统进行了声像定位实验．理论和实验结果表明，按目前的信号馈给方式，系统可在倾听者前方产生稳定而明晰的声像；但在侧向和后方只能产生模糊和不稳定的声像（扬声器方向除外）；将别是在侧向，存在着一个声像的死区，并且对侧向和后方声像来说，听音区域片不宽阔，因而作为一种通用的系统，虽然将其用作伴随图像的重发时，可获得较好的效果；但用作不伴随图像的重发时，系统并不能很好地再观原声场的空间感。由于系统存在这种不容忽视的缺陷。
By using the image localization theory for surround sound reproduction, thispaper analyses the image character of an important surround sound system-5 channel3/2 system which will probably be widely used. An image localization experiment for thissystem is also carried out. Theoretical and experimental results show that, if the currentmethod of signal distribution to loudspeakers is used, the system is able to provide adistinct and stable front image, but it is only able to provide a vague and unstable sideor rear image (except in the direction of loudspeakers ). Especially, there is a 'blindrange' of image in the side direction. Moreover, for the side or rear image, the goodlistening area is narrow. Therefore, as a general surround system, when it is used as asound system with picture, it is able to present a satisfactory effect; but as a sound systemwithout picture, the system fails to reproduce the spaciousness of the original sound field.Because the system has such defect, it is emphasised that it should be improved.
出处
《应用声学》
CSCD
北大核心
1997年第5期1-7,共7页
Journal of Applied Acoustics
关键词
立体声
环绕声
声像定位
Stereophone, Surround sound, Sound image localization
